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Dissertations / Theses on the topic 'Agroecosystem'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Belcher, Kenneth Ward. "Agroecosystem sustainability, an integrated modeling approach." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0023/NQ37872.pdf.

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2

Šarapatka, Bořivoj. "Phosphatase activities (ACP, ALP) in agroecosystem soils /." Uppsala : Dept. of Ecology and Crop Production Science, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/a396.pdf.

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3

Seman-Varner, Rachel Nicole. "The role of cover crops in agroecosystem functioning." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/83232.

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Current interest in cover cropping is focused on enhancing ecosystem services beyond soil conservation. Cover crop (CC) species function uniquely in their effects on ecosystem services when grown in monoculture or mixtures. This research integrated field experiments and a literature synthesis to evaluate the role of cover crops in improving nitrogen (N) management and simultaneously providing multiple ecosystem services. Legume CC fertilized with poultry litter (PL) could replace 101 to 117 kg N ha-1 of fertilizer in corn (Zea mays L.) production. Rye (Secale cereale L.) CC fertilized with PL

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4

Xu, Wei. "Agricultural land use change in relation to agroecosystem health." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq27473.pdf.

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5

Paisley-Jones, Claire E. "Monitoring Agroecosystem Biodiversity Using Bioacoustics and Remote Recording Units." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1316534540.

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6

Okey, Brian W. "Toward agroecosystem health, assessment of biodiversity in contrasting agricultural landscapes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ35808.pdf.

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7

MacLean, Richard Havelock. "The effect of alley cropping on an upland rice agroecosystem." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41035.

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If upland rice production is to be sustained on sloping land, soil erosion and fertility decline must be addressed. Where soil profiles are deep, hedgerows of Gliricidia sepium and Cassia spectabilis, planted on the contour, reduce soil erosion by promoting terrace formation and overcome fertility depletion by providing nutrient rich biomass. G. sepium and C. spectabilis established by seed survived better than by cuttings. Although increased hedgerow biomass was initially obtained when both species were intercropped, intense competition was observed in established hedgerows. Consequently, mix

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8

Romo, Cecilia Marie. "Climate-induced changes to multi-trophic interactions in an agroecosystem." Thesis, University of Canterbury. Biological Sciences, 2012. http://hdl.handle.net/10092/6937.

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Our earth is currently undergoing unprecedented human induced climate change, which is expected to drive widespread changes in species distributions and abundances that will affect natural pest suppression. Recent studies have suggested that climate change may cause changes to predator and herbivore assemblages in ways that alter multi-trophic food webs and affect the stability of ecosystems. Moreover, higher temperatures and increased climatic variability are expected to induce differential responses from predators and their prey that will undoubtedly disrupt species interactions. This thesis

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9

LANDINEZ, TORRES ANGELA YANETH. "Soil mycobiota in agroecosystem: influence of land use and management." Doctoral thesis, Università degli studi di Pavia, 2018. http://hdl.handle.net/11571/1214841.

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The present work investigated the biodiversity of soil fungi of agricultural areas differently managed by means of new generation sequencing technologies – NGS. The main object of this research was the analysis of the fungal biota in the Colombian soils, especially that of the upper Andean agro-environment. The study area was located in the region of Boyacá between 2800 and 3200 m asl. and characterized by different form of soil appropriation (apple and peach orchards, 10-year-old wood, and uncultivated grass field). Moreover, a case study has been analysed in Italy where metagenomic of soil m

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10

Kiem, Rita. "Characterization of refractory soil organic matter in long-term agroecosystem experiments." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=967132630.

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11

Mendiola, J. L. Reta. "An integrated agroecosystem analysis model for tropical wetlands in Veracruz Mexico." Thesis, University of Stirling, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311705.

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12

Di, Falco Salvatore. "Crop genetic diversity, agroecosystem production and the stability of farm income." Thesis, University of York, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434056.

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13

Porro, A. "AGRONOMIC INNOVATION FOR EMPOWERING AGROBIODIVERSITY AT DIFFERENT SCALES. RICE AGROECOSYSTEM ECOLOGY." Doctoral thesis, Università degli Studi di Milano, 2013. http://hdl.handle.net/2434/215683.

