Download or read book Evaluation of Cultural Weed Control Methods in Soybean Glycine Max to Improve Crop Competitiveness written by Tasha Valente and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Effects of cultural weed control methods in soybean were examined under moderate and high weed populations for their effect on crop canopy closure and canopy closure. The reference treatment was a slender soybean cultivar planted at a standard seeding rate (400,000 seeds/ha) with no pre-plant nitrogen added. Field studies were conducted in Elora, Ontario and Woodstock, Ontario in 2014 and 2015. Treatments included two levels of each: pre-plant nitrogen, seeding rate, competitive cultivar selection, and weed pressure. Weed emergence, above ground weed biomass, canopy light transmittance, and soybean yield were measured. Weeds continued to emerge until canopy closure regardless of treatment; there was also little difference in canopy closure between treatments. Nitrogen treatment alone (P=0.0214) and in combination with the bushy soybean cultivar (P=
Download or read book Crop Weed Competition in Soybean Glycine Max L Mirrill Crop in Relation to Chemical and Mechanical Methods of Weed Control written by Surjit Singh Dahiya and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Efficacy of Herbicides for Weed Management in Soybean Glycine Max L written by Sylvestre Habimana and published by LAP Lambert Academic Publishing. This book was released on 2014-02 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food Security used to be the prime concern up to 1960s and now emphasis is on sustainable crop production. The agronomic constraints of growing and handling of soybean could be minimized by appropriate mechanical aids for sowing, intercultivation, weed control, harvesting and threshing. Among the constraints, weed infestation in soybean is one of the major hurdles which limit its productivity level. Depending on the type of weeds, their intensity and time of crop weed competition reduces the yields to the extent of 20 to 50 per cent when weeds are grown with crop for long season. The traditional methods of weed control by hand weeding or mechanical means are now becoming costly, tedious, labor intensive and time consuming. Unavailability of sufficient labor at critical stage of crop growth for hand weeding.Under these circumstances, it is inevitable to adopt alternate measures which help to control weeds early in the season and also at critical periods of crop weed competition.The only choice for controlling weeds would be through herbicides at appropriate level.The Author is optimistic that the present book will be well received across soybean growers and researchers in the world
Download or read book Weed control evaluations in no till soybeans Glycine max double cropped with rye Secale cereale written by Philip A. Banks and published by . This book was released on 1983 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soybean glycine Max Cultivar as a Factor of Weed Control in No till Double cropped Production Following Wheat triticum Aestivum written by Drew Trussell Newcomer and published by . This book was released on 1986 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Herbicides for Soybeans on Central Florida Organic Soils Classic Reprint written by Walter T. Scudder and published by Forgotten Books. This book was released on 2018-01-12 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Evaluation of Herbicides for Soybeans on Central Florida Organic Soils The problem of controlling weeds has been a major factor prohibiting large-scale production Of soybeans on the sawgrass peat soils Of Central Florida. With adequate weed control, good yields can be produced on these soils when planted after early sweet corn or other spring vegetable crops. Soybeans are grown during the summer, at aptime when the land is normally fallowed or left to weeds. They show promise Of becoming an important self-paying summer cover crop When used as part of the veg etable rotation. A weed-free crop Of soybeans Offers many advantages as a summer cover. Fallowing, by plowing and harrowing repeatedly throughout this Off-season, controls the weeds, but is expensive and tends to increase subsidence - a serious problem on peat soils. Although a cover crop Of weeds lessens subsidence and conserves soil nutrients remaining from the fertilized truck crops, millions Of wee-d seed are borne to hamper production for years to come. A well-cared-for crop Of soybeans, on the other hand, not only conserves residual fertility but also adds nitrogen to the soil. In addition, a good bean yield will give a cash return much above the cost of production. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Field Greenhouse and Laboratory Evaluation of the Efficacy and Selectivity of the Herbicide Thifensulfuron for Weed Control in Soybeans Glycine Max written by Lewis Meriwether Walker and published by . This book was released on 1991 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Grass Control in Soybeans Glycine Max L Merr with Selective Postemergence Herbicides written by James Justin Kells and published by . This book was released on 1982 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Tillage and Weed Control on Soybean Glycine Max L Merr Production written by Charles Lee Webber and published by . This book was released on 1986 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparison of Roundup Ready and Conventional Soybean glycine Max L Weed Control Systems for Optimizing Yield and Economic Profitability written by Brittany Lee Gaban and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research was conducted in 2010, 2011 and 2012 at the East Tennessee Research and Education Center in Knoxville, TN, in order to compare differences in soybean yield among differing levels of weed control within Roundup Ready® [Glyphosate-resistant] (RR)and conventional soybean cultivars to gain a better understanding of the impact different intensities of weed control have on RR and conventional cropping systems. Results determined that after applying the weed control regimens, there was no significant difference (p Glyphosate resistant weeds introduce new challenges and create a more costly weed control regimen, especially when using a RR based soybean cultivation operation. Therefore, calculated economic returns of RR and conventional weed management technologies used in this study were contrasted to determine profitability of each system. In a glyphosate resistant-free environment, the conventional soybean cultivar had a net return of only 0.4% greater than that of the RR cultivar. The comparison of cultivar net return and yield indicates conventional soybean production is competitive to RR productions, however the tremendous use of RR technologies leaves conventional crops vulnerable to potential damage or death due to drift. If glyphosate resistant weeds are present in an environment, RR production and hand hoeing may be the best choice for weed control.
Download or read book Integrated Weed Control in Soybean Glycine Max L Merrill written by KAMALA BAI S and published by . This book was released on 1993 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Weed Control in Soybean Glycine Max L Merrill Through Herbicides in Comparison with Intercropping and Mechanical Methods written by SHEKARA B. G and published by . This book was released on 1991 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluating Cultural Weed Management Techniques in Soybean in Manitoba written by Jonathan DDJ. Rosset and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soybean's popularity as a rotational crop has increased in Manitoba and the Canadian Prairies due to its nitrogen-fixing capabilities and development of short-season cultivars genetically engineered to resist glyphosate. Appropriately designed cultural weed management techniques help mitigate the development of glyphosate resistant weed biotypes caused by excessive glyphosate applications. The cultural weed management techniques of row spacing, target density, and cultivar were evaluated to determine their effects on the critical weed free period in soybean and provide a framework for future regional recommendations. Three field experiments were implemented during the summers of 2016 and 2017 at three locations in southern Manitoba to examine the effects of (1) two row spacings, (2) three target densities, and (3) three soybean cultivars on the critical weed free period in soybean (chapter 3) and the structure of the associated resident weed community (chapter 4). Narrow row soybean shortened the critical weed free period by up to three development stages compared to wide rows. Soybean grown at a target density of 333,000 plants ha-1 lengthened the critical weed free period by up to two development stages compared to soybean grown at 666,000 plants ha-1. The effect of soybean cultivar was location dependent, however the cultivar with the shortest maturity and stature generally had the longest critical weed free period. A total of fourteen weed species were identified among field experiments, eight or less weed species occurred at individual site-years and these were dominated by fewer than three species. The structure and trajectories of the weed communities was affected overwhelmingly by the duration of the soybean weed free period. Soybean row spacing and target densities affected the trajectories of the weed community at the untreated and initial herbicide application stages. Further herbicide applications fully obscured the effects of the cultural techniques. Soybean cultivar did not influence the weed community. This research showed that soybean competitive ability can be improved by implementing specific cultural techniques that reduce the duration of time the crop must be kept weed free to minimize yield loss. Specific cultural techniques were also shown to influence the structure of the weed community.
