Bibliographies thématiques / Agro-climatic

Littérature scientifique sur le sujet « Agro-climatic »

Auteur : Grafiati
Publié le 18 mai 2024

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Articles de revues sur le sujet "Agro-climatic"

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Bhuarya, Hemant Kumar, A. S. R. A. S. Sastri, S. K. Chandrawanshi, Pandhurang Bobade et Deepak K. Kaushik. « Agro-Climatic Characterization for Agro-Climatic Zone of Chhattisgarh ». International Journal of Current Microbiology and Applied Sciences 7, no 08 (10 août 2018) : 108–17. http://dx.doi.org/10.20546/ijcmas.2018.708.013.

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Jedlička, Karel, Jiří Valeš, Pavel Hájek, Michal Kepka et Martin Pitoňák. « Calculation of Agro-Climatic Factors from Global Climatic Data ». Applied Sciences 11, no 3 (29 janvier 2021) : 1245. http://dx.doi.org/10.3390/app11031245.

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This manuscript aims to create large-scale calculations of agro-climatic factors from global climatic data with high granularity-climatic ERA5-Land dataset from the Copernicus Climate Change Service in particular. First, we analyze existing approaches used for agro-climatic factor calculation and formulate a frame for our calculations. Then we describe the design of our methods for calculation and visualization of certain agro-climatic factors. We then run two case studies. Firstly, the case study of Kojčice validates the uncertainty of input data by in-situ sensors. Then, the case study of the Pilsen region presents certain agro-climatic factors calculated for a representative point of the area and visualizes their time-variability in graphs. Maps represent a spatial distribution of the chosen factors for the Pilsen region. The calculated agro-climatic factors are frost dates, frost-free periods, growing degree units, heat stress units, number of growing days, number of optimal growing days, dates of fall nitrogen application, precipitation, evapotranspiration, and runoff sums together as water balance and solar radiation. The algorithms are usable anywhere in the world, especially in temperate and subtropical zones.
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CHOWDHURY, A., H. P. DAS et S. S. SINGH. « Agro-climatic classification in India ». MAUSAM 44, no 1 (31 décembre 2021) : 53–60. http://dx.doi.org/10.54302/mausam.v44i1.3775.

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In the present study, principal component analysis has been applied to agroclimatic variables for delineating India into homogeneous agroclimatic zones for kharif crops. The vaTiates chosen were soil moisture, water need of the crops, number of rainy days and radiation. Spatial variability of some of these factors has been discussed. Vector 1 and vector 2 were obtained for each of the three separate sets of the variates and plotted to obtain grid maps. Through a process of successive superimposition of these maps, agro-climatic zones have been obtained.
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ISAEV, A. S. « Assessment of agro climatic resources of the Sana’a basin ». Prirodoobustrojstvo, no 1 (2022) : 20–27. http://dx.doi.org/10.26897/1997-6011-2022-1-20-27.

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The aim of the investigation is to study the agro-climatic resources of the Sana’a basin to substantiate the productivity of agricultural crops under the conditions of dry farming taking into consideration the established level of agricultural production, especially agro technical, water, chemical, reclamation anti-erosion measures. There is given a concept of agro climatic resources of the territory. The classifi cation of agricultural plants developed on the basis of climatic and ecological principles and based on agro-climatic indicators which characterize the need of plants in heat, illumination and moisture is presented. An assessment of the thermal and light resources of the Sana’a basin was carried out for natural-agricultural mountainous regions with relatively homogeneous mesoclimatic conditions.
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Tolmachova, A. V. « ASSESMENT THE GROWTH DYNAMICS OF SOYBEAN YIELD AGRO-ENVIRONMENTAL CATEGORIES ». Odesa National University Herald. Geography and Geology 19, no 4(23) (20 mars 2015) : 87–97. http://dx.doi.org/10.18524/2303-9914.2014.4(23).39315.

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In this paper a model of assessment the growth dynamics of soybean yield agro-ecological categories was proposed and a generalized characteristic of agro-climatic conditions of soya cultivation productivity in the forest-steppe zone of the Ukraine was performed. Purpose. Soybean is the most common, legume and oilseed crop of our planet. This thermopiles leguminous plant is the short-day plant of the monsoon climate. Subject of the study. Regularities of the agro-climatic conditions influence on the formation of agro-ecological levels of soybean yield. Purpose of the work is to develop a model and assess the impact of agro-climatic conditions on the soybean yield formation and modeling this influence. Methodology. The theoretical basis of the study was to use the basic model of the assessment of agro-climatic resources of crops productivity formation by A.N. Polevoy, based on H.G.Tooming concept about the maximum crop productivity. The model is based on the concepts of four levels of agro-ecological yield categories: potential yield (PY), meteorologically possible yield (MPY), actually possible yield (APY) and yield in the production (YP). Also we will consider the generalized characteristics of cultivation agro-climatic conditions: degree of favoring meteorological conditions of crop cultivation and efficiency of agro-climatic resources use. On the basis of mean annual meteorological and agro-meteorological data, as well as using information on organic and mineral fertilizers application, the formation of different agro-ecological levels of soybean yields in the Ukraine was modeled. Finding. Calculated values allowed us to estimate the dynamics of PY, MPY, APY and YP growth and the course of decadal sums of PAR during the growing season, which were calculated for forest-steppe zone of the Ukraine. The maximum value of PY, MPY, APY, YP growth and PAR sums reached in the eighth decade and are 225.7 g/m2 ∙ dec., 208.9 g/m2 ∙ dec., 126.9 g/m2 ∙ dec., 43.4 g/m2 ∙ dec. and 11.8 kJ/ cm2 ∙ dec. respectively. By the end and PAR sums of the growing season the growths and PAR sums are reducing. Calculated values allowed us to estimate the dynamics of hydrothermal regime of soybeans. Evapotranspiration (E) and evaporation (E0) have a well-defined trend. With increasing air temperature and precipitation the evapotranspiration may increase or decrease. The ratio of evapotranspiration to evaporability (E/E0) characterizes moisture availability of crops and varies from 0.83 relative units to 0.6 relative units by the end of the growing season. On the basis of calculations made the assessment of generalized characteristics of agroclimatic conditions and productivity of soybean cultivation in the forest-steppe zone of the Ukraine. The highest values of grain MPY, grain APY, grain YP observed in forest-steppe areas, the lowest values are typical for areas of Southern Steppe. The highest degree of favoring the meteorological conditions (Km) for soybean cultivation observed in Polesye, the smallest value (Km) is in Southern Steppe. The assessment of the level of agro-climatic resources use efficiency (Kakl) for soybean cultivation showed that the highest value observed in the forest-steppe areas, the lowest value is in Northern Steppe. Conclusions. Thus, using the simulation we evaluated the impact of agro-climatic conditions on the dynamics of agro-ecological yield growth levels of soybean crop and estimated agro-ecological categories of grain yield, as well as estimated degree of favoring agro-climatic conditions for the soybean cultivation in the forest-steppe areas of the Ukraine.
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Kumratova, Alfira M., Vitaliy V. Aleshchenko et Natalia N. Zhuravleva. « Research of grain production productivity indicators and agro-climatic bonus for risk management tasks ». Economy of agricultural and processing enterprises, no 4 (2022) : 13–17. http://dx.doi.org/10.31442/0235-2494-2022-0-4-13-17.

