Relevant bibliographies by topics / Cotton crops

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Academic literature on the topic 'Cotton crops'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 February 2022

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Journal articles on the topic "Cotton crops"

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Adhikari, Pradip, Nina Omani, Srinivasulu Ale, Paul B. DeLaune, Kelly R. Thorp, Edward M. Barnes, and Gerrit Hoogenboom. "Simulated Effects of Winter Wheat Cover Crop on Cotton Production Systems of the Texas Rolling Plains." Transactions of the ASABE 60, no. 6 (2017): 2083–96. http://dx.doi.org/10.13031/trans.12272.

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Abstract. Interest in cover crops has been increasing in the Texas Rolling Plains (TRP) region, mainly to improve soil health. However, there are concerns that cover crops could potentially reduce soil water and thereby affect the yield of subsequent cash crops. Previous field studies from this region have demonstrated mixed results, with some showing a reduction in cash crop yield due to cover crops and others indicating no significant impact of cover crops on subsequent cotton fiber yield. The objectives of this study were to (1) evaluate the CROPGRO-Cotton and CERES-Wheat modules within the cropping system model (CSM) of the Decision Support System for Agrotechnology Transfer (DSSAT) for the TRP region, and (2) use the evaluated model to assess the long-term effects of growing winter wheat as a cover crop on water balances and seed cotton yield under irrigated and dryland conditions. The two DSSAT crop modules were calibrated using measured data on soil water and crop yield from four treatments: (1) irrigated cotton without a cover crop (CwoC-I), (2) irrigated cotton with winter wheat as a cover crop (CwC-I), (3) dryland cotton without a cover crop (CwoC-D), and (4) dryland cotton with a winter wheat cover crop (CwC-D) at the Texas A&M AgriLife Research Station at Chillicothe from 2011 to 2015. The average percent error (PE) between the CSM-CROPGRO-Cotton simulated and measured seed cotton yield was -10.1% and -1.0% during the calibration and evaluation periods, respectively, and the percent root mean square error (%RMSE) was 11.9% during calibration and 27.6% during evaluation. For simulation of aboveground biomass by the CSM-CERES-Wheat model, the PE and %RMSE were 8.9% and 9.1%, respectively, during calibration and -0.9% and 21.8%, respectively, during evaluation. Results from the long-term (2001-2015) simulations indicated that there was no substantial reduction in average seed cotton yield and soil water due to growing winter wheat as a cover crop. Keywords: CERES-Wheat, Cover crop, Crop simulation model, CROPGRO-Cotton, DSSAT, Seed cotton yield, Soil water.
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SILVA FILHO, JOÃO LUÍS DA, ANA LUÍZA DIAS COELHO BORIN, and ALEXANDRE CUNHA DE BARCELLOS FERREIRA. "DRY MATTER DECOMPOSITION OF COVER CROPS IN A NO-TILLAGE COTTON SYSTEM." Revista Caatinga 31, no. 2 (June 2018): 264–70. http://dx.doi.org/10.1590/1983-21252018v31n201rc.

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ABSTRACT No-tillage cotton systems require soil coverage with cover crop residue for a longer time due to the late cycle of cotton. However, decomposition rates may vary between cover crops, and the adjustment of models to describe it is critical to no-tillage cotton management. Two non-linear regression models, exponential (EM) and Michaelis-Menten (MM), were adjusted to dry matter decomposition of cover crops in a cotton no-tillage system, in Brazil. Three field trials were performed in 2012 for the cover crops Urochloa ruziziensis (brachiaria), Pennisetum glaucum (pearl millet), and Cajanus cajan (pigeon pea). Samples of cover crop were collected at 20, 50, 70, 110, 140, and 170 days after sowing upland cotton to measure dry matter decomposition. MM showed better adjustment than EM for all cover crops. The estimations of half-life parameters were different between the cover crops, suggesting that each cover crop has its own rate of decomposition. For pearl millet, brachiaria, and pigeon pea, the half-life estimation by exponential model was over the MM in 9, 12, and 12 days.
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Tillman, P. G., and T. E. Cottrell. "Case Study: Trap Crop with Pheromone Traps for SuppressingEuschistus servus(Heteroptera: Pentatomidae) in Cotton." Psyche: A Journal of Entomology 2012 (2012): 1–10. http://dx.doi.org/10.1155/2012/401703.