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The term “agrobiodiversity” emerged in the past decade, in an interdisciplinary framework that includes different disciplines (botany, ecology, agronomy, genetics, conservation biology…). It echoes the dynamic and complex relations among mankind, agriculture, cattle breeding, and their interactions in ecosystems. Agrobiodiversity is directly associated with food security, health, social equity, hunger alleviation, environmental sustainability, and rural sustainable development. These last ten years have seen an amplified consciousness both in Europe and in Italy of rural development topics. W

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14

Gardner, Megan Bates. "Cover Crop Root Contributions to Soil Quality in an Organiz Maine Agroecosystem." Fogler Library, University of Maine, 2005. http://www.library.umaine.edu/theses/pdf/GardnerMB2005.pdf.

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15

Balnytė, Skirmantė. "Agroecosystem Optimization by Crop Rotation, Catch Crop and Manure in Organic Farming." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20110902_143932-39161.

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To analyse the influence of crop rotations with a different ratio of nitrogen-fixing crops, catch crops and fertilisation with organic fertilisers on the following: 1. Soil enzyme activity; 2. Agrochemical properties of the soil and nitrogen balance; 3. Weed response; 4. Weed seed bank in the soil; 5. Crop yield and productivity.<br>Agroekosistemų optimizavimo augalų kaita, tarpiniais pasėliais ir organinėmis trąšomis ekologinėje žemdirbystėje tyrimai vykdyti 2004–2009 m., Lietuvos žemės ūkio universiteto Bandymų stotyje, sertifikuotame ekologinės žemdirbystės lauke, karbonatingame sekliai glė

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16

Ferry, Joshua David. "Phosphorus Management in the Agroecosystem: An analysis of knowledge and perceived risk." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1300980591.

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17

Feltner, Penny. "Local food culture and its effects on agroecosystem health: a case study." Miami University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=miami1400852016.

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18

Stinner, Jedediah Hall. "Effects of Agroecosystem Management on water quality in multiple watersheds in Ohio." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1462808218.

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19

Gacengo, Catherine N. Wood C. W. Shaw Joey N. "Agroecosystem management effects on carbon and nitrogen cycling across a coastal plain catena." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SUMMER/Agronomy_and_Soils/Dissertation/Gacengo_Catherine_2.pdf.

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20

Biswas, Sutapa. "Alfalfa trap cropping increases abundance of key arachnids in an organic strawberry agroecosystem." Thesis, San Jose State University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1592860.

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<p> Alfalfa Trap Cropping Increases Abundance Of Key Arachnids In An Organic Strawberry Agroecosystem Eighty three percent of the strawberries consumed in North America are grown in California, where the widespread use of insecticides has become hazardous to public health. The intensive use of pesticides for growing strawberries causes serious health risks to farm workers, in addition to contaminating the soil and groundwater. The cost to the environment and public health in the United States is estimated at $12 billion annually. Finding effective nontoxic management strategies for insect pest

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21

Patron, Sarti R. "Modelling the soyabean agroecosystem in tropical Mexico : Production as affected by water supply." Thesis, University of Reading, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378156.

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22

Charron, Dominique F. "Livestock production and stream health in the Great Lakes Basin, an agroecosystem health approach." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq61971.pdf.

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23

Moe, Swe Yee. "ミャンマー、ドライゾーンにおける作付体系動態の解析". Kyoto University, 2015. http://hdl.handle.net/2433/199536.

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24

Moe, Swe Yee. "Analysis of Dynamics of Cropping Systems in the Dry Zone, Myanmar." Kyoto University, 2015. http://hdl.handle.net/2433/199368.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第19044号<br>農博第2122号<br>新制||農||1032(附属図書館)<br>学位論文||H27||N4926(農学部図書室)<br>31995<br>京都大学大学院農学研究科地域環境科学専攻<br>(主査)教授縄田栄治, 教授舟川晋也, 教授白岩立彦<br>学位規則第4条第1項該当

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25

Beaudette, Anita Laure. "Understanding complexity in household well-being and agroecosystem management in three communities of Yorito, Honduras." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ51052.pdf.

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26

Brown, Judith K., Jack R. Easley, Bonnie T. Poulos, and Merritt R. Nelson. "Assessment of Virus Disease Incidence and Whitefly Population in an Isolated Agroecosystem in Central Arizona." College of Agriculture, University of Arizona (Tucson, AZ), 1989. http://hdl.handle.net/10150/214279.