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This article examines the dynamics of indicators of grain production productivity and climatic bonus in the context of three zones of the Tyumen region: taiga, southern and northern forest-steppe. The results of the analysis of the gross harvest of the main grain crops in the Tyumen region are presented, which characterize a volatile process characterized by sharp interannual differences. Indicators of agro-climatic bonus range within a year with a range of up to 44%. The unstable nature of the dynamics of weather conditions affecting the productivity of grain production is observed in a time series of agro-climatic bonuses related to the Tobolsk region (taiga), which has low grain yields. In the conditions of climate change, the percentage of values of agro-climatic bonus on the time horizon from one year to 35 years varies within 5.41...51,08%. The study of the dynamics of agro-climatic bonus during the period of active vegetation of grain crops (June-July) for the considered grain-producing territories of the Tyumen region is an urgent issue. The paper demonstrates the capabilities of the author’s tool, which allow an expert analyst to implement research and analysis in the form of “structured” information with the receipt of pre-forecast information and the construction of predictive models of the studied complex processes: the dynamics of indicators of agro-climatic bonus and productivity of grain production in the Tyumen region. The authors put forward a concept based on the comparison of the obtained cycles of the studied time series: the yield of grain crops in the Tyumen region and natural and climatic factors affecting them. The identified cycles of agro-climatic bonus and dynamic range of indicators of grain production productivity based on nonlinear dynamics methods can be used in both continuous and discrete analysis and forecasting.
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S. PASUPALAK, MANJARI, B. S. RATH et S.K. BISWASI. « Understanding and managing climatic variability in agriculture using agro-climatic characterisation ». Journal of Agrometeorology 21, no 3 (10 novembre 2021) : 376–78. http://dx.doi.org/10.54386/jam.v21i3.264.

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GO, Aminu, Ibe MN, Chikaire JU et Ajaero JO. « Climate change information needs of agro-pastoralists in Southeast Nigeria ». MOJ Ecology & ; Environmental Sciences 7, no 2 (22 avril 2022) : 48–51. http://dx.doi.org/10.15406/mojes.2022.07.00246.

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All categories of farmers need information to be productive. Such information is on climatic change. This research work seeks to examine climatic change information needs of agro-pastoralists in Southeast, Nigeria. The specific objectives were to ascertain agro- pastoralists ’awareness of climatic change, identity sources of information on climate change, examine areas climatic change information is needed, and to describe agro-pastoralists responses to climatic change information received. Questionnaire was used to elicit information from 120 agro pastoralists purposively selected from their various camps in 3 Southeast States of Nigeria (Imo, Abia and Enugu). Data collected were analyzed descriptively using percentages and presented in frequency tables. Results showed that all the agro pastoralists were aware of climate change as seen in their response such as occurrence of heavy, but erratic rainfall(95.5%), drought occurrence(81.68%), high temperature(64.2%), flooding(87.5%), water shortage(84.2%), crop failures(100%) among others. Sources of information on climatic change were personal experiences, (80%), fellow farmers(75.3%), Miyetti Allah(100%), Hausa radio program(100%) and many more. They need information on livestock diseases, pasture availability, safe places to go, livestock prices, passable/impassable roads, when to sell their animals. To cope, they sell their animals (90.8%), dig water holes/wells, take animals for vaccination, receive training on animal vaccination, buy veterinary drugs and many more.
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Tram, Nguyen Ngoc Bich, Nguyen Thuy Sieng et Dao Nguyen Khoi. « Mapping agro-climatic zone for coffee crop in the Srepok River Basin ». IOP Conference Series : Earth and Environmental Science 1170, no 1 (1 avril 2023) : 012003. http://dx.doi.org/10.1088/1755-1315/1170/1/012003.

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Abstract The objective of the present study was to map the agro-climatic zone for Robusta coffee crop in the Srepok River Basin. In this study, the trends of temperature and precipitation were identified using by the Mann – Kendall non-parametric test, the water deficit was calculated based on the CROPWAT model, and the agro-climatic zones for Robusta coffee crop were mapped using geographic information system (GIS). Results showed that the average annual temperature and the average annual rainfall had increasing trends. In addition, five agro-climatic zones were identified in the study area, including very appropriate, appropriate, neutral, restricted and inappropriate. Most of the territory was classified as Moderately Suitable for Robusta coffee. Suitable areas for the coffee cultivation were found in the east of the basin. Agro-climatic zoning will help managers and farmers improve crop yields effectively, avoid climate risks and maximize local advantages.
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Kumar, Anjani, Amrendra Kumar, Sudeepa Kumari Jha et Sumit Kumar Singh. « Appraisal of Cluster Front Line Demonstration on Rapeseed and Mustard in Biharand Jharkhand ». Indian Journal of Extension Education 58, no 1 (2022) : 31–35. http://dx.doi.org/10.48165/ijee.2022.58107.