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The brown stink bug,Euschistus servus(Say), can disperse from source habitats, including corn,Zea maysL., and peanut,Arachis hypogaeaL., into cotton,Gossypium hirsutumL. Therefore, a 2-year on-farm experiment was conducted to determine the effectiveness of a sorghum (Sorghum bicolor(L.) Moench spp.bicolor) trap crop, with or withoutEuschistusspp. pheromone traps, to suppress dispersal of this pest to cotton. In 2004, density ofE. servuswas lower in cotton fields with sorghum trap crops (with or without pheromone traps) compared to control cotton fields. Similarly, in 2006, density ofE. servuswas lower in cotton fields with sorghum trap crops and pheromone traps compared to control cotton fields. Thus, the combination of the sorghum trap crop and pheromone traps effectively suppressed dispersal ofE. servusinto cotton. Inclusion of pheromone traps with trap crops potentially offers additional benefits, including: (1) reducing the density ofE. servusadults in a trap crop, especially females, to possibly decrease the local population over time and reduce the overwintering population, (2) reducing dispersal ofE. servusadults from the trap crop into cotton, and (3) potentially attracting more dispersingE. servusadults into a trap crop during a period of time when preferred food is not prevalent in the landscape.
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Tingle, C. H., and J. M. Chandler. "The Effect of Herbicides and Crop Rotation on Weed Control in Glyphosate-Resistant Crops." Weed Technology 18, no. 4 (December 2004): 940–46. http://dx.doi.org/10.1614/wt-02-126.

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Field studies were conducted from 1998 through 2000 to determine the influence of crop rotation and level of herbicide system for johnsongrass, entireleaf morningglory, and smellmelon control in glyphosate-resistant cotton and corn. Three different crop rotation schedules were used including cotton–cotton–cotton, cotton–corn–cotton, and corn–cotton–corn. Herbicide systems involving various degrees of input levels (low, medium, and high) were compared with a conventional standard program. In 1998, weed control ranged from 80 to 95% for all herbicide systems when the rotation was corn–cotton–corn. In 1999 and 2000, the low-input herbicide system controlled entireleaf morningglory 76 to 78% late in the season. Decreased smellmelon control (78%) was also observed with the conventional standard during this same period. In the cotton–corn–cotton rotation, late-season entireleaf morningglory control decreased each year in the low-input system, regardless of crop. In 2000, late-season evaluations indicated lower weed control of all three species with the conventional standard program compared with the other input systems. Yield data from 2000 suggested that corn and seed cotton yields were influenced by crop rotation.
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Verma, D., M. H. Kalubarme, G. P. Saroha, K. S. Mohan, K. C. Ravi, and A. N. Singh. "MONITORING CHANGES IN COTTON ACREAGE AND ALTERNATE HOST CROPS OF COTTON BOLLWORM USING REMOTE SENSING AND GIS IN MAJOR COTTON GROWING REGIONS OF INDIA." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-3/W6 (July 26, 2019): 525–33. http://dx.doi.org/10.5194/isprs-archives-xlii-3-w6-525-2019.

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<p><strong>Abstract.</strong> Cotton cultivation has made rapid strides in India since the introduction of Bt cotton, which provided effective protection against its major pest, <i>Helicoverpa armigera</i> and other bollworms. The presence of alternate host crops for cotton bollworms targeted by Bt cotton play a key role in resistance evolution to the <i>in planta</i> expressed Bt proteins. Several host crops for <i>H. armigera</i> such as pigeonpea, sorghum, tomato, chilli, sunflower and corn are cultivated alongside Bt cotton. Change detection in the extent of cotton and alternate host crops of cotton bollworm was conducted using IRS LISS-III data in Punjab, Haryana, Rajasthan, Gujarat, Maharashtra, Andhra Pradesh and Karnataka states. The changes in the extent of cotton and host crops were monitored using multi-temporal data of 2002, 2004 and 2008. The results indicated that Bt cotton (Hirsutum) has almost completely replaced the traditional Indian cotton (<i>Gossypium arborium</i>). Several alternate host crops of H. armigera were grown along with cotton. Pigeonpea was the major host crop in almost all the locations. Chilies dominated in Andhra Pradesh, sunflower in Karnataka and corn in Gujarat. These host crops serve as ‘natural’ refuge of <i>H. armigera</i> and possibly, for this reason this pest has not evolved resistance to the Bt expressed by Bollgard II even after 16 seasons of intensive cultivation; whereas the pink bollworm, a monophagous cotton bollworm, had developed resistance to Cry1Ac in 2009 and to Cry1Ac and Cry2Ab in 2015.</p>
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Vishwanath Gowdru, Nithya. "A Resources use efficiency analysis of Bt and Non Bt cotton farmers in Karnataka, India." Journal of Global Economy 9, no. 3 (October 3, 2013): 175–81. http://dx.doi.org/10.1956/jge.v9i3.283.