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A survey study was undertaken to identify the plant viruses, to document the occurrence of virus diseases, and to document the seasonal population dynamics of insect vectors in a semi-isolated agricultural site in Central Arizona. A typical year-round cropping history at the site consists of cotton and seasonal sequences of vegetables. The most abundant insects caught using 24-hr exposures of yellow sticky traps were whiteflies (Trialeurodes abutilonea Haldeman and Bemisia tabaci Genn.) and the cotton (or melon) aphid (Aphis gossypii Glover). Of the three, only B. tabaci and A. gossvpii are re

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27

Llovet, Martín Alba. "5 Role of biochar in N cycling in a Mediterranean agroecosystem: potential benefits and trade-offs." Doctoral thesis, Universitat Autònoma de Barcelona, 2021. http://hdl.handle.net/10803/673643.

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Les aportacions de nitrogen reactiu (N) mitjançant el procés Haber-Bosch (fixació industrial de N2 per produir fertilitzants) i el cultiu de lleguminoses són responsables de més de la meitat de l’aportació de N als ecosistemes terrestres. Aquests inputs excessius provinents dels agroecosistemes han augmentat els fluxos d’òxid nitrós (N2O), amoníac (NH3) i nitrat (NO3−), provocant efectes tals com l’acceleració de l’escalfament global, l’eutrofització i la reducció de l’ozó estratosfèric, entre d’altres. L’esmena del sòl amb biochar, el sòlid ric en carboni (C) produït per la conversió termo

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28

Smith, Ethan A. "Is everything connected? following the predators, pests, and plants within a no-till, western Montana agroecosystem /." CONNECT TO THIS TITLE ONLINE, 2006. http://etd.lib.umt.edu/theses/available/etd-12212006-142245/.

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29

Highland, H. Brett. "Ecology of the stalk borer Papaipema nebris (Guenee), (Lepidoptera:noctuidae), in the southwestern Virginia no-till corn agroecosystem." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/49794.

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30

Platt, Jason Owen. "The Use of Buckwheat Border Habitats to Attract Natural Enemies of Cucumber Beetles in a Cucurbit Agroecosystem." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/31448.

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The potential control of cucumber beetles, Acalymma vittatum (Fab.) and Diabrotica undecimpunctata howardi (Barber)(both Coleoptera: Chrysomelidae) two major pests of cucurbits, was assessed in a cucurbit agroecosystem by using buckwheat (Fagopyrum esculentum Moench) border habitat to attract the natural enemies, Celatoria diabroticae (Shimer) and Celatoria setosa (Coquillett) (both Diptera: Tachinidae) and Chauliognathus pennsylvanicus (Deg.) (Coleoptera: Cantharidae). Five different plants were seeded in the border and buckwheat dominated. Four natural enemy groups were also included as indi

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31

Bryan, Casey J. "THE EFFICACY OF COVER CROPS FOR POLLINATOR HABITAT PROVISION AND WEED SUPPRESSION IN A SOUTHERN ILLINOIS AGROECOSYSTEM." OpenSIUC, 2019. https://opensiuc.lib.siu.edu/theses/2489.

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Increases in agricultural intensification over the past century have resulted in significant alterations to the rural landscape across the Midwest. Pollinators are essential to sustain natural and managed ecosystems. They are vital for food production and their declines have been linked, in part, to a rise in intensive agricultural practices. There is a recognized need among numerous stakeholders to build sustainability into the management of agroecosystems to protect both the biotic and abiotic resources of these systems. The use of cover crops is gaining interest among agricultural produce

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32

Kizner, Michelle Cara. "Indirect effects of Argentine ant and honeydew-producing insect mutualisms on California red scale in a citrus agroecosystem." Diss., [La Jolla] : University of California, San Diego, 2010. http://wwwlib.umi.com/cr/ucsd/fullcit?p1477914.

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Thesis (M.S.)--University of California, San Diego, 2010.<br>Title from first page of PDF file (viewed July 16, 2010). Available via ProQuest Digital Dissertations. Includes bibliographical references (leaves 37-39).

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33

Allen, Michael Frederick. "The effects of earthworms on carbon and nitrogen flows through the soil microbial biomass in a corn agroecosystem." The Ohio State University, 1999. http://rave.ohiolink.edu/etdc/view?acc_num=osu1299759760.

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34

Walker, Jason. "Plant diversity and its effects on populations of cucumber beetles and their natural enemies in a cucurbit agroecosystem." Thesis, This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-08222008-063552/.