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Performance of ten varieties of rapeseed and mustard were assessed through cluster frontline demonstration (CFLD) under different agro-climatic condition of Bihar and Jharkhandcontinuously for four years (2017-18 to 2020-21) by the KVKs of Bihar and Jharkhand.Among the agro-climatic zones of Bihar, highest yield was recorded in the demonstratedplot from zone III (B) i.e. South-West alluvial plain in case of variety RH 0749 (15.29 q/ha) and in Jharkhand state from zone I (Central and North astern plateau) with varietyNRCHB 101 (13.31 q/ha). Lowest technology index was observed for variety RajendraSufalam in all the zone (-4.96, 5.53, 7.18 and 22.92 % in zone I, III (B), III (A) & II) ofBihar and NRCHB 101 (23.15% in zone I) in Jharkhand. The range of extension gapwas1.38 to 4.37 and 1.13 to 4.86 q/ha under the agro-climatic zone of Bihar and Jharkhand,respectively. Pooled data shows that in Bihar, maximum net return (Rs. 46986 /ha) wasobtained in variety Rajendra Sufalam in agro-climatic zone III A of Bihar with benefit costratio 3.85:1 whereas under agro-climatic condition of Jharkhand maximum net return (Rs.39598 /ha) was recoded from variety NRCHB 101 with benefit cost ratio 2.80:1
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Thèses sur le sujet "Agro-climatic"

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Misra, Tarun Kumar. « Evaluation of antioxidant properties of tea under various agro-climatic conditions of North Bengal ». Thesis, University of North Bengal, 2017. http://ir.nbu.ac.in/handle/123456789/2686.

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Michael, Pippa J. « Agro-ecology of Malva parviflora (small-flowered mallow) in the Mediterranean-climatic agricultural region of Western Australia ». University of Western Australia. Faculty of Natural and Agricultural Sciences, 2006. http://theses.library.uwa.edu.au/adt-WU2006.0076.

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[Truncated abstract] Malva parviflora L. (small-flowered mallow) (Malvaceae) is a common weed of pastures and wastelands and its distribution has increased rapidly throughout Australia during the last decade. Control of M. parviflora with herbicides, such as glyphosate, is often unsatisfactory and changing farming practices, such as minimum tillage, have facilitated its spread. Yet there has been little research on M. parviflora in the past and many aspects of its biology and ecology are unknown. Hence, there exists a need to examine these aspects in order to investigate and develop suitable integrated weed management strategies. Weed identification is the first and probably the most important step in the management of weeds. Here it is shown that the weedy Malva species in Western Australian farming systems is M. parviflora, and not a morphologically similar Malva species or hybrid of two species. A common garden study of 24 populations collected across the agricultural region of south-west Western Australia revealed that since its introduction over 140 years ago M. parviflora has successfully adapted to a wide range of distinct environments. The species is able to thrive in areas that vary in annual rainfall from 315 to 496 mm, maximum average temperatures from 21.9 to 26.8oC and minimum average temperatures from 9 to 13.6oC. However, there was limited broad scale ecoclinal differentiation and low genetic variation within the common garden study with only length of time between sowing and flowering differing between populations. As the species was shown to possess a predominately inbreeding system, which typically would create ecotypes/ecoclines due to limited gene flow, it was suggested that seed dispersal by sheep is likely to have increased gene flow thus suppressing population differentiation. A considerable proportion of mature hardseeded M. parviflora can survive rumen digestion and mastication by sheep. ... With origins thought to be in the Mediterranean region, it is not surprising that M. parviflora has thrived and prospered in south-west Western Australia. This thesis has determined several aspects that have enabled it to flourish in this Mediterranean-type environment and most of these attributes, including autogamous reproduction, ecoclinal/ecotypic formation, dormancy and asynchronous germination and rapid seed development, are commonly found in successful weeds world-wide.
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Ghosal, Tusar Kanti. « Bio-ecology of pulse beetle, callosobruchus spp (coleoptera : Bruchidae) and potentiality of their safe management in storage at Terai agro-climatic conditions ». Thesis, University of North Bengal, 2003. http://hdl.handle.net/123456789/1008.

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Thorn, Jessica Paula Rose. « Ecosystem services, biodiversity and human wellbeing along climatic gradients in smallholder agro-ecosystems in the Terai Plains of Nepal and northern Ghana ». Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:3319dafc-5b0c-436a-b653-a623fc3e8de4.

