Download or read book Improving the Level and Consistency of Glyphosate Resistant Canada Fleabane Erigeron Canadensis L Control in Soybean Glycine Max L Merr with Preplant Herbicides written by Meghan Dilliott and published by . This book was released on 2022 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Six studies consisting of twenty four field experiments were conducted in 2020 and 2021 in Ontario, Canada to investigate how to improve the level and consistency of glyphosate-resistant (GR) Canada fleabane control with herbicides applied preplant (PP) to soybean. Study One concluded the adding saflufenacil or metribuzin to glyphosate plus halauxifen-methyl or pyraflufen-ethyl/2,4-D resulted in a synergistic increase in GR Canada fleabane control and improved the consistency of control. Study Two and Three determined adding dicamba or saflufenacil to glyphosate plus bromoxynil and adding saflufenacil to glyphosate plus dicamba improved the level and consistency of GR Canada fleabane control. Study Four determined adding metribuzin to glyphosate plus glufosinate provided the greatest level of GR Canada fleabane control and improved the consistency of control. Study Five and Six determined there was no benefit of adding low rates of protoporphyrinogen oxidase (PPO)-inhibiting herbicides to glufosinate to improve GR Canada fleabane control.
Download or read book Improving the Consistency of Glyphosate resistant Canada Fleabane Conyza Canadensis Control with Saflufenacil written by Christopher Murray Budd and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2010, glyphosate-resistant (GR) biotypes of Canada fleabane were first confirmed in Essex County, Ontario. From surveys conducted in 2010 to 2015, inclusive, GR Canada fleabane has now been confirmed in 30 counties and multiple-resistant biotypes (glyphosate and cloransulam-methyl) in 22 counties. Saflufenacil was recommended for GR Canada fleabane control in soybean, however variable control had been reported. The biologically effective rate (BER) of saflufenacil is 25 g a.i. ha-1 for 90% control eight weeks after application (WAA). At 8 WAA, the BER of metribuzin when tankmixed with glyphosate (900 g a.i. ha-1) plus saflufenacil (25 g a.i. ha-1) was 61, 261, and 572 g a.i. ha-1 for 90, 95 and 98% control, respectively. Tankmix partners with glyphosate (900 g a.i. ha-1) plus saflufenacil (25 g a.i. ha-1) were investigated, and the best three-way tankmixes were with either 2,4-D or metribuzin for full season control of multiple-resistant Canada fleabane. The optimal time of day (TOD) for controlling GR Canada fleabane with glyphosate (900 g a.i. ha-1) plus saflufenacil (25 g a.i. ha-1) was 09:00-21:00 h. GR Canada fleabane height and density were found to have a minimal effect on control with glyphosate (900 g a.i. ha-1) plus saflufenacil (25 g a.i. ha-1).
Download or read book Glyphosate resistant Canada Fleabane Conyza Canadensis L Cronq in Ontario written by Holly P. Byker and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Canada fleabane is the second glyphosate-resistant (GR) weed species to be confirmed in Ontario. In 2010, GR populations were identified at eight sites in Essex County. In 2011 and 2012, 147 additional sites across eight counties were confirmed to be resistant. Twelve and seven sites were identified with multiple resistance (glyphosate and cloransulam) in 2011 and 2012, respectively, across five counties. In soybeans, preplant tankmixes of glyphosate (900 g a.e.ha-1) plus saflufenacil (25 g a.i. ha-1), saflufenacil/dimethenamid-p (245 g a.i. ha-1), metribuzin (1120 g a.i. ha-1), or flumetsulam (70 g a.i. ha-1) provided greater than 87% up to 8 weeks after application (WAA). Glyphosate rates 21 to 48X the label rate (900 g a.e. ha-1) were required for 95% control. Postemergence tankmixes did not provide acceptable control. In dicamba-tolerant soybean, dicamba applied preplant at 600 g a.e. ha-1 provided the most consistent control of GR Canada fleabane.
