Can winter cover crop termination practices impact weed suppression, soil moisture, and yield in no-till soybean [Glycine max (L.) Merr.]?

Rosario-Lebron, Armando; Leslie, Alan W.; Yurchak, Veronica L.; Chen, Guihua; Hooks, Cerruti R. R.

doi:10.1016/j.cropro.2018.10.020

Cited by 25 publications

(20 citation statements)

References 56 publications

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“…that cover crop biomass was one of the most important variables for predicting spring weed biomass along with cover crop type and the number of growing degree days accumulated in Pennsylvania. Rosario-Lebron et al (2019) showed that earlier terminations resulted in less residue coverage by the cover crop, resulting in higher weed densities-primarily large crabgrass, goosegrass, and white clover (Trifolium repens L.), which was similar to our results.…”

Section: Resultssupporting

confidence: 90%

Evaluating cereal rye and crimson clover for weed suppression within buffer areas in dicamba-resistant soybean

et al. 2020

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As herbicide-resistant weeds become more problematic, producers will consider the use of cover crops to suppress weeds. Weed suppression from cover crops may be especially in the label-mandated buffer areas of dicamba-resistant soybean where dicamba use is not allowed. Three cover crops terminated at three timings with three herbicide strategies were evaluated for their effect on weed suppression in dicamba-resistant soybean. Delaying termination to at soybean planting, or after, and using a cereal rye or cereal rye + crimson clover increased cover crop biomass by at least 40% compared to terminating early or using a crimson clover only cover crop. Densities of problematic weed species were evaluated in early-summer prior to a blanket POST application. Plots with cereal rye had 75% less horseweed compared to crimson clover at two of four site-years. Cereal rye or the mix cover crop terminated at, or after soybean planting reduced waterhemp densities by 87% compared to early termination timings of crimson clover and the earliest termination timing of the mix at one of two site-years. Cover crops were not as effective in reducing waterhemp densities as they were in reducing horseweed densities. This difference is due to a divergence in emergence patterns; waterhemp emergence generally peaks after termination of the cover crop while horseweed emergence coincides with establishment and rapid vegetative growth of cereal rye. Cover crops alone were generally not as effective as using a high biomass cover crop combined with herbicide strategy that contained dicamba and residual herbicides. However, within label-mandated buffer areas where dicamba cannot be used, a cover crop containing cereal rye with delayed termination to at soybean planting combined with residual herbicides could be utilized to improve suppression of horseweed and waterhemp.

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Section: Resultssupporting

confidence: 90%

Evaluating cereal rye and crimson clover for weed suppression within buffer areas in dicamba-resistant soybean

et al. 2020

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“…This herbicide is very important in different crops for weed control, but the characterization of alternative treatments is very important in the management and prevention of selection of glyphosate-resistant biotypes. As highlighted by several studies, management with alternative herbicides to glyphosate is necessary to assist in the management of herbicide resistance to weed resistance (Heap & Duke, 2018;Neve et al, 2018;Rosario-Lebron et al, 2019).…”

Section: Treatmentsmentioning

confidence: 99%

Efficacy and selectivity of alternative herbicides to glyphosate on maize

Giraldeli

Silva

et al. 2019

Rev. Ceres

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The aim was to evaluate the selectivity and weed control of herbicides atrazine, nicosulfuron, mesotrione and tembotrione, applied alone and associated, in post-emergence of maize. Were carried out two experiments, one in the field in a randomized complete block design with four replications and eleven treatments, the second in greenhouse in a completely randomized design, with four replications and ten treatments. The treatments were composed of isolated and associated herbicides. Treatments were applied V4 stage of plants. For first experiment, crop injury and control evaluations were performed, as well as variables related to agronomic performance (plant height, ear insertion height, prolificacy index, yield and mass of 1,000 grains) and mass of weeds. For second experiment, evaluations of crop injury, height, diameter and dry mass of plants were performed. The lower yield for experiment one was verified in the treatment where only mesotrione was applied, which was attributed to the lower control of monocotyledons weeds. Crop injury were observed at 21 DAA in both experiments, but not exceeding 7.5%. All treatments were considered selective to maize. The herbicides atrazine, nicosulfuron, mesotrione and tembotrione, at associations, were effective in the weed control, except the association atrazine + mesotrione.

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“…Furthermore, Florence and McGuire [122] performed a meta-analysis on 27 studies and found that mixture and monoculture cover crops perform comparably equal in seven metrics (biomass, N, weed, water, biology, yield, and stability). Time and method of cover crop termination can enhance, decrease or have no effect on weed establishment [123]. For example, Wallace et al [72] reported that delaying cover crop termination can improve weed suppression through a higher accumulation of crop biomass.…”

Section: Cover Cropsmentioning

confidence: 99%

Crop Diversification for Improved Weed Management: A Review

Sharma¹,

Shrestha²,

Kunwar³

et al. 2021

Preprint

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Weeds are among the major constraints to any crop production system, reducing productivity and profitability. Herbicides are among the most effective methods to control weeds, and reliance on herbicides for weed control has increased significantly with the advent of herbicide-resistant crops. Unfortunately, over-reliance on herbicides leads to environmental-health issues and herbicide-resistant weeds, causing human-health and ecological concerns. Crop diversification can help manage weeds sustainably in major crop production systems. It acts as an organizing principle under which technological innovations and ecological insights can be combined to manage weeds sustainably. Diversified cropping can be defined as the conscious inclusion of functional biodiversity at temporal and/or spatial levels to improve the productivity and stability of ecosystem services. Crop diversification helps to reduce weed density by negatively impacting weed seed germination and weed growth. Additionally, diversified farming systems are more resilient to climate change than monoculture systems and provide better crop yield. However, there are a few challenges to adopting a diversified cropping system, which ranges from technology innovations, government policies, farm-level decisions, climate change, and market conditions. In this review, we discuss how crop diversification supports sustainable weed management, the challenges associated with it, and the future of weed management with respect to the diversification concept.

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Can winter cover crop termination practices impact weed suppression, soil moisture, and yield in no-till soybean [Glycine max (L.) Merr.]?

Cited by 25 publications

References 56 publications

Evaluating cereal rye and crimson clover for weed suppression within buffer areas in dicamba-resistant soybean

Evaluating cereal rye and crimson clover for weed suppression within buffer areas in dicamba-resistant soybean

Efficacy and selectivity of alternative herbicides to glyphosate on maize

Crop Diversification for Improved Weed Management: A Review

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