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Increasingly unpredictable, extreme and erratic rainfall with higher temperatures threatens to undermine the adaptive capacity of food systems and ecological resilience of smallholder landscapes. Despite growing concern, land managers still lack quantitative techniques to collect empirical data about the potential impact of climatic variability and change. This thesis aims to assess how ecosystem services and function and how this links with biodiversity and human wellbeing in smallholder agro-ecosystems in a changing climate. To this end, rather than relying on scenarios or probabilistic modelling, space was used as a proxy for time to compare states in disparate climatic conditions. Furthermore, an integrated methodological framework to assess ecosystem services at the field and landscape level was developed and operationalised, the results of which can be modelled with measures of wellbeing. Various multidisciplinary analytical tools were utilised, including ecological and socio-economic surveys, biological assessments, participatory open enquiry, and documenting ethnobotanical knowledge. The study was located within monsoon rice farms in the Terai Plains of Nepal, and dry season vegetable farms in Northern Ghana. Sites were selected that are climatically and culturally diverse to enable comparative analysis, with application to broad areas of adaptive planning. The linkages that bring about biophysical and human changes are complex and operate through social, political, economic and demographic drivers, making attribution extremely challenging. Nevertheless, it was demonstrated that within hotter and drier conditions in Ghana long-tongued pollinators and granivores, important for decomposition processes and pollination services, are more abundant in farms. Results further indicated that in cooler and drier conditions in Nepal, the taxonomic diversity of indigenous and close relative plant species growing in and around farms, important for the provisioning of ecosystem services, decreases. All other things equal, in both Nepal and Ghana findings indicate that overall human wellbeing may be adversely effected in hotter conditions, with a potentially significantly lower yields, fewer months of the year in which food is available, higher exposure to natural hazards and crop loss, unemployment, and psychological anxiety. Yet, surveys indicate smallholders continue to maintain a fair diversity of species in and around farms, which may allow them to secure basic necessities from provisioning ecosystem services. Moreover, farmers may employ adaptive strategies such as pooling labour and food sharing more frequently, and may have greater access to communication, technology, and infrastructure. Novel methodological and empirical contributions of this research offer predictive insights that could inform innovations in climate-smart agricultural practice and planning.
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Salmon-Monviola, Jordy. « Modélisation agro-hydrologique spatialement distribuée pour évaluer les impacts des changements climatique et agricole sur la qualité de l'eau ». Thesis, Rennes, Agrocampus Ouest, 2017. http://www.theses.fr/2017NSARD081/document.

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L'objectif général de cette thèse est axé sur l’amélioration de modèles agro-hydrologique spatialement distribués pour l’analyse d'agro-hydrosystèmes, sous contrainte de changements climatiques et anthropiques. Cette thèse est structurée autour de trois questions de recherche liées à : i) la représentation de la dynamique spatio-temporelle des systèmes de cultures pour leur utilisation en entrée de modèles agro-hydrologiques distribués ; ii) la représentation du niveau exploitation agricole et des décisions des agriculteurs dans les modèles agro-hydrologiques distribués ; iii) la capacité de ces modèles à simuler des changements climatiques et anthropiquesDes éléments de réponse à ces questions sont apportés par des approches de modélisation réalisées dans différents contextes et à différentes échelles d’espace et de temps. Ces différentes approches sont discutées en les comparant notamment avec d’autres travaux réalisés. Ces différentes études soulèvent la nécessité de développer des méthodologies permettant i) d’une part l’acquisition de données et leur intégration dans les modèles agro-hydrologiques distribués ii) et d’autre part l’amélioration de l’exploitation des simulations, notamment pour les transformer en informations pertinentes et accessibles pour les parties prenantes au niveau d’un territoire. Des perspectives, portant à la fois sur la prise en compte des incertitudes des simulations des modèles agro-hydrologiques et l’analyse de la robustesse de ces modèles, sont également considérées
The general objective of this thesis is to improve spatially distributed agro-hydrological models for agro-hydrosystems analysis, under climatic and anthropogenic changes, in order to contribute to the identification of levers of action to mitigate effects of non-point source agricultural pollution. This thesis is structured around three research questions related to: i) the representation of spatio-temporal dynamics of cropping systems for their use as input in distributed agro-hydrological models; ii) the representation of farm level and decisions of farmers in distributed agro-hydrological models; and iii) the ability of these models to simulate climate and anthropogenic changes.Elements of response to these questions are provided by modeling approaches carried out in different contexts and at different scales of space and time. These approaches are discussed by comparing them with other works carried out. These different studies raise the need to develop methodologies allowing (i) the acquisition of data and their integration in distributed agro-hydrological models (ii) and, the improvement of the use of simulations results, in particular to transform them into relevant and accessible information for stakeholders at territorial level. Perspectives, covering both uncertainties of the simulations of the agro-hydrological models and the analysis of the robustness of these models, are also considered
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Luu, Ngoc Quyen. « Introduction d’une culture de printemps dans les systèmes de culture des « terres irrigables » des montagnes du Nord du Vietnam : approche par modèle agroclimatique ». Thesis, Montpellier, SupAgro, 2012. http://www.theses.fr/2012NSAM0019/document.