Download or read book Control of Glyphosate Resistant Canada Fleabane Conyza Canadensis and Waterhemp Amaranthus Tuberculatus Var Rudis in Glyphosate Dicamba Resistant Soybean Glycine Max written by Brittany Hedges and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Field studies were conducted in Ontario, Canada on the control of glyphosate-resistant (GR) Canada fleabane and waterhemp in 2016 and 2017. Glyphosate/dicamba was applied to Canada fleabane at 3 postemergent (POST) application timings (5, 15 and 25 cm) and 4 herbicide rates (0, 900, 1350 and 1800 g ae ha-1). An increase in plant height at the application timing, led to a decrease in control of Canada fleabane; an increase in herbicide rate led to an increase in efficacy. There was an interaction between application timing and rate for density and biomass only. This same study was conducted with GR waterhemp, the same trend followed except there was no interaction between application timing and herbicide rate. Control of GR Canada fleabane with several preplant herbicide tankmixes was evaluated; there was no increase in control with the addition of a second-effective site-of-action. Similarly, GR waterhemp control did not increase with the addition of a second-effective mode-of-action. Acceptable control was not obtained with glyphosate/dicamba applied pre-emergent (PRE), therefore, another mode-of-action is needed for effective control of GR waterhemp. A two-pass program of an effective PRE herbicide followed by glyphosate/dicamba provided season-long control of GR waterhemp and was more efficacious than a PRE or POST program alone.
Download or read book Evaluation of Halauxifen methyl for the Control of Glyphosate Resistant Canada Fleabane Conyza Canadensis L Cronq and Giant Ragweed Ambrosia Trifida L in Winter Wheat and Soybean written by Jessica E. Quinn and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The new herbicide halauxifen-methyl was evaluated for the control of glyphosate-resistant (GR) Canada fleabane and giant ragweed in winter wheat and soybean, and the tolerance of corn and soybean to halauxifen-methyl. Halauxifen-methyl applied alone or in a tankmix controlled GR Canada fleabane in winter wheat, while a tankmix partner was required to provide control in soybean. Halauxifen-methyl applied alone did not control GR giant ragweed in winter wheat or soybean, however, when applied in a tankmix, control was achieved. Halauxifen-methyl applied preplant and pre-emergence at 5 g ai ha-1 and 10 g ai ha-1 was safe in corn however yield was reduced when applied early postemergence at the 10 g ai ha-1 rate. Soybean was extremely sensitive to halauxifen-methyl applied early postemergence at both rates, however minimal injury was observed when either rate was applied preplant and pre-emergence. Halauxifen-methyl could provide an effective solution for the control of GR weeds in corn, soybean and winter wheat.
Download or read book Control of Glyphosate Resistant Canada Fleabane Conyza Canadensis L Cronquist with 2 4 D Choline Glyphosate DMA in Corn Zea Mays L written by Laura Ford and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution and Control of Glyphosate resistant Common Ragweed Ambrosia Artemisiifolia L in Ontario Soybeans Glycine Max L Merr written by Annemarie Van Wely and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Economics of Glyphosate Resistance Management in Corn and Soybean Production written by Michael J. Livingston and published by . This book was released on 2015 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glyphosate, known by many trade names, including Roundup, is a highly effective herbicide. Widespread glyphosate use for corn and soybean has led to glyphosate resistance, which is now documented in 14 weed species affecting U.S. cropland, and recent surveys suggest that acreage with glyphosate-resistant (GR) weeds is expanding. Data from USDA's Agricultural Resource Management Survey (ARMS), along with the Benchmark Study (conducted independently by plant scientists), are used to address several issues raised by the spread of GR weeds. Choices made by growers that could help manage glyphosate resistance include using glyphosate during fewer years, combining it with one or more alternative herbicides, and, most importantly, not applying glyphosate during consecutive growing seasons. As a result, managing glyphosate resistance is more cost effective than ignoring it, and after about 2 years, the cumulative impact of the returns received is higher when managing instead of ignoring resistance.
Download or read book Recent Advances in Weed Management written by Bhagirath S. Chauhan and published by Springer. This book was released on 2014-07-10 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume addresses recent developments in weed science. These developments include conservation agriculture and conservation tillage, climate change, environmental concerns about the runoff of agrochemicals, resistance of weeds and crops to herbicides, and the need for a vastly improved understanding of weed ecology and herbicide use. The book provides details on harnessing knowledge of weed ecology to improve weed management in different crops and presents information on opportunities in weed management in different crops. Current management practices are also covered, along with guidance for selecting herbicides and using them effectively. Written by experts in the field and supplemented with instructive illustrations and tables, Recent Advances in Weed Management is an essential reference for agricultural specialists and researchers, government agents, extension specialists, and professionals throughout the agrochemical industry, as well as a foundation for advanced students taking courses in weed science.