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35

Lourenço, Francisneide de Sousa. "Ambiente e agricultura: uso da terra pela agricultura familiar e modificações na paisagem no município de Itacoatiara." Universidade Federal do Amazonas, 2010. http://tede.ufam.edu.br/handle/tede/4230.

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Submitted by Elaine Lucia (lucia.elaine@live.com) on 2015-06-30T19:21:57Z No. of bitstreams: 1 Dissertação - Francisneide de Sousa Lourenço.pdf: 15922986 bytes, checksum: e2432fcb423205c538a19146ab0ab9b4 (MD5)<br>Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-07-01T13:46:26Z (GMT) No. of bitstreams: 1 Dissertação - Francisneide de Sousa Lourenço.pdf: 15922986 bytes, checksum: e2432fcb423205c538a19146ab0ab9b4 (MD5)<br>Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-07-01T14:2

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36

Silva, Mayara Karla Dantas da. "Avaliação da sustentabilidade na produção de mandioca no município de Pedras de Fogo PB." Universidade Estadual da Paraíba, 2013. http://tede.bc.uepb.edu.br/tede/jspui/handle/tede/1860.

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Made available in DSpace on 2015-09-25T12:20:50Z (GMT). No. of bitstreams: 1 PDF - Mayara Karla Dantas da Silva.pdf: 2153011 bytes, checksum: 2ae70001971a2a11d959861bbae4fe47 (MD5) Previous issue date: 2013-03-19<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This work is part of a larger research project called "Studies Network Systems and Research in Sustainability Indicators for Agroecosystems Based Practices in Family Farming and Agriculture Based on the Principles of Green Revolution in Northeast Brazil" and deals with the adaptation and application of MESMIS model -

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37

Muniz, Rodrigo de Almeida. "Integridade do ecossistema, avaliada a partir da dinâmica de temperatura de superfície e estoque de carbono no solo, na Bacia do Rio Corumbataí, SP." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/11/11152/tde-04122014-090516/.

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Este trabalho objetivou pesquisar a relação da temperatura de superfície (LST) e do estoque de carbono no solo (ECS) com os diferentes tipos de uso e cobertura do solo (UCT). Sabe-se que tais parâmetros podem ser influenciados pelas atividades antrópicas, podendo afetar a integridade do agroecossistema (IAG) da bacia do Rio Corumbataí (BRC). Entende-se por IAG, a capacidade de manutenção de suas propriedades \"primitivas\" e prestação de serviços ecossistêmicos à sociedade. Para alcançar o objetivo proposto, a dinâmica de UCT foi mapeada, a partir da classificação de imagens do satélite Landsa

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38

Morell, Soler Francisco Joaquín. "Soil organic carbon dynamics and carbon sequestration in a semiarid Mediterranean agroecosystem: effects of conservation tillage and nitrogen fertilization." Doctoral thesis, Universitat de Lleida, 2012. http://hdl.handle.net/10803/101151.

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El balanç entre l´entrada de C (dels residus vegetals) i sortides de C (principalment com CO2 de la descomposició del carboni orgànic del sòl -SOC-), determina el contingut de SOC, que és el depòsit de C més voluminós a la superfície terrestre. Als agroecosistemes semiàrids Mediterránis, l’aigua és el principal factor limitant del creixement del cultiu i de l´entrada de residus al sòl. Les pràctiques agronòmiques alternatives poden millorar el creixement vegetal i augmentar la quantitat de residus (entrada de C) en aquestos sistemes. No obstant això la resposta del contingut de SOC dependrà de

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39

Díez, Sanjuán Lucía. "Sociometabolic analysis of a traditional Mediterranean agroecosystem. Historical transition and Biocultural Heritage. (Les Oluges, Catalonia, c.1860-1959-1999)." Doctoral thesis, Universitat de Barcelona, 2019. http://hdl.handle.net/10803/667609.

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ith the spread of the Green Revolution from the mid-20th century, large part of the agricultural systems in the world experienced a series of transformations that have ultimately led to important sustainability problems. Acknowledging the sustainability problems of modern industrial agriculture, this PhD thesis analyses the historical transition of a Mediterranean agroecosystem from a traditional organic management to an industrialised functioning. Understanding how this transformation affected the sustainability of the agroecosystem, changing its structure and functioning, provides useful kno

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40

Abney, Mark Ray. "Population Dynamics of Heliothis virescens (F.) (Lepidoptera: Noctuidae) in a Host-Species Rich Agroecosystem: Implications for Insecticide Resistance Management." NCSU, 2005. http://www.lib.ncsu.edu/theses/available/etd-03302005-113849/.

