Weed Management in Nonirrigated Glyphosate‐Resistant and Non‐Resistant Soybean following Deep and Shallow Fall Tillage

Heatherly, Larry G.; Spurlock, Stan R.; Reddy, Krishna N.

doi:10.2134/agronj2004.0742

Cited by 3 publications

(7 citation statements)

References 17 publications

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“…These results indicate that use of PRE + POST vs. POST‐only weed management is not necessary for achieving highest yields and net returns with either non‐GR or GR cultivars grown either continuously or in rotation. This agrees with the findings of Gonzini et al (1999), Nelson and Renner (1999), Roberts et al (1999), Corrigan and Harvey (2000), Payne and Oliver (2000), and Heatherly et al (2003b)(2004). This affirmation of the superior cost effectiveness of POST‐only weed management in soybean meshes well with the underlying premise of POST‐only weed management in a GR soybean production system.…”

Section: Discussionsupporting

confidence: 93%

“…Herbicides alone cannot provide adequate control of redvine and trumpetcreeper; thus, additional control tactics may be necessary by producers. Research conducted recently at the same location indicates that increased redvine presence in soybean is not associated with a yield decline (Heatherly et al, 2004).…”

Section: Resultsmentioning

confidence: 99%

“…Glyphosate‐resistant cultivars offer producers the flexibility to control a broad spectrum of weeds in soybean (Reddy, 2001b). Despite higher seed costs associated with GR cultivars, increased profits are achieved because of lowered weed control costs (Reddy et al, 1999; Roberts et al, 1999; Webster et al, 1999; Reddy and Whiting, 2000; Reddy, 2001a; Heatherly et al, 2003a, 2004). This translates to increased profits if yields from GR cultivars are equal or nearly equal to those from non‐GR cultivars (Reddy and Whiting, 2000).…”

mentioning

confidence: 99%

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Weed Management in Glyphosate‐Resistant and Non‐Glyphosate‐Resistant Soybean Grown Continuously and in Rotation

Heatherly

Reddy²,

Spurlock

2005

Agronomy Journal

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from GR cultivars are equal or nearly equal to those from non-GR cultivars (Reddy and Whiting, 2000). Re-Management inputs that maximize economic return from the search has shown that pre-emergent herbicides usually early soybean [Glycine max (L.) Merr.] production system have not been evaluated fully. Field studies were conducted near Stoneville, do not adversely affect GR soybean vs. non-GR culti-MS (33؇26 N lat.), to determine the effect of rotating maturity group vars (Gonzini et al., 1999; Nelson and Renner, 1999; (MG) IV and V glyphosate [N-(phosphonomethyl)glycine]-resistant Webster et al., 1999;Reddy, 2001a). This means that (GR) and non-GR cultivars on weed populations, soybean seed yields, residual herbicides can be used on plantings of GR and net returns from nonirrigated plantings. Eight management syscultivars to prevent early-season weed competition in tems, each containing a MG IV or MG V GR or non-GR cultivar grown situations where a timely application of glyphosate is continuously or in rotation with each other, and two weed managenot possible (Corrigan and Harvey, 2000). Glyphosate ment treatments [pre-emergent followed by postemergent weed manapplied at labeled rates does not affect GR soybean agement (PRE ϩ POST) and postemergent-only weed management growth and yield (Nelson and Renner, 1999; Reddy (POST)] were grown each year. Glyphosate-resistant cultivars using et al., 2000; Elmore et al., 2001). Timely applications of POST-only glyphosate was the most economical system each year. Maturity group effect on yield and net return resulted from weather glyphosate to sensitive weed species in GR soybean differences during reproductive development. Rotating GR and non-need no supplementation with nonglyphosate herbi-GR cultivars had no consistent effect on weed populations and no cides to achieve maximum weed control (Gonzini et al., significant effect on yield or net return in this 4-yr study. Using GR 1999; Webster et al., 1999; Corrigan and Harvey, 2000;cultivars resulted in net returns that were greater than those from Reddy and Whiting, 2000;Reddy, 2001a). All of these non-GR cultivars. These results indicate that production systems using advantages should translate to a reduction in manageeither GR or non-GR cultivars grown continuously or in rotation ment decisions for producers related to weed control in with each other in this region can be utilized effectively with no effect soybean when GR cultivars are used in the ESPS. on weed population shifts or reductions in seed yield and net return.The continued and increasing use of glyphosate in crop production is being associated with weed resistance to glyphosate (Powles et al.