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Cotton is the major commercial crop amongst all cash crops in India and provides livelihood to more than 60 million people in its cultivation, processing and textile industry. Cotton crop is infested by various pests causing significant yield losses therefore Bt cotton was introduced in India to reduce pesticide consumption and also increase productivity. Since introduction there has been ongoing debate on the superiority and/ or inferiority of Bt cotton over non Bt cotton. Therefore the present study was undertaken to examine the Bt cotton technology on output and efficiency of inputs used in cotton cultivation in Karnataka state of South India during 2007. Primary data was collected from 90 farmers cultivating Bt and non-Bt cotton in Haveri district, Karnataka, India. The Cobb-Douglas production and decomposition analysis techniques were used to estimate the influence of factors and Bt technology on output change. The production function analysis indicated that the co-efficients of expenditure on fertilizers, labour, plant protection chemicals and land were significant in case of Bt cotton cultivation. The result of Resource use efficiency analysis showed that efficient use of labour, fertilizers and seeds had contributed the most to the difference in returns between Bt-cotton and non-Bt cotton cultivation. Contribution of differences in the quantity of inputs used to higher returns from Bt cotton to the measured difference in gross returns between Bt and non-Bt cotton was 56.56 per cent, while that of the efficiency in the use of inputs was 23.83 per cent. Key words: Bt cotton, Resource use efficiency, Decomposition analysis
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Palhano, Matheus G., Jason K. Norsworthy, and Tom Barber. "Cover Crops Suppression of Palmer Amaranth (Amaranthus palmeri) in Cotton." Weed Technology 32, no. 1 (November 17, 2017): 60–65. http://dx.doi.org/10.1017/wet.2017.97.

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AbstractWith the recent confirmation of protoporphyrinogen oxidase (PPO)-resistant Palmer amaranth in the US South, concern is increasing about the sustainability of weed management in cotton production systems. Cover crops can help to alleviate this problem, as they can suppress weed emergence via allelochemicals and/or a physical residue barrier. Field experiments were conducted in 2014 and 2015 at the Arkansas Agricultural Research and Extension Center to evaluate various cover crops for suppressing weed emergence and protecting cotton yield. In both years, cereal rye and wheat had the highest biomass production, whereas the amount of biomass present in spring did not differ among the remaining cover crops. All cover crops initially diminished Palmer amaranth emergence. However, cereal rye provided the greatest suppression, with 83% less emergence than in no cover crop plots. Physical suppression of Palmer amaranth and other weeds with cereal residues is probably the greatest contributor to reducing weed emergence. Seed cotton yield in the legume and rapeseed cover crop plots were similar when compared with the no cover crop treatment. The seed cotton yield collected from cereal cover crop plots was lower than from other treatments due to decreased cotton stand.
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Duzy, Leah M., and Ted S. Kornecki. "Effects of cover crop termination and cotton planting methods on cotton production in conservation systems." Renewable Agriculture and Food Systems 34, no. 5 (December 14, 2017): 406–14. http://dx.doi.org/10.1017/s1742170517000631.

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AbstractIn conservation agriculture, cover crops are utilized to improve soil properties and to enhance cash crop growth. One important part of cover crop management is termination. With smaller profit margins and constraints on time and labor, producers are searching for ways to reduce time and labor required to terminate cover crops while maintaining or increasing profitability. This study examined the effect of 11 different combinations of terminating cereal rye (Secale cerealeL.) and planting cotton (Gossypium hirsutumL.) on population, seed cotton yield, total costs and net returns; and how combined operations affect labor, fuel consumption and carbon (CO2) emissions in a conservation system. Cereal rye followed by cotton was planted in central Alabama during the 2009–2011 crop years. Treatments included cotton planted directly into standing cereal rye, cover crops terminated at early milk growth stage using mechanical (roller or roller/crimper) with or without chemical termination (spraying) followed by cotton planting, and cover crop termination combined with cotton planting using spraying with or without rolling termination. While the 2011 crop year had the lowest plant populations, there was no year effect on seed cotton yields, total costs or net returns. Rolling with or without spraying yielded higher plant populations (26%), seed cotton yields (18.3%) and net returns (17.2%) than cotton planted into standing rye; however, rolling with or without spraying also had 23.8% higher costs due to increased fuel usage, machinery and labor hours, and yield varying costs. While rolling with spraying had slightly higher total costs compared with rolling alone (6.5%), plant populations, seed cotton yields and net returns were 11.42%, 6.4% and 6.5% higher, respectively. Converting from three separate operations for cover crop termination and cotton planting to rolling and spraying combined with planting, producers could potentially reduce CO2emissions from fuel use and labor hours associated with cover crop termination and cotton planting by up to 51%.
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Cooper, J. L. "A grower survey of rotations used in the New South Wales cotton industry." Australian Journal of Experimental Agriculture 39, no. 6 (1999): 743. http://dx.doi.org/10.1071/ea98055.