Download or read book Factors Influencing Weed Control Potential of Cloransulam in Soybean Glycine Max written by Jeffery Wayne Barnes and published by . This book was released on 2003 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Small Grain Cover Crops as Alternative Methods of Weed Control in Soybeans written by Brad A. Miller and published by . This book was released on 1996 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Expanding the Context of Weed Management written by Douglas Buhler and published by CRC Press. This book was released on 2020-07-26 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents innovative approaches to weeds and weed management. Expanding the Context of Weed Management is your key to the latest economically and environmentally friendly methods of managing weeds. You will explore the biological, cultural, mechanical, and preventive tools and techniques that are necessary to successfully manage weeds. Expanding the Context of Weed Management teaches you how to optimize your crop production and profit by integrating preventive techniques, scientific knowledge, and management skills into your current farming routine. This practical volume contains a series of review articles and original research that present innovative approaches to weeds and weed management. In its pages you will discover valuable and practical information about: how weeds can be considered a part of the cropping system instead of an isolated pest to beeliminated why weeds behave as they do short and long term approaches to changing weed management standard breeding methods for weed competitive crops how to improve soil quality to manage weeds how to integrate pest management for weeds how to avoid propagule production how to reduce weed emergence in crops how to minimize weed competition with the cropThe costliness of weeds and weed control is more than $15 billion a year in the United States.Expanding the Context of Weed Management will help you cut this cost with the latest methods of effective weed control. Intended for agronomists, weed scientists, crop advisors, environmentalists, students, and crop ecologists,this book provides a successful and environmentally sound perspective on weeds and their control.
Download or read book Integrated Weed Management and Herbicide Application Parameters for Herbicide resistant Soybean in Kansas written by Chad Joseph Lammers and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrated weed management and herbicide application practices were assessed in field and greenhouse studies to improve weed control in herbicide-resistant soybeans (Glycine max (L.) Merr.) grown in Kansas. The field study was conducted to evaluate weed control, soybean yield, and profitability in two herbicide-resistant soybean systems and two row spacings. 2,4-D-, glyphosate-, and glufosinate- resistant (Enlist E3) and isoxaflutole-, glyphosate-, and glufosinate- resistant (LLGT27) soybeans were planted in 38- and 76-cm row spacing for four site-years. Three herbicide treatments were evaluated in each system: pre-emergence herbicide only (PRE), PRE followed by early post-emergence (POST), and POST plus overlapping residual (POR). Weed control was evaluated every 2 weeks after PRE application through R7 soybean. Weed biomass was collected before POST applications and at R7 soybean. Soybean yield was recorded at harvest. Data were subjected to analysis of variance and means separation. In Ottawa during 2020, POST and POR treatments resulted in ≥ 99% control for all species four WAT, while PRE resulted in ≥ 84% control. Similarly, control at Ashland Bottoms was ≥ 90% for POST and POR treatments, while PRE resulted in 7% for isoxaflutole- 62% for 2,4-D-resistant soybeans. All treatments resulted in ≥ 95% control at Scandia in 2021. Row spacing had a minimal effect on weed control and mixed results for yield. In the greenhouse study, the objective was to determine the effect of herbicide combination, optimize carrier volume, and evaluate weed height on weed control. Co-applications of combinations of 2,4-D choline, glyphosate, and glufosinate were applied in carrier volumes of 93-, 140-, and 187- L ha−1to 5-, 10-, and 20-cm Palmer amaranth (Amaranthus palmeri S. Watson) and large crabgrass (Digitaria sanguinalis L.). Visual ratings and above ground biomass were collected four weeks after treatment. Water-sensitive paper was also sprayed with the same herbicide combinations and carrier volumes to evaluate differences in spray coverage. Data were subjected to analysis of variance and means separation. Carrier volume did not affect Palmer amaranth or large crabgrass control. Control of 5-, 10-, and 20-cm Palmer amaranth was 100%, ≥ 91%, and 6.7 to 79%, respectively, and variation was caused by the herbicide combinations. 2,4-D plus glyphosate provided the greatest Palmer amaranth control. Large crabgrass control pooled for both experiments was ≥ 82% when treatments were applied at 5 cm, but control of 10- or 20-cm large crabgrass was reduced to 51 to 56%. There was a carrier volume by herbicide co-application interaction for the number of droplets deposited and percent area covered on water-sensitive paper. Co-applications containing glufosinate had more droplets than those not containing glufosinate. 2,4-D plus glyphosate had the smallest percent area covered, compared to the other herbicide co-applications. Data from the field study confirms that two-pass herbicide programs are superior to PRE- only programs, regardless of the inclusion of a layered residual herbicide. However, this research did not evaluate the impact of layered residual herbicides on weed seed production, which is crucial for long-term weed management. Results from the greenhouse study suggest that under ideal conditions, carrier volume is less important than herbicide combination and weed size for control of Palmer amaranth and large crabgrass.