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A three-year evaluation of crop host utilization by the tobacco budworm, Heliothis virescens (F.), was conducted from 2001 to 2003 in the central coastal plain of North Carolina. Monitoring of commercial tobacco and non-Bt cotton fields revealed spatial and temporal patterns of host use, and showed that tobacco budworm may be produced in tobacco throughout the growing season. Small plot trials conducted in 2002 and 2003 demonstrated a strong oviposition preference by tobacco budworm for tobacco when located adjacent to alternate crop hosts. The bodies of individual moths were analyzed for the

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Mestre, Arias Laia. "Intraguild interactions, trophic ecology and dispersal in spider assemblages." Doctoral thesis, Universitat Autònoma de Barcelona, 2012. http://hdl.handle.net/10803/117457.

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Les aranyes (Araneae) són un grup hiperdivers de depredadors àmpliament representat en comunitats naturals i en conreus, on s’alimenten de diferents tipus d’insectes i participen en el control biològic de plagues. Ocupen posicions intermèdies dins les xarxes tròfiques i estan implicades en interaccions intragremials amb altres depredadors. Tanmateix, la majoria d’estudis en ecologia tracten les aranyes com a un sol grup uniforme i, per tant, ignoren la gran diversitat d’interaccions interespecífiques i de connexions tròfiques en les comunitats d’artròpodes. Les xarxes tròfiques també estan inf

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42

Pettersson, Elin. "Sustainability Evaluations and Development Challenges of Cacao Farms : A Minor Field Study in Huila, Colombia." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-51765.

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An intensification of 200 000 tonnes of cacao is planned for the Colombian cacao production until 2021. This could lead large negative effects on the Colombian nature and biodiversity if the current smallholdings of agroforestry were abandoned in favour for large monocultures. The main objective for this study was to get general overview regarding sustainability and development challenges of the current cacao farming in Huila, Colombia. This was conducted through a minor field study in the area over eight weeks were five farms were documented together with semi-structured interviews and partic

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Silva, Rafael Braga da. "Ocorrência de parasitoides associados a pragas do milho (Zea mays L.) cultivado em diferentes sistemas de produção." Universidade Federal de São Carlos, 2013. https://repositorio.ufscar.br/handle/ufscar/1799.

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Made available in DSpace on 2016-06-02T19:29:56Z (GMT). No. of bitstreams: 1 5149.pdf: 19234114 bytes, checksum: 746c92ee6c0b11a82da926b06b913747 (MD5) Previous issue date: 2013-03-27<br>Financiadora de Estudos e Projetos<br>The aim of this study was to determine the occurrence of parasitoids of the major pests of maize (Zea mays L.) cultivated in different production systems. The experiment was conducted at the Embrapa Milho e Sorgo, in Sete Lagoas, State of Minas Gerais, Brazil, in conventional production systems, organic, organic intercropped with beans (Phaseolus vulgaris L.) and organic

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SILVA, Lenice. "Sustentabilidade da caprinocultura na região do agreste paraibano." Universidade Federal de Campina Grande, 2018. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1927.

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Submitted by Maria Medeiros (maria.dilva1@ufcg.edu.br) on 2018-10-09T15:00:04Z No. of bitstreams: 1 LENICE SILVA - DISSERTAÇÃO (PPGRN) 2018.pdf: 1716487 bytes, checksum: 5ab6867163fdb29ffc164b11f5c6a772 (MD5)<br>Made available in DSpace on 2018-10-09T15:00:04Z (GMT). No. of bitstreams: 1 LENICE SILVA - DISSERTAÇÃO (PPGRN) 2018.pdf: 1716487 bytes, checksum: 5ab6867163fdb29ffc164b11f5c6a772 (MD5) Previous issue date: 2018-06<br>O objetivo geral desta pesquisa foi avaliar a sustentabilidade da caprinocultura nos municípios de São João do Cariri e São José dos Cordeiros, estado da Paraíba, fazen

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Zeni, Jaquelini de Oliveira. "A decade later : the effects of land use changes in biodiversity patterns of stream fish assemblages from a tropical agroecosystem /." São José do Rio Preto, 2017. http://hdl.handle.net/11449/150809.