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Summary. Cotton growers in the Macquarie, Namoi and Gwydir Valleys of New South Wales were surveyed in 1992 to determine what crops are grown in rotation with cotton, how frequently rotation crops are used, and what influences the grower’s choice of rotation system. A total of 155 properties were surveyed, covering 100, 49 and 58% of irrigated cotton produced in the Macquarie, Namoi and Gwydir Valleys, respectively. Although a large part of the 1992–93 cotton crop (61% by area) did not follow a rotation crop, there was widespread interest in rotations and 70% of properties had used rotations. Wheat was by far the most widely grown rotation crop, but there was considerable interest in other crops, especially legumes. The perceived benefits from rotation crops reported by most growers were better soil structure, less disease in following cotton, and more soil organic matter. However, when asked why they preferred certain rotation crops, these factors did not rate highly with growers. Crops that were easy to grow and gave the best financial returns possessed the main features sought in a rotation crop. The greatest problem in growing rotation crops was a lack of irrigation water. It is not surprising that this problem ranked highly because when the survey was conducted, the Namoi and Gwydir Valleys had water allocations of 15 and 0%, respectively. Not having suitable equipment to sow rotation crops was also a problem for 17% of growers, but 10% encountered no problems. The survey also investigated the use of permanent beds and retained hills. These practices have benefits for soil structure, and are almost essential for rotation crops which need to be sown as soon as the cotton is harvested. Over 80% of growers using rotations had adopted some form of permanent beds or retained hills. The benefit which ranked highest was a reduction in costs, followed by less soil compaction. Some growers (44%) who used permanent beds or retained hills had no problems, but handling the trash and keeping the rows straight were of concern to others.
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Zablotowicz, Robert M., Krishna N. Reddy, L. Jason Krutz, R. Earl Gordon, Ryan E. Jackson, and Leslie D. Price. "Can Leguminous Cover Crops Partially Replace Nitrogen Fertilization in Mississippi Delta Cotton Production?" International Journal of Agronomy 2011 (2011): 1–9. http://dx.doi.org/10.1155/2011/135097.

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Petroleum prices impact cotton nitrogen (N) fertilization cost. A field study was conducted from 2005 to 2007 to assess the interactions of cover crop (none, Austrian winter pea (Pisum sativumspp.arvense) or hairy vetch (Vicia villosaRoth)) and N fertilization (0, 67 or 134 kg N/ha applied at planting) on N availability and cotton yield under reduced-tillage management. Nitrogen content in desiccated residues averaged 49, 220, and 183 kg N/ha, in no cover crop, Austrian winter pea, and hairy vetch, respectively. Seventy percent of N in the above ground cover crop was derived from biological N fixation. In 2005, cover crops decreased cotton yield, while fertilizer N had no effect. In 2006, cover crops did not affect yield, but yield was positively correlated with N rate. In 2007, in no N plots, cotton yields were 65% higher in cover crops than in no cover crop. However, yield from N fertilized cover crop plots were similar to N fertilized no cover plots. These results indicate that leguminous cover crops can provide over 150 kg N/ha, but this N may not be as effective as fertilizer N for lack of synchronization between cotton N requirements and N release from residues.
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Dissertations / Theses on the topic "Cotton crops"

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Ellsworth, P. C., D. L. Meade, D. N. Byrne, E. A. Draeger, and J. P. Chernicky. "Progress on the Use of Trap Crops for Whitefly Suppression." College of Agriculture, University of Arizona (Tucson, AZ), 1993. http://hdl.handle.net/10150/209575.

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Article is abstract and references only
In 1992, a repeat of a trap -cropping experiment was conducted for the suppression of sweetpotato whiteflies in Pima (S-6) cotton (see Ellsworth et al. 1992). The 1991 experiment showed some promise, but was characterized by low to moderate and later infestations of whiteflies than was desired. The 1992 experimental design (land area = 9.5 acres) was modified to accomplish three improvements: 1) the cotton crop area was doubled in size to 8 rows by 50 ft to improve the ratio of crop to trap area, 2) a fourth treatment was added to form a Latin square design which consisted of cotton plots surrounded only by bareground (i.e., no trap crop): the other three were surrounded by Wright groundcherry that was untreated or treated with 1X or 2X rates of soil-applied aldicarb, and 3) melons (1 row X667') were late planted between blocks to ensure locally abundant whiteflies during the time of the test. The melons were watered regularly in order to retain whiteflies until the start of the test. Early groundcherry establishment was variable and later compromised by insufficient water. This prompted later than usual flushes of groundcherry growth and delayed canopy development. This fact coupled by the intense level of whitefly movement following melon dry -down effectively overwhelmed the insufficiently developed trap crop. Aldicarb was applied on two dates (7/29 & 8/15), and whiteflies were sampled from all plots five times through August. The sampling data are preliminary at this point, but several observations were apparent: 1) the groundcherry trap crop was insufficiently developed to protect the Pima crop, 2) the addition of melons to the system dramatically increased the ,cumbers of locally abundant whiteflies, 3) maintaining the melons in good condition (i.e., well- watered) effectively retained whiteflies in the melons until dry-down, 4) upon dry-down, the melons released overwhelming numbers of adult whiteflies which could not be suppressed on the groundcherry trap crop before reaching the adjacent cotton, 5) the groundcherry was still selectively attractive to the whiteflies (relative to cotton), but was insufficiently developed w trap and retain the huge numbers of dispersing whiteflies, 6) soil - applied aldicarb did accomplish some degree of control of whiteflies on the groundcherry plants, but was inadequate in the face of the tremendous immigration of whitefly adults, 7) the intense whitefly pressure ultimately killed the majority of immature groundcheny plants with the aldicarb-treated plants lasting somewhat longer than the untreated plants, and 8) the yield and quality of the adjacent, late -planted Pima crop was commercially unacceptable and judged to be virtually a total loss. The failure of this implementation of the trap -cropping concept does not preclude the possibility that a better implementation would have succeeded; however, the observation that melons in close proximity to the test area dramatically changed the number of locally dispersing adult whiteflies cannot be denied. It would seem unlikely that a suitable trap crop system could be developed where such an intense proximate source and near instantaneous release of thousands of whiteflies (i.e., at dry-down of melons) is occurring.
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Delaney, Dennis Patrick Monks C. Dale. "Management of Ultra Narrow Row Cotton." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Summer/Dissertations/DELANEY_DENNIS_10.pdf.