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L'objectif est d'évaluer sur le plan agro-climatique les options de réalisation d'une culture de printemps dans les hautes vallées du Nord du Vietnam. A partir d'hypothèses sur les contraintes agro-climatiques s'exerçant sur ces options, un modèle de simulation et le dispositif expérimental permettant de le caler et de l'évaluer ont été élaborés. Une expérimentation virtuelle replaçant les cultures de printemps envisagées (riz, riz « aérobie », maïs et soja) dans le climat de trois régions contrastées sur ce plan a ensuite été réalisée, le long d'un gradient d'altitude, et sous différentes modalités techniques, notamment de dates de semis. Cette démarche a été appliquée successivement aux deux grands cas de figure rencontrés dans les montagnes : irrigation des parcelles dès le printemps, et conduite en régime pluvial (irrigation praticable seulement pour le cycle estival). Elle a conduit à identifier, pour chacun de ces cas de figure et chacune des régions et cultures étudiées des fenêtres de semis favorables, intervalles de dates de semis pour lesquelles la culture de printemps présente peu de risques. La taille de cette fenêtre constitue ainsi un indicateur synthétique de la contrainte climatique pour une culture donnée dans un lieu donné : plus cette fenêtre est étroite, plus on peut s'attendre à ce qu'il soit délicat pour les producteurs de pratiquer la culture. Les résultats confirment clairement que même lorsque l'eau d'irrigation est abondante, le climat des montagnes du Vietnam ne permet pas partout de pratiquer une culture de printemps. Les risques identifiés sont la destruction par le froid pendant les stades précoces de la croissance végétative, l'allongement du cycle au-delà de la date où le riz irrigué d'été doit être installé selon la pratique actuelle, l'obtention de rendements nettement abaissés du fait de la faiblesse du rayonnement global et des températures pendant la première partie de la saison. Pour ce contexte irrigué, la culture qui échappe le mieux à ces contraintes dans les simulations est le soja, suivie du maïs et du riz conduit en semis en plein champ. Le riz semé en pépinière et repiqué est apparu comme le plus sensible aux contraintes de températures.En conditions pluviales, la culture de printemps est nettement plus délicate tout particulièrement à cause des retards de levée et des stress hydriques pendant la phase de croissance végétative liés aux faibles précipitations de début de saison. Le soja reste la culture pour laquelle la contrainte de durée de cycle est la plus faible, mais son rendement simulé est fortement réduit par les stress hydriques. Le riz « aérobie » et le maïs sont des options envisageables en conditions strictement pluviales aux altitudes relativement modestes dans tous les climats étudiés. La géographie de l'extension des cultures de printemps au Vietnam est ainsi esquissée. Des perspectives de recherche sont proposées en vue d'accroître cette aire d'extension. Outre ces acquis importants pour l'agriculture locale, cette thèse confirme l'intérêt et l'efficacité d'une approche de modélisation ad hoc pour ce type de question agro-climatique
The goal of this thesis was to assess the agro-climatic feasibility of introducing a supplementary crop during the spring season in the high valleys of the mountainous northern Vietnam. From hypotheses drawn about the way climate constrained such crops, a simulation model and the experimental device required for calibrating and evaluating it were elaborated. A virtual experiment was carried out in order to submit the candidate crops (rice, “aerobic rice”, maize and soybean) under the contrasted climates of three regions, along the elevation gradient and under several technical management, especially sowing dates. This approach was applied consecutively to the two major cases occurring in these mountains: crop irrigated during the whole spring, and rainfed crop (land irrigable during summer only). This approach led to identify, for each of these two cases and for each of the studied regions and crops, favourable sowing windows, i.e. intervals of sowing dates for which the risks associated to spring crop are low. The size of such windows provides a synthetic indicator of the climatic constraint for a given crop at a given place: the narrower the window, the more difficult it is expected to be for farmers to practice the option.Results clearly confirmed that even if irrigation water is abundant, the climate of the mountains in Vietnam does not allow practicing the spring crop everywhere. The risks that were identified were crop destruction by lethally cold temperature during early vegetative stages, maturity delayed beyond the date at which the irrigated rice of summer must have been sown according to current practice, and obtaining yield neatly decreased due to low global radiation and temperature during the first half of the season. Under irrigated conditions, the simulated crop that best escaped these constraints was soybean, followed by maize and direct seeded rice. Rice sown in nurseries and transplanted showed more sensitive to temperature constraints.Spring crop showed strongly trickier under rainfed conditions, especially due to delays in seedlings emergence and water stresses during vegetative growth, in relation with low rainfall during the early part of the season. Soybean remained the crop with the shortest duration, but its simulated yield was strongly reduced by water stresses. “Aerobic rice” and maize were possible options under fully rainfed regime at relatively low elevations only, under any of the regional climates studied. Thus, the feasibility area of spring crops was thus sketched. Research perspectives were proposed, aiming at increasing this area. Additionally to these results, targeted at serving local agriculture, this work confirmed the value and effectiveness of an ad hoc modelling approach for agro-climatic studies of this kind
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Khan, Abdul Rehman. « Short term response of European wheat populations to contrasted agro-climatic conditions : a genetic analysis and first step towards development of epigenetic markers in earliness gene VRN-A1 ». Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00980832.

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Biodiversity provides the raw material for evolution and adaptation of populations and species. In agricultural biodiversity, the within-population genetic diversity is of major importance. On one hand, it can provide a buffering effect against the year-to-year variation of climate or biotic pressures and on the other hand diversity serves as a resource for the population to respond to selective pressures due to specific local conditions, thus allowing for local adaptation, particularly in the case where a population is introduced into a new location. Due to its wide geographic distribution indicating a high adaptiveotential and its socio-economic importance, wheat was chosen as model crop in this study. Flowering time is a major adaptive trait which has allows wheat to grow over a wide range of ecological and climatic conditions. This PhD study was designed to gain insights about the influence of within population diversity on the short term response of populations to contrasting agro-climatic conditions by studying the genetic, epigenetic and phenotypic variation. But due to the lack of prior existence of epigenetic markers, this thesis study is divided of two parts: In the first part, European wheat populations coming from a set of seven farmer and one modern varieties, each of which was grown on seven farms (distributed across Europe) for three years, were used to study their short term response to contrasting agro-climatic conditions in Europe by analysing their phenotypic and genotypic variations. For the second part the effect of vernalization on the DNA methylation profile of theVRN-A1 gene in winter wheat was studied as a first step towards the development for the epigenetic marker in this gene.The results from the first part of the study revealed that conservation history of these farmer varieties strongly influenced the genetic diversity and fine genetic structure. Ex situ conserved farmer varieties showed low genetic diversity and simpler structure whereas in situ conserved farmer varieties and mixtures revealed higher level of genetic diversity and complex genetic structure. Genetic and phenotypic spatio-temporal differentiation depending upon the level of diversity and structural complexity of the farmer variety was observed. The traditional varieties tend to become more differentiated than the modern variety arguing in favour of use of these diverse traditional (farmer) varieties in organic and low input agriculture systems. Interestingly, a significant phenotypic differentiation for varieties with very low genetic diversity has also been observed in this study, which gives indication of a possible role of epigenetic variation in the process of evolution.From the second part of the study (effect of vernalization on the DNA methylation profile of the VRN-A1 gene), it was found that in addition to the detection of gene body methylation across the VRN-A1 gene, we identified a region within intron 1 that shows significant increase in DNA methylation in response to vernalization treatment that is positively correlated with the gene expression. Although the role of this shift in gene regulation is still unclear due to time limitations in the thesis and the small number of genotypes analysed, this study will provide a good material towards future identification of new epialleles and the development of epigenetic markers to study the epigenetic variability of these populations.This study at large provides useful knowledge on the understanding of farmers' varieties evolutionary response to be used in the development of different breeding and conservation approaches for organic agriculture, taking into consideration of the importance of within population diversity, to satisfactorily address the problems of organic agriculture.
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Yohannes, Gebre Michael. « The use, maintenance and development of soil and water conservation measures by small-scale farming households in different agro-climatic zones of Northern Shewa and Southern Wello, Ethiopia / ». [S.l.] : [s.n.], 1999. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

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Ahmad, Tusawar Iftikhar. « The role of rural women in livestock management : socio-economic evidences from diverse geographical locations of Punjab (Pakistan) ». Phd thesis, Université Toulouse le Mirail - Toulouse II, 2013. http://tel.archives-ouvertes.fr/tel-00933784.