Download or read book Cotton Production written by Khawar Jabran and published by John Wiley & Sons. This book was released on 2019-08-05 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive overview of the role of cotton in the economy and cotton production around the world This book offers a complete look at the world’s largest fiber crop: cotton. It examines its effect on the global economy—its uses and products, harvesting and processing, as well as the major challenges and their solutions, recent trends, and modern technologies involved in worldwide production of cotton. Cotton Production presents recent developments achieved by major cotton producing regions around the world, including China, India, USA, Pakistan, Turkey and Europe, South America, Central Asia, and Australia. In addition to origin and history, it discusses the recent advances in management practices, as well as the agronomic challenges and the solutions in the major cotton producing areas of the world. Keeping a focus on global context, the book provides sufficient details regarding the management of cotton crops. These details are not limited to the choice of cultivar, soil management, fertilizer and water management, pest control, cotton harvesting, and processing. The first book to cover all aspects of cotton production in a global context Details the role of cotton in the economy, the uses and products of cotton, and its harvesting and processing Discusses the current state of cotton management practices and issues within and around the world’s cotton producing areas Provides insight into the ways to improve cotton productivity in order to keep pace with the growing needs of an increasing population Cotton Production is an essential book for students taking courses in agronomy and cropping systems as well as a reference for agricultural advisors, extension specialists, and professionals throughout the industry.
Download or read book Ecological Management of Agricultural Weeds written by Matt Liebman and published by Cambridge University Press. This book was released on 2001-07-19 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents principles and practices for ecologically based weed management in a wide range of temperate and tropical farming systems. Special attention is given to the evolutionary challenges that weeds pose and the roles that farmers can play in the development of new weed-management strategies.
Download or read book Direct Seeding of Rice and Weed Management in the Irrigated Rice wheat Cropping System of the Indo Gangetic Plains written by Y. Singh and published by Int. Rice Res. Inst.. This book was released on 2008 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Allelopathy in Rice written by M. Olofsdotter and published by Int. Rice Res. Inst.. This book was released on 1998 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Allelopathy in rice; Allelopathic activity in rice for controlling major aquatic weeds; Weed management using allelopathic rice varieties in Egypt; Rice allelopathy research in Korea; Using and improving laboratory bioassays in rice allelopathy research; Incorporating the allelopathy trait in upland rice breeding programs; What are allelochemicals?; Searching for allelochemicals in rice that control ducksalad; Adaptive autointoxication mechanisms in rice; Allelopathic strategies for weed management in the rice-wheat rotation in northwestern India; Allelopathic effect of Lantana camara on rice and associated weeds under the midhill conditions of Himachal Pradesh, India; Potential of allelopathy for weed management in wet-seede rice cultivation in Sri Lanka; Allelopathic effects of gooseweed extracts on growth of weed seedlings.
Download or read book Weed Management in Rice written by Bruce Archibald Auld and published by Food & Agriculture Org.. This book was released on 1996 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crop Improvement for Sustainable Agriculture written by Mitchell Brett Callaway and published by U of Nebraska Press. This book was released on 1993-01-01 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crop improvement for future farming systems. History of crop improvement in sustainable agriculture. Choosing germplasm for breeding program success. The role of seed companies in crop improvement. Crop breeding objectives and methods. Breeding for resistance to insects and plant pathogens. Crop tolerance to weeds. Tree improvement for agroforestry systems. Contributions of biotechnology to crop improvement. Genotype by environment interaction in crop improvement. Statistical design and analysis of intercropping experiments.
Download or read book Recent Advances in Agronomy written by Harry Abbott and published by States Academic Press. This book was released on 2021-11-16 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: The science and technology of producing and using plants for food, fiber, fuel and land reclamation is called agronomy. It integrates the principles of soil science, plant genetics, plant physiology and meteorology. Plant breeding is an important tool of agronomy. The selective breeding of plants has resulted in the production of crops with enhanced yields and nutritional value. This has been observed in major crops such as wheat, corn and soybeans. There has also been a significant use of biotechnology to extend and expedite the development of crop varieties with desired traits. Modern agronomy also focuses on soil analysis to determine the soil that is most conducive to plant growth. These analyses aid in balancing soil nutrients for optimum results. The ever growing need of advanced agricultural technology is the reason that has fueled the research in the field of agronomy in recent times. This book is a compilation of chapters that discuss the most vital concepts and emerging trends in agronomy. Coherent flow of topics, student-friendly language and extensive use of examples make it an invaluable source of knowledge.