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Williams, Livy III, Timothy J. Denney, and John C. Palumbo. "Can Resistance to Chloronicotynl Insecticides be Averted in Arizona Field Crops?" College of Agriculture, University of Arizona (Tucson, AZ), 1998. http://hdl.handle.net/10150/210363.

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A resistance management program was initiated in Arizona in 1995, the initial goal of which was to sustain the efficacy of imidacloprid (Admire®) against Bemisia in vegetable crops. Due to the anticipated registration of additional chloronicotinyl (and related neonicotinyl) insecticides in Arizona, project objectives were subsequently broadened to address management of this entire class of insecticides in Arizona field crops. Results from three years of statewide monitoring of whiteflies from cotton indicated that whitefly populations in Arizona have become significantly less susceptible to imidacloprid in each of the past two years and significant geographical differences were described. However, no evidence was found of reduced field performance of imidacloprid in vegetables. Additionally, laboratory studies subjecting Arizona whiteflies to selection with imidacloprid did not increase levels of resistance beyond those occurring in the field. A study exploring the influence of cropping system differences on imidacloprid use (Admire® and Provado®) revealed no major differences in susceptibility to this insecticide between populations of whiteflies in central and southwestern Arizona. However, distinct seasonal shifts to lower susceptibility from 1996 to 1997 were observed in the Dome Valley of southwestern Arizona. Susceptibility of Arizona whitefly populations to imidacloprid was highly correlated with susceptibility to acetamiprid but was unrelated to susceptibility to CGA-293343. There is an urgent need to harmonize chemical use and resistance management efforts in Arizona cotton, vegetables and melons to avoid conflicts resulting from movement of pests between crops.
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Liu, Laipan, Meijing Gao, Song Yang, Shaoyan Liu, Yidong Wu, Yves Carrière, and Yihua Yang. "Resistance to Bacillus thuringiensis toxin Cry2Ab and survival on single-toxin and pyramided cotton in cotton bollworm from China." WILEY, 2017. http://hdl.handle.net/10150/623283.

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Evolution of Helicoverpa armigera resistance to Bacillus thuringiensis (Bt) cotton producing Cry1Ac is progressing in northern China, and replacement of Cry1Ac cotton by pyramided Bt cotton has been considered to counter such resistance. Here, we investigated four of the eight conditions underlying success of the refuge strategy for delaying resistance to Cry1Ac+Cry2Ab cotton, a pyramid that has been used extensively against H.armigera outside China. Laboratory bioassays of a Cry2Ab-selected strain (An2Ab) and a related unselected strain (An) reveal that resistance to Cry2Ab (130-fold) was nearly dominant, autosomally inherited, and controlled by more than one locus. Strong cross-resistance occurred between Cry2Ab and Cry2Aa (81-fold). Weaker cross-resistance (18- to 22-fold) between Cry2Ab and Cry1A toxins was also present and significantly increased survival of An2Ab relative to An on cotton cultivars producing the fusion protein Cry1Ac/Cry1Ab or Cry1Ac. Survival on Cry1Ac+Cry2Ab cotton was also significantly higher in An2Ab than in An, showing that redundant killing on this pyramid was incomplete. Survival on non-Bt cotton did not differ significantly between An2Ab and An, indicating an absence of fitness costs affecting this trait. These results indicate that a switch to three-toxin pyramided cotton could be valuable for increasing durability of Bt cotton in China.
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Crane, Andrew John. "The spectral detection of salt stress in cotton." Thesis, University of Portsmouth, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292358.