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In rural Punjab of Pakistan, women from small farm families have a huge role to play in realizing the potential that the country has in livestock sector to flourish. The study presents the current socio-economic condition of women livestock raisers, the extent and nature of their participation in livestock management activities, the impact of women's participation on their families' welfare, and the factors affecting their participation in livestock management activities. The type and size of the family, respondent's age, distant location of the village from the city, and the overall developmental status of the district had their impact on different aspects of rural women's status. At each of the three geographical levels, women respondent's participation level in livestock management activities was multiple of that of their husbands' level. Cultural norms, gendered division of labor, availability of family labor, and the physical condition of the participant were found more operative in determining the nature and level of participation of the family labor in livestock management activities. Participation of the family labor, various aspects of women's status, livestock related factors, and economic factors were the main causes identified as the factors affecting women's participation in livestock management activities. Improving women's role in livestock management and production is essential in improving overall family's health, education, income, and food security. The results signify the need for geographical targeting and the importance of using a gendered approach in the agricultural development programs.
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Bopape-Mabapa, Moshidi Paulina. « Yield characteristics, carbon capture and chemical composition of moringa oleifera under diverse planting population and agro-ecological conditions of the Limpopo Province ». Thesis, University of Limpopo, 2019. http://hdl.handle.net/10386/2860.

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Thesis (Ph. D. Agric. (Plant Production)) --University of Limpopo, 2019
Moringa oleifera is a multipurpose fast growing tree which is widely cultivated in tropical and subtropical regions of the world due to its numerous benefits. The benefits include medicinal use, industrial use, soil fertility, water purification, climate change mitigation as well as of nutritional value for humans and livestock. Recently, many areas globally have been rendered vulnerable to climate change as well as food insecurity. Climate change increases irregularities of rainfall and temperature patterns in semi-arid conditions. One practical way to address this challenge in the agricultural sector is to introduce more trees crop species which are found to be more tolerant than annual crops under harsh growing conditions. Moringa is one species that could be considered under variable climatic conditions for positive outcomes through climate change adaptation and mitigation as well as life sustenance against food insecurity threats. Production of moringa in South Africa is exclusively for leaf processing and consumption. To date, there is no documented information available about seed and oil yield production of moringa mainly in the Limpopo Province of South Africa. The aim of the study was to generate knowledge on moringa growth, nutritional composition, seed and oil yield production as well as its response to drought through gaseous exchange parameters, as influenced by plant density under diverse agro-ecological locations in Limpopo Province. The study was conducted in the Limpopo Province, South Africa, from November 2013 to January 2016. The study area falls within the semi-region which is characterized by low and erratic rainfall which predominately falls in summer as well as extremely low or high temperatures. A survey was conducted from November 2013 to September 2014 in five districts of the Limpopo Province. Focus group discussion, questionnaires and field observations were used for data collection. A total of 150 moringa growers formed part of the focus group and a questionnaire was administered to only thirty-one farmers, who constitute the population of farmers producing moringa within an area of 0.25 ha or more. A second study was conducted at two experimental sites in the Limpopo Province of northern part of South Africa to evaluate for the first time, the effect of plant density and cutting interval on biomass production and chemical composition of moringa grown under two diverse climatic conditions. Four different planting densities (435 000, 300 000, 200 000 and 100 000 plants/ha) were arranged in a randomized complete block design and experimental samples were replicated four times. A third study was conducted over two years to achieve additional objectives which included evaluation of gaseous exchange, biomass, seed, and oil yield. Untreated seeds of Moringa oleifera were used for establishing the trial at densities of 5 000, 2 500, 1 667 and 1 250 plants ha-1, with eight replicates. The same study was used to achieve the objective on gaseous exchange in comparison with other two naturally growing tree species of mopane (Colophospermum mopane) and marula (Sclerocarya birrea) trees growing within the moringa trial vicinity. The study was further used to evaluate the effect of planting density on biomass, grain, oil yield production and nutritional composition of Moringa oleifera trees. The last part of the study was carried out in the five districts of the Limpopo Province to determine the influence of soil physical and chemical properties on the nutritional composition of moringa leaves. The farms that were identified during the survey were also used to achieve other objectives of the study. In order to determine soil and leaf nutritional composition, soil samples were collected and analyzed for physical and chemical properties. The harvested leaves were dried at room temperature and their nutritional compositions were determined using standard methods. Findings from the studies revealed the following: The survey indicated that there are potential moringa farmers in all the districts of the province, with the intention to commercialize the tree. Majority of farmers grow moringa on 0.251.0 ha and have been producing the crop for the past 2 years. The study on planting density and cutting frequency revealed satisfactory nutritional composition in the leaves across the cutting frequencies and that, an increase in the plant density led to enhanced biomass production. The study on the monthly and seasonal gaseous exchange revealed significant differences in net photosynthetic rate, transpiration, sub-stomatal CO2 and stomatal conductance. However, planting densities of Moringa oleifera had no significant effect on all the gaseous exchange parameters measured. In a comparison of moringa with other tree species growing in the vicinity of moringa, the results differed significantly in gaseous exchange. The highest activity in photosynthetic rate (A), stomatal conductance (gs), transpiration rate (E) and sub-stomatal CO2 (Ci), as well as higher stomatal density, was found in moringa. The findings from the biomass, seed yield and oil yield study showed that the increase in measured biomass, seed and oil yield increased with increasing planting density. However, seed oil concentration was non-significant. Findings from the ecology study revealed that moringa improved soil nutritional composition; mainly in areas where the trees were more than three years old as compared to control soils where moringa had not been planted. The soil nutritional composition differed with soil textural classes with the clay soils recording higher nutrient ion values. The study revealed that moringa can be produced in many locations of the Limpopo Province without negatively affecting leaf nutritional composition. Moringa leaves contain high level of nutrients even under marginal production areas irrespective of the planting density. A population of 5000 plants ha-1 can be used for seed and oil yield production where temperatures are favourable for improved farmers’ livelihoods. The results strongly showed with no doubt, the superiority of moringa in capturing more carbon among the three species. Moringa maintained good leaf yield even under drought condition, which is an indication of its potential to act as a good sink for carbon dioxide absorption. It can, therefore, be recommended for many parts of Limpopo Province for climate change mitigation and adaptation strategies and food security. KEY CONCEPTS: agro-ecology, biomass, climate change, commercialization, drought, food security, gas exchange, leaf chemical composition, location, Moringa oleifera, oil, seed, soil textural class, survey, trees, weather, yield
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Livres sur le sujet "Agro-climatic"