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Orientador: Lilian Casatti<br>Coorientador: David J. Hoeinghaus<br>Banca: Dana Infante<br>Banca: Jani Heino<br>Banca: Robert Hughes<br>Banca: Tadeu Siqueira Barros<br>Resumo: Mudanças ambientais associadas a conversão da vegetação nativa em agroecossistemas são consideradas um poderoso motor de homogeneização da ictiofauna no Antropoceno. Assim, é primordial entender como subsequentes alterações em ambientes já impactados podem afetar o ambiente aquático e as assembleias de peixes. Avaliar se e como subsequentes mudanças ambientais nas escalas regional (microbacia) e local (descritores do cana

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Bamminger, Chris [Verfasser], and Ellen [Akademischer Betreuer] Kandeler. "Biochar amendment for C sequestration in a temperate agroecosystem : implications for microbial C- and N-cycling / Chris Bamminger ; Betreuer: Ellen Kandeler." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2018. http://d-nb.info/1155824075/34.

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Apolari, João Paulo. "Sistema de produção orgânico de milho (Zea mays L.), feijão (Phaseolus vulgaris L.) e mandioca (Manihot sculenta Crantz) consorciados com soqueira de cana-deaçúcar (Sacharum spp.)." Universidade Federal de São Carlos, 2009. https://repositorio.ufscar.br/handle/ufscar/55.

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Made available in DSpace on 2016-06-02T18:57:22Z (GMT). No. of bitstreams: 1 2612.pdf: 3727772 bytes, checksum: a07242a151d45c71c3e73e29300d6100 (MD5) Previous issue date: 2009-06-22<br>Greater stability of an agroecosystem can be achieved through the consortium system under organic management, becomes an important environmental factor to a highest stability of the agroecosystem. The objective was to study a system of production for organic crops of maize (Zea mays L., cv. BR 106), bean (Phaseolus vulgaris L., cultivar IAC Pérola) and manioc (Manihot esculenta CRANTZ, cv. IAC 15), intercropp

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Apolari, João Paulo. "Sistema de produção orgânico de milho (Zea mays L.), feijão (Phaseolus vulgaris L.) e mandioca (Manihot esculenta Crantz) consorciados com soqueira de cana-deaçúcar (Sacharum spp.)." Universidade Federal de São Carlos, 2009. https://repositorio.ufscar.br/handle/ufscar/82.

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Made available in DSpace on 2016-06-02T18:57:29Z (GMT). No. of bitstreams: 1 2612.pdf: 3727772 bytes, checksum: a07242a151d45c71c3e73e29300d6100 (MD5) Previous issue date: 2009-06-22<br>Greater stability of an agroecosystem can be achieved through the consortium system under organic management, becomes an important environmental factor to a highest stability of the agroecosystem. The objective was to study a system of production for organic crops of maize (Zea mays L., cv. BR 106), bean (Phaseolus vulgaris L., cultivar IAC Pérola) and manioc (Manihot esculenta CRANTZ, cv. IAC 15), intercropp

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Patrick, Andrew Parker. "INNER BLUEGRASS AGRICULTURE: AN AGROECOLOGICAL PERSPECTIVE, 1850-1880." UKnowledge, 2012. http://uknowledge.uky.edu/history_etds/3.

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This study examines agriculture in the Inner Bluegrass Region of Central Kentucky from 1850 to 1880. It utilizes an agroecological perspective, which interprets agriculture through the lens of ecology, to highlight the complex natural and cultural factors that combined to form one of the nation's most prosperous agricultural systems during the nineteenth century. Chapter One explores the agroecosytem Bluegrass farmers created and maintained, emphasizing dynamics in crop and livestock diversity and agricultural technology. Chapter Two examines the African-American labor force that played a key

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Black, Ellen Marie. "Assessing the impacts of native freshwater mussels on nitrogen cycling microbial communities using metagenomics." Diss., University of Iowa, 2018. https://ir.uiowa.edu/etd/6059.

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The Upper Mississippi River (UMR) basin contributes over 50,000 metric tons of nitrogen (N) to the Gulf of Mexico each year, resulting in a “dead zone” inhospitable to aquatic life. Land-applied N (fertilizer) in the corn-belt is attributed with a majority of the N-load reaching the Gulf and is difficult to treat as run-off is considered a non-point source of pollution (i.e. not from a pipe). One solution to this “grand challenge” of intercepting N pollution is utilizing filter-feeding organisms native to the UMR. Freshwater mussel (order Unionidae) assemblages collectively filter over 14 bill

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