Download or read book Herbicide Applications in Tillered Winter Wheat for Doublecrop Soybean Weed Control written by Martha J. McHarry and published by . This book was released on 1979 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Plant Cutting and Burndown Herbicides on Weed Management in Double crop Soybeans Following Winter Wheat written by Colton P. Carmody and published by . This book was released on 2021 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: The agricultural practice of 'double-cropping,' harvesting two crops from the same piece of land in a single growing season, is a popular practice in Southern Illinois where growers often plant soybeans (Glycine max (L.) Merr.) soon after winter wheat (Triticum aestivum L.) harvest. Horseweed (Conyza canadensis L. Cronq.) competition and lack of control can cause detrimental effects on yield for double-crop producers in Illinois due to the development of multiple herbicide resistance in this weed species. To combat this problem of herbicide resistance, new herbicide-tolerant soybean technologies and new herbicide formulations have been developed, but these technologies will quickly lose efficacy unless stewarded properly. Therefore, our objective for this study was to evaluate the control of horseweed and other weeds and crop yield as influenced by weed-cutting height, herbicide treatments, timing of herbicide application in three studies (a greenhouse study and in-crop and non-crop field studies) with the goal of improving weed management in double-crop soybean. Data obtained from the non-crop study that focused on the evaluation of different cutting heights, herbicide treatments and application timings was observed to be significantly different by weed species evaluated: horseweed, common ragweed (Ambrosia artemisiifolia L.), and Canada goldenrod (Solidago canadensis L.). Horseweed control and biomass accumulation was observed to be strongly influenced by cutting height, where cutting to 15 cm resulted in the greatest control efficacy and reduction in overall biomass irrespective of herbicide treatment used. While application timing following cutting in relation to control efficacy and biomass accumulation was only observed to be significant based upon the translocation properties of the herbicide applied, i.e. contact or systemic. Differences in the perennial weed species Canada goldenrod were observed compared to horseweed; cutting in combination with herbicide treatments resulted in a decrease in control compared to herbicide applications made to noncut Canada goldenrod plants. Data obtained in this study suggest that cutting in combination with the use of effective burndown herbicides may lead to increased control of certain weed species and could be a component of herbicide technology stewardship in double-crop soybeans. The in-crop study focused on evaluating yield potential of burndown herbicides in double-crop soybean systems. Observations from this study revealed that similarly to full-season beans, yield in double-crop soybeans was limited dependent upon the burndown herbicide programs ability to achieve broad-spectrum weed control. When effective burndown herbicides dicamba, glufosinate, and paraquat were combined with herbicides that possessed the ability to provide soil residual activity, such as saflufenacil, chlorimuron, chloransulam, metribuzin, sulfentrazone or flumioxazin, yield potential was maximized compared to these active ingredients applied as standalone treatments. Data from this study further stresses the importance of utilizing multiple effective sites of actions to achieve higher yields while maintaining good herbicide stewardship practices.
Download or read book Effects of Selected Herbicides on Treated and Rotational Crops written by S. Fausto Venegas and published by INIAP Archivo Historico. This book was released on 1980 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Herbicides in No tillage Systems Involving Wheat written by Allen F. Wiese and published by . This book was released on 1984 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Weed Control Population Density Change and Herbicide Persistence in Soils in No tillage and Conventional Tillage Soybean wheat Double Cropping Systems written by Fitzroy Dennis Bullock and published by . This book was released on 1980 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Weed Control for Corn Soybeans and Sorghum written by M. D. McGlamery and published by . This book was released on 1989 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Target and Non target Effects of Herbicides written by Aaron J. Hoskins and published by . This book was released on 2002 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enhancement of Postemergence Herbicide Applications in Soybeans with Phytobland Oils written by Alvin Hugh Dempsey and published by . This book was released on 1969 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Herbicide Use in Double Cropping Soybean Tillage Systems written by Carl Michael French and published by . This book was released on 1978 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Glyphosate in No till Double Crop Soybeans Using Varying Volumes and Pressures written by Charles Brent Rogers and published by . This book was released on 1976 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Herbicides and Nutrient Management on Productivity of Soybean Merrill and their Residual Effect on Succeeding Wheat written by Dr. Jai Prakash Bhimwal and published by GRIN Verlag. This book was released on 2018-09-13 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doctoral Thesis / Dissertation from the year 2018 in the subject Agrarian Studies, , language: English, abstract: In the recent past, India has made an impressive progress in achieving self sufficiency in food grains. However, efforts to increase the production of oilseeds have not brought any perceptible change in per capita availability of oil to predominantly vegetarian population of our country. The domestic demand for vegetable oils and fats has also been rising rapidly at an increasing rate due to increase in per capita income and increase standard. The present per capita annual consumption of edible oil is 14.4 kg and in 2030 it will likely to be 19.1 kg. India will continue to depend on imports of edible oils even in the coming decades. The domestic production of edible oils is projected to be about 12 million tonnes by 2020 and 19 million tonnes by 2030. These facts clearly emphasize urgent need to achieve substantial and sustained growth in production of oilseeds.