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N, Basu D., Guha G. S et Kashyap S. P, dir. Agro-climatic regional planning in India. New Delhi : Concept Pub. Co., 1996.

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India. Planning Commission. Agro-Climatic Regional Planning Unit., dir. Agro-climatic regional planning : District level. Ahmedabad : Agro-Climatic Regional Planning Unit, Planning Commission, 1993.

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Proyek Pengembangan Regional Maluku (Indonesia), dir. Agro-climatic zones of the Maluku Province. Ambon : Maluku Regional Planning and Development Project, 1988.

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Basu, D. N. An area allocation model for states by agro-climatic subregions. Ahmedabad : Agro-Climatic Regional Planning Unit, 1993.

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Pasi, Nidhi. Urban rainwater harvesting : Case studies from different agro-climatic regions. New Delhi : Centre for Science and Environment, 2014.

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India. Planning Commission. Agro-Climatic Regional Planning Unit., dir. Land use planning in context of agro-climatic sub-regions. Ahmedabad : Agro-Climatic Regional Planning Unit, Planning Commission, 1998.

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Singh, H. P., et M. S. Palaniswami. Horticulture in different agro-climatic conditions : Four decades of coordinated research. New Delhi : Westville Pub. House, 2010.

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India. Planning Commission. Agro-Climatic Regional Planning Unit., dir. Forestry in India : Which way now ? : agro-climatic regional profiles & issues. Ahmedabad : Agro-Climatic Regional Planning Unit, Planning Commission, 1991.

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India. Planning Commission. Agro-Climatic Regional Planning Unit., dir. Agro-climatic regional planning at state level : Profiles, issues, strategies & programmes. Ahmedabad : Agro-Climatic Regional Planning Unit, Planning Commission, 1991.

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Adeoye, 'Tunde. Economic policy shift, agro-climatic condition, and inflation in Nigeria, 1970-1999. Ibadan : Nigerian Institute of Social and Economic Research, 2002.

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Chapitres de livres sur le sujet "Agro-climatic"

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Balasubramanian, T. N., R. Jagannathan et V. Geethalakshmi. « Agro-Climatic Analysis ». Dans Agro-Climatology Advances and Challenges, 51–60. London : CRC Press, 2022. http://dx.doi.org/10.1201/9781003261100-2.

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Anand, M. R., Poojitha Kommireddy, C. Seenappa, Murthy K. N. Kalyana et G. K. Ningaraju. « Agro-Climatic Zones of India ». Dans Agroecology, 49–62. London : CRC Press, 2023. http://dx.doi.org/10.1201/9781032627779-6.

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Ahmad, Latief, Raihana Habib Kanth, Sabah Parvaze et Syed Sheraz Mahdi. « Agro-climatic and Agro-ecological Zones of India ». Dans Experimental Agrometeorology : A Practical Manual, 99–118. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-69185-5_15.

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Khan, Sabir, Shilpi Yadav, Vineesha Singh et S. S. Khinchi. « Land Use Change and Agro-Climatic Interactions ». Dans Technological Approaches for Climate Smart Agriculture, 343–62. Cham : Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-52708-1_17.

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Edwin Prem Kumar, G., et M. Lydia. « Machine Learning Algorithms for Modelling Agro-climatic Indices : A Review ». Dans Smart Computing Techniques and Applications, 15–23. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1502-3_3.

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Aditya Shastry, K., H. A. Sanjay et M. C. Sajini. « Decision Tree Based Crop Yield Prediction Using Agro-climatic Parameters ». Dans Emerging Research in Computing, Information, Communication and Applications, 87–94. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1338-8_8.

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Roy, Trisha, Justin George Kalambukattu, Siddhartha S. Biswas et Suresh Kumar. « Agro-climatic Variability in Climate Change Scenario : Adaptive Approach and Sustainability ». Dans Springer Climate, 313–48. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-15501-7_12.

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Sivakumar, T., P. T. Suraj et P. C. Jayashree. « Trends in Climatic Change in the Last 50 Years at Seven Agro-climatic Regions of Tamil Nadu ». Dans Climate Change Modelling, Planning and Policy for Agriculture, 187–98. New Delhi : Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2157-9_19.

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Basu, Jyotish Prakash. « Measurement of Gender-Wise Vulnerability in Different Agro-Climatic Regions of West Bengal ». Dans Climate Change Vulnerability and Communities in Agro-climatic Regions of West Bengal, India, 133–41. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-50468-7_8.

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Vasantha Kumar, S. « Startegies for the Conservation of Livestock Breeds in Agro-climatic Zones of Tamil Nadu ». Dans Impact of Climate Change on Livestock Health and Production, 173–78. London : CRC Press, 2022. http://dx.doi.org/10.1201/9781003364689-18.