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Thacker, Gary W., Leon Moore, and Peter C. Ellsworth. "Trap Crops as a Component of a Community-Wide Pink Bollworm Control Program." College of Agriculture, University of Arizona (Tucson, AZ), 1993. http://hdl.handle.net/10150/209539.

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Trap crops were employed against the pink bollworm (PBW) as a part of a community-wide IPM program in Pima County, AZ. Levels of PBW larvae in the early squares of the trap crops were extraordinarily high, indicating that the trap crops were drawing overwintered PBW moths in from wide areas. This concentrated the overwintered moths in small areas where they could be easily and economically destroyed.
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Hodgson, Lucien Guy, and n/a. "Cotton crop condition assessment using arial video imagery." University of Canberra. Applied Science, 1991. http://erl.canberra.edu.au./public/adt-AUC20060725.144909.

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Cotton crop condition was assessed from an analysis of multispectral aerial video imagery. Visible-near infrared imagery of two cotton fields was collected towards the end of the 1990 crop. The digital analysis was based on image classification, and the accuracies were assessed using the Kappa coefficient of agreement. The earliest of three images proved to be best for distinguishing plant variety. Vegetation index images were better for estimating potential yield than the original multispectral image; so too were multi-channel images that were transformed using vegetation indices or principal component analysis. The seedbed preparation rig used, the nitrogen application rate and three plant varieties, a weed species and two cotton cultivars, could all be discriminated from the imagery. Accuracies were moderate for the discrimination of plant variety, tillage treatment and nitrogen treatment, and low for the estimation of potential yield.
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Chernicky, J. P., C. A. Rodgers, E. S. Heathman, and K. C. Hamilton. "Potential Injury to Rotational Crops Following Single or Multiple Applications of Bladex to Cotton 3." College of Agriculture, University of Arizona (Tucson, AZ), 1990. http://hdl.handle.net/10150/208287.

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Thacker, Gary W., Leon Moore, Peter C. Ellsworth, and Jack Combs. "Evaluation of Trap Crops as a Component of a Community-Wide Pink Bollworm Control Program." College of Agriculture, University of Arizona (Tucson, AZ), 1994. http://hdl.handle.net/10150/209637.

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Trap crops were evaluated as a part of a community -wide pink bollworm (PBW) control program. We measured extraordinarily high numbers of PBW larvae in the trap crops in 1992, which indicated that the trap crops were attracting PBW moths from wide areas. However, we have no direct way of measuring any effect this would have on the main crop. Overall PBW populations were very low in 1993. While PBW numbers drastically declined in the community, this study offers no conclusive evidence as to whether trap crops are an effective component of a community-wide IPM program.
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Heuberger, Shannon. "Understanding Transgene Flow from Bt Cotton into Non-Bt Cotton Fields and its Consequences for Pest Resistance Evolution." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/196057.

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Refuges of non-Bacillus thuringiensis (Bt) cotton are used to delay Bt resistance in several key insect pests. In 2004, I discovered that Bt cotton plants sometimes enter refuges via the seed bag, and hypothesized that this type of gene flow could have important effects on resistance evolution in insect pests. In the research described herein, I investigated the sources of Bt plants in the non-Bt cotton seed supply and assessed the potential implications of this gene flow on pest resistance evolution. I report results from an empirical study of gene flow in 15 non-Bt cotton seed production fields, as well as results from simulation modeling studies of gene flow from one-toxin and two-toxin Bt cotton. The current policy on gene flow from genetically engineered crops in the United States is also reviewed, including the implications of my research findings for policymakers. Key findings of this study included the prominent role of seed-mediated gene flow in the seed-production setting, and the utility of a geographic information system (GIS) ring analysis approach for describing pollen-mediated gene flow in cotton fields. Modeling results indicated that high rates of gene flow of Bt cotton into refuges could have large effects on pest resistance evolution under certain sets of assumptions, particularly in parts of the world where farm-saved seed is planted year after year in cotton fields. It appears that some of these effects could be mitigated by using non-cotton refuges or by using plants that contain linked transgenes that confer multiple toxins. There are no clear regulations in the United States regarding gene flow of Bt cotton into refuge seed or into seed production fields of non-Bt cotton, as Bt cotton has been deregulated following extensive safety testing. Nevertheless, results from this research suggest that limiting gene flow into refuge seed could be important for sustaining the efficacy of Bt cotton against targeted insect pests in regions where refuges are used.
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Books on the topic "Cotton crops"

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Jenkins, Peter T. The sugar industry and cotton crops. Hauppauge, N.Y: Nova Science Publishers, 2010.

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Namibian Economic Policy Research Unit., ed. Food crops or cash crops in the northern communal areas of Namibia: Setting a framework for a research agenda. Ausspannplatz, Windhoek, Namibia: Namibian Economic Policy Research Unit, 2001.