Download or read book Evaluation of Chlorsulfuron for Weed Control in Winter Wheat Triticum Aestivum L and Its Effect on Subsequent Recropping with Soybeans Glycine Max L Merr Or Grain Sorghum Sorghum Bicolor L Moench written by Michael Scott Leetch and published by . This book was released on 1985 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integrating Cover Crops in No till Corn and Soybean to Diversify Herbicide Resistant Weed Management in the Mid Atlantic written by Jess Marie Bunchek and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Widespread adoption of genetically-engineered, herbicide-resistant (HR) crops have simplified crop rotation diversity and the use of single-tactic, herbicide-based weed management programs. These practices have resulted in an HR weed epidemic, where glyphosate-resistant weeds are especially problematic. Glyphosate-resistant weeds like horseweed [Conyza canadensis (L.)] and pigweeds (Amaranthus spp.) threaten grower productivity and long-term efficacy of common agronomic herbicides. Thus, integrated weed management (IWM) programs that implement both ecological- and herbicide-based tactics are needed in no-till annual grain systems to (1) manage current HR weeds, (2) reduce HR selection pressure for evolution of resistance to other herbicides, (3) preserve effective herbicide technology, (4) enhance environmental stewardship, (5) safeguard soil conservation gains, and (6) maintain farm profits and productivity. To address these goals, we established three field studies at two sites in the Mid-Atlantic and identified combinations of cover crop and herbicide tactics that achieve effective season-long annual weed management, minimize HR selection pressure, and increase sustainability by reducing herbicide inputs. The first two studies assessed the complementarity of cover crops treatments and herbicide programs in corn and soybean, where integrating a cover crop treatment combined with applying a spring, pre-plant burndown herbicide application as well as a POST-emergent application provided the most effective season-long annual weed control. The third study assessed cover crop treatments and varied management practices, such as planting and termination dates, on HR selection pressure reduction at the time of herbicide applications. While cover crops intercepted a portion of the burndown herbicide application from reaching the soil surface, weeds were effectively controlled by the cover crops before the application, thus reducing the HR selection pressure.
Download or read book Mitigating Herbicide Impacts to Soybean written by Grant Lawson Priess and published by . This book was released on 2019 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapidity in evolution of herbicide-resistant weeds and the resulting cost to U.S. farmers demonstrate the need to responsibly steward the limited number of herbicides available in agricultural systems. To reduce weed emergence and likewise added selection pressures placed on herbicides, early-season crop canopy formation has been promoted. However, impacts to soybean following a potentially injurious herbicide application have not been thoroughly evaluated. Therefore, field experiments were conducted to determine whether: 1) soybean injury from metribuzin or flumioxazin delayed canopy formation or changed the incidence of pathogen colonization; 2) residual herbicides applied preplant reduced the potential for soybean injury and achieved the same longevity of weed control as herbicides applied at planting; 3) POST-applied acetolactate synthase (ALS)- and protoporphyrinogen oxidase (PPO)-inhibiting herbicides alone and in combination with glufosinate delayed canopy formation or impacted grain yield. Few interactions between herbicides and soil-borne pathogens were observed. Results from various experiments showed that soybean canopy formation was delayed after an application of preemergence (PRE)-residual herbicides and postemergence (POST)-foliar-active herbicides. However, delays in crop canopy formation caused by a PRE application of metribuzin and flumioxazin were only observed in varieties with sensitivity to the herbicide. Soybean injury caused by PRE applications were mitigated by applying herbicides 14 days prior to planting. Treatments that were applied 14 days prior to planting and contained an effective herbicide with a half-life greater than 70 days suffered no reduction in longevity of Palmer amaranth control when compared to the same herbicide applied at planting. POST-applied herbicides delayed soybean canopy formation relative to the amount of injury present following application. Delays in canopy formation can result in a lengthened period of weed emergence, subsequently increasing the need for additional weed control and increasing selection pressure on sequentially applied herbicides. Nomenclature: Flumioxazin, glufosinate, metribuzin, Palmer amaranth, Amaranthus palmeri (S.) Wats., soybean Glycine max (L.) Merr. Key words: Acetolactate synthase (ALS)-inhibiting herbicides, canopy formation, half-life, herbicide-resistance weeds, POST foliar-active herbicide, preplant, protoporphyrinogen oxidase (PPO)-inhibiting herbicides, PRE-residual herbicide, soil-borne pathogen, soybean injury.
Download or read book Improving Kentucky s Winter Wheat and Double Crop Soybean Rotation written by Katherine Susan Rod and published by . This book was released on 2020 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Herbicides in Winter Wheat of Early Growth Stages Enhance Crop Productivity written by Vytautas Pilipavičius and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