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Actes de conférences sur le sujet "Agro-climatic"

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Lebedeva, Maria. « AGRO-CLIMATIC RISKS AND AGRICULTURAL PRODUCTION : BELGOROD OBLAST ». Dans 18th International Multidisciplinary Scientific GeoConference SGEM2018. Stef92 Technology, 2018. http://dx.doi.org/10.5593/sgem2018/4.2/s19.035.

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Shuai, Zhang, Zhao Jinying et Li Linyi. « GIS Based Analysis of Agro-climatic Divisions Scenarios in China ». Dans 2009 International Forum on Information Technology and Applications (IFITA). IEEE, 2009. http://dx.doi.org/10.1109/ifita.2009.412.

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Bejan, Iurie. « Analiza modului de utilizare a terenurilor în Regiunea de Dezvoltare Nord a Republicii Moldova ». Dans Provocări şi tendinţe actuale în cercetarea componentelor naturale şi socio-economice ale ecosistemelor urbane şi rurale. Institute of Ecology and Geography, Republic of Moldova, 2020. http://dx.doi.org/10.53380/9789975891608.21.

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The land use has undergone some changes in the last 30 years, by reducing the areas with arable land, converting multi-annual plantations into other categories of land, etc. According to the current mode of land use, the Northern Development Region has a pronounced agricultural profile - 80.3% of the total area represents agricultural land. The spatial differentiations regarding the morphological and agro-climatic conditions allowed the identification within the region of areas with agro-forestry and agro-pastoral specializations.
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Asaulyak, I. F. « Vegetation conditions of winter wheat and their estimation using remote sensing methods on the territory of the Rostov region ». Dans Agrobiotechnology-2021. Publishing house RGAU-MSHA, 2021. http://dx.doi.org/10.26897/978-5-9675-1855-3-2021-113.

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« Agro-Climatic Risk Management for Better Agricultural Decision Making in Latin America ». Dans ASABE 1st Climate Change Symposium : Adaptation and Mitigation. American Society of Agricultural and Biological Engineers, 2015. http://dx.doi.org/10.13031/cc.20152122545.

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Aleshchenko, V. V., A. M. Kumratova et N. N. Zhuravleva. « AGRO-CLIMATIC POTENTIAL OF GRAIN PRODUCTION IN THE REGIONS OF ASIAN RUSSIA ». Dans Пространственный анализ социально-экономических систем : история и современность. Новосибирск : Сибирское отделение РАН, 2021. http://dx.doi.org/10.53954/9785604607893_453.

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Asaulyak, I. F. « Agrometeorological conditions and their estimation applicable to cultivation of winter wheat in Stavropol region ». Dans Растениеводство и луговодство. Тимирязевская сельскохозяйственная академия, 2020. http://dx.doi.org/10.26897/978-5-9675-1762-4-2020-107.

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To effectively use the potential of the territory, an agro-climatic study was carried out. The quantitative indicators of the influence of climate factors on the productivity of winter wheat in the Stavropol Territory have been established.
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Agajo, James, Jonathan G. Kolo, Godfrey Jonas, Abdulkareem Ridwan Opeyemi, Nosiri Onyebuchi Chikeze et Okeke Benjamin Chukwujekwu. « A modified web-based agro-climatic remote monitoring system via wireless sensor network ». Dans 2017 IEEE 3rd International Conference on Electro-Technology for National Development (NIGERCON). IEEE, 2017. http://dx.doi.org/10.1109/nigercon.2017.8281898.

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Ahmad, Aimi Athirah, Fadhilah Yusof, Muhamad Radzali Mispan et Hasliana Kamaruddin. « A copula-based modelling of agro-climatic pattern in relation to durian production ». Dans The 5TH ISM INTERNATIONAL STATISTICAL CONFERENCE 2021 (ISM-V) : Statistics in the Spotlight : Navigating the New Norm. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0113729.

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Rawat, Kishan Singh, Raj Kumar Pal, Sudhir Kumar Singh, Sanjeev Kumar et Ritiksha Danu. « Decadal changes in rainfall and temperature extreme in western agro-climatic zone of Punjab ». Dans INTERNATIONAL SCIENTIFIC AND PRACTICAL CONFERENCE “TECHNOLOGY IN AGRICULTURE, ENERGY AND ECOLOGY” (TAEE2022). AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0113343.

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Rapports d'organisations sur le sujet "Agro-climatic"

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Kadyampakeni, D. M., M. L. Mul, E. Obuobie, R. Appoh, A. Owusu, B. Ghansah, E. Boakye-Acheampong et J. Barron. Agro-climatic and hydrological characterization of selected watersheds in northern Ghana. International Water Management Institute (IWMI), 2017. http://dx.doi.org/10.5337/2017.209.

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Lee, Huey-Lin, Thomas Hertel, Brent Sohngen et Navin Ramankutty. Towards An Integrated Land Use Database for Assessing the Potential for Greenhouse Gas Mitigation. GTAP Technical Paper, décembre 2005. http://dx.doi.org/10.21642/gtap.tp25.

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This paper describes the GTAP Land Use Data Base designed to support integrated assessments of the potential for greenhouse gas mitigation. It disaggregates land use by agro-ecological zone (AEZ). To do so, it draws upon global land cover data bases, as well as state-of-the-art definition of AEZs from the FAO and IIASA. Agro-ecological zoning segments a parcel of land into smaller units according to agro-ecological characteristics, including: precipitation, temperature, soil type, terrain conditions, etc. Each zone has a similar combination of constraints and potential for land use. In the GTAP-AEZ Data Base, there are 18 AEZs, covering six different lengths of growing period spread over three different climatic zones. Land using activities include crop production, livestock raising, and forestry. In so doing, this extension of the standard GTAP Data Base permits a much more refined characterization of the potential for shifting land use amongst these different activities. When combined with information on greenhouse gas emissions, this data base permits economists interested in integrated assessment of climate change to better assess the role of land use change in greenhouse gases mitigation strategies.
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