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Ali, Mubarik. Supply response of major crops in Pakistan: A simultaneous equation approach. Islamabad: Directorate of Agricultural Policy and Chemonics International Consulting Divison for the Economic Analysis Network Project in collaboration with the Ministry of Food, Agriculture, and Cooperatives, Government of Pakistan, and the United States Agency for International Development, 1988.

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Improving cash crops in Africa: Factors influencing the productivity of cotton, coffee, and tea grown by smallholders. Washington, D.C: World Bank, 1993.

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T, Kuznet͡sov N., ed. Isparenie s oroshaemykh poleĭ Sredneĭ Azii. Moskva: "Nauka", 1990.

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Agricultural and Food Policy Center (Tex.). Impacts of the elimination of organophosphates and carbamates from [type of crop]. College Station, Tex: Agricultural and Food Policy Center, Dept. of Agricultural Economics, Texas Agricultural Experiment Station, Texas Agricultural Extension Service, Texas A&M University, 1999.

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Andow, David Alan, and A. Hilbeck. Environmental risk assessment of genetically modified organisms: Challenges and opportunities with bt cotton in Vietnam. Wallingford, Oxforshire, UK: CABI Pub., 2008.

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Afro Asian Conclave (2012 National Institute of Rural Development). BT cotton and beyond: Status and implication of genetically engineered crops and post GE technologies for small farmers in Africa and Asia. Medak: Deccan Development Society, 2012.

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Mkandawire, R. W. Annual progress report: Cotton productivity research : cotton agronomy, 2006/07 crop season. [Thondwe, Malawi: Makoka Experimental Station, 2007.

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Agbobli, C. A. Situation de référence sur les principales cultures d'exportation du Togo: Coton, café, cacao, noix de coco. Lomé, Togo: Institut togolais de recherche agronomique (ITRA), 2007.

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Book chapters on the topic "Cotton crops"

1

Hague, Steve, Lori Hinze, and James Frelichowski. "Cotton." In Oil Crops, 257–85. New York, NY: Springer New York, 2009. http://dx.doi.org/10.1007/978-0-387-77594-4_8.

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Poehlman, John Milton. "Breeding Cotton." In Breeding Field Crops, 556–91. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-015-7271-2_20.

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Hancock, James F. "Cotton." In Plantation Crops, Plunder and Power, 59–101. London ; New York : Routledge, 2017. | Series: Earthscan food and agriculture series: Routledge, 2017. http://dx.doi.org/10.4324/9781315268781-4.

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Todd Campbell, B., Debbie Boykin, Zaid Abdo, and William R. Meredith. "Cotton." In Yield Gains in Major U.S. Field Crops, 13–32. Madison, WI, USA: American Society of Agronomy and Soil Science Society of America, 2015. http://dx.doi.org/10.2135/cssaspecpub33.c2.

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Chlan, C. A., K. Rajasekaran, and T. E. Cleveland. "Transgenic Cotton (Gossypium hirsutum)." In Transgenic Crops I, 283–301. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-642-59612-4_19.

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Nagrare, V. S., S. Kranthi, Rishi Kumar, B. Dharajothi, M. Amutha, and K. R. Kranthi. "Cotton." In Mealybugs and their Management in Agricultural and Horticultural crops, 271–81. New Delhi: Springer India, 2016. http://dx.doi.org/10.1007/978-81-322-2677-2_26.

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Hinze, Lori, and Russell Kohel. "Cotton." In Technological Innovations in Major World Oil Crops, Volume 1, 219–35. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0356-2_9.

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Ahmad, Aftab, Muhammad Zubair Ghouri, Amer Jamil, Sultan Habibullah Khan, Niaz Ahmad, and Mehboob-ur Rahman. "First-Generation Transgenic Cotton Crops." In Cotton Precision Breeding, 229–55. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-64504-5_10.

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Shera, P. S., Vijay Kumar, and Vikas Jindal. "Sucking Pests of Cotton." In Sucking Pests of Crops, 249–84. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6149-8_8.

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Malathi, V. G., G. Radhakrishnan, and A. Varma. "Cotton." In Virus and Virus-like Diseases of Major Crops in Developing Countries, 743–54. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-007-0791-7_29.

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Conference papers on the topic "Cotton crops"

1

Kishor, Rathod Vijaya, Khandare Pooja Shatrughan, Mukhekar Komal Balasaheb, Madake Bhagyashri Sadashiv, Vidhate Sachin, V. V. Gaike, and Malathi Seetamraju. "Agromet Expert System for Cotton and Soyabean Crops in Regional Area." In 2018 International Conference on Advances in Communication and Computing Technology (ICACCT). IEEE, 2018. http://dx.doi.org/10.1109/icacct.2018.8529664.

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Shipsheva, Z. L. "COTTON BUDWORM AND EUROPEAN CORN BORER ON CORN CROPS IN THE STEPPE ZONE OF THE KBR." In «Breeding, seed production, cultivation technology and processing of agricultural crops». Federal State Budgetary Scientific Institution Federal Scientific Rice Centre, 2021. http://dx.doi.org/10.33775/conf-2021-339-342.

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Zelensky, R. A., A. A. Pachkin, M. V. Ivanisova, and O. Yu Kremneva. "Effectiveness of LED traps for monitoring and controlling cotton bollworm in sunflower crops." In CURRENT STATE, PROBLEMS AND PROSPECTS OF THE DEVELOPMENT OF AGRARIAN SCIENCE. Federal State Budget Scientific Institution “Research Institute of Agriculture of Crimea”, 2020. http://dx.doi.org/10.33952/2542-0720-2020-5-9-10-21-1.

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Sunflower is one of the strategic crops in the Krasnodar Territory. The lack of timely monitoring, the widespread and repeated use of chemical insecticides has led to pests resistance to them. This situation creates a need for new methods of monitoring and protecting the crops from economically significant insects. The purpose of these studies was to identify the effectiveness of LED traps for monitoring and controlling Helicoverpa armigera. The paper presents a comparative analysis of captured insects using aspiration and conical traps. The dynamics of captured insects and the possibility of using these devices as a means of monitoring and reducing the number of cotton scoops are shown.
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Barbosa, William S., Adalberto I. S. Oliveira, Gustavo B. P. Barbosa, Antonio C. Leite, Karla T. Figueiredo, Marley M. B. R. Vellasco, and Wouter Caarls. "Design and Development of an Autonomous Mobile Robot for Inspection of Soy and Cotton Crops." In 2019 12th International Conference on Developments in eSystems Engineering (DeSE). IEEE, 2019. http://dx.doi.org/10.1109/dese.2019.00107.

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Vasant P Gandhi. "Brand-Variety Performance Information System for Crops in India: A Study and Design for Cotton." In 7th World Congress on Computers in Agriculture Conference Proceedings, 22-24 June 2009, Reno, Nevada. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2009. http://dx.doi.org/10.13031/2013.29101.

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Chenikalova, E. V., and V. A. Kolomytseva. "BIOLOGICAL FEATURES OF THE COTTON MOTH UNDER THE CONDITIONS OF WARMING CLIMATE." In V International Scientific Conference CONCEPTUAL AND APPLIED ASPECTS OF INVERTEBRATE SCIENTIFIC RESEARCH AND BIOLOGICAL EDUCATION. Tomsk State University Press, 2020. http://dx.doi.org/10.17223/978-5-94621-931-0-2020-44.

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The cotton bollworm is one of the most important polyphagous pests of agricultural crops with a wide range and food connections. The increase in the number of the pest, the development of additional facultative generations, the expansion of its range to the north to the forest-steppe zone of Russia, as well as the rise to the Caucasus mountains, occurring in the current period, is due to climate warming and a number of agro-ecological reasons. Measures are proposed to regulate the number of pests, aimed at preserving the biotic and floristic diversity of agricultural landscapes.
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Harders, Sara J., Kelly R. Thorp, Andrew French, and Rick Ward. "<i>Unmanned Aerial Vehicle Use in Assessing Crop Vitality and Height in Arid Land Cotton Crops</i>." In 2018 Detroit, Michigan July 29 - August 1, 2018. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2018. http://dx.doi.org/10.13031/aim.201800578.

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Shakir Hanna, Safwat H., and Michael D. Rethwisch. "Characteristics of AVIRIS bands measurements in agricultural: crops at Blythe Area, California: IV: studies on cotton varieties spectral data." In Remote Sensing, edited by Manfred Owe, Guido D'Urso, Jose F. Moreno, and Alfonso Calera. SPIE, 2004. http://dx.doi.org/10.1117/12.512387.

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Reddy, K. R., S. Koti, V. G. Kakani, D. Zhao, and W. Gao. "Genotypic variation of soybean and cotton crops in their response to UV-B radiation for vegetative growth and physiology." In Optics & Photonics 2005, edited by Germar Bernhard, James R. Slusser, Jay R. Herman, and Wei Gao. SPIE, 2005. http://dx.doi.org/10.1117/12.619899.

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Rendon, Dalila. "The role of wolf spiders (Araneae: Lycosidae) on the biological control of the bollworm, Helicoverpa(Lepidoptera: Noctuidae), in cotton crops." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.105680.

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Reports on the topic "Cotton crops"

1

Rana, Abdul Wajid, Amna Ejaz, and Sania Haider Shikoh. Cotton crop: A situational analysis of Pakistan. Washington, DC: International Food Policy Research Institute, 2020. http://dx.doi.org/10.2499/p15738coll2.133702.

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