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Section: Discussionsupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

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Weed Management in Glyphosate‐Resistant and Non‐Glyphosate‐Resistant Soybean Grown Continuously and in Rotation

Heatherly

Reddy²,

Spurlock

2005

Agronomy Journal

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“…Redvine is more susceptible to cooler temperatures and shorter root segments compared with trumpetcreeper (Chachalis and Reddy 2005). Redvine control in this study was higher than that reported by Heatherly et al (2004), partly because of differences in experimental conditions. Plots were deeptilled twice in this study, compared with once in the study by Heatherly et al (2004).…”

Section: Resultscontrasting

confidence: 68%

Deep Tillage and Glyphosate-Reduced Redvine (Brunnichia ovata) and Trumpetcreeper (Campsis radicans) Populations in Glyphosate-Resistant Soybean

Reddy¹

2005

Weed technol.

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Field studies were conducted during the years 2000 to 2003 at Stoneville, MS, to determine the efficacy of fall deep tillage and glyphosate applications on redvine and trumpetcreeper populations and soybean yield in glyphosate-resistant soybean. Fall deep (≈45 cm) tillage for 1, 2, and 3 yr reduced redvine density by 95, 88, and 97%, respectively, compared with shallow (≈15 cm) tillage, but deep tillage did not reduce trumpetcreeper density. Glyphosate applied preplant reduced trumpetcreeper density (25 to 44%), but not redvine density, compared to that with no glyphosate. Glyphosate early postemergence (EPOST) either alone (45 to 67%) or followed by (fb) late postemergence (LPOST; 59 to 83%) reduced density of trumpetcreeper, but not of redvine, compared to that with no herbicide. However, dry biomass of both vines was reduced with glyphosate EPOST or LPOST compared to that with no herbicide. Soybean yields were higher with deep tillage vs. shallow tillage, glyphosate preplant application vs. no glyphosate, and glyphosate EPOST either alone or fb LPOST vs. no herbicide. Redvine did not reestablish in 2003, which was after skipping fall deep tillage for 1 yr following three consecutive years of deep tillage compared with shallow tillage. It is possible to manage redvine infestations with fall deep tillage and trumpetcreeper infestations with glyphosate preplant and postemergence (POST) in-crop applications. Integration of fall deep tillage and glyphosate POST applications could be an effective strategy to manage combined infestations of these vines in glyphosate-resistant soybean.

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“…One of the main problems with the refusal of conventional moldboard plowing is increasing the growth of weeds what, without any appropriate additional measures, leads to a decrease in the yield of cultivated plants [11]. Although deep tillage of 30 cm alone, with the same yield as compared with basic surface tillage, was ineffective against perennial weeds [12]. As for evaluation of the economic component of tillage methods, some authors say that minimal and zero tillage providing an average yield increase by 18% give lower average annual net income due to high costs of agricultural equipment and herbicides compared to conventional tillage [13].…”

Section: Introductionmentioning

confidence: 99%

Fall tillage of eroded sod-podzolic soil

Lentochkin¹,

Babaytseva²,

Ukhov³

2019

Proceedings of the International Scientific and Practical Conference “Digital Agriculture - Development Strategy” (ISPC 2019)

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Implementation of modern technologies for the production of agricultural products in each soil and climatic zone which are based on efficient resource-saving methods of tillage will make a significant contribution to the Federal Scientific and Technical Program for the Development of Agriculture of the Russian Federation. The Cis-Ural region is a large industrial center with well-developed agricultural industry. Sod-podzolic soils predominantly spread on this territory are characterized by erosional features, lowhumusness and weak aggregate strength but with good water provision during growth period one can get good levels of crop yields. Results of this study showed that the various methods of fall tillage of sod-podzolic soil actually do not change its agrophysical properties during the subsequent growth season, the yield of spring wheat and weed infestation of its crops. Therefore, it is economically reasonable to use minimal tillage for growing spring wheat.

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Weed Management in Nonirrigated Glyphosate‐Resistant and Non‐Resistant Soybean following Deep and Shallow Fall Tillage

Cited by 3 publications

References 17 publications

Weed Management in Glyphosate‐Resistant and Non‐Glyphosate‐Resistant Soybean Grown Continuously and in Rotation

Weed Management in Glyphosate‐Resistant and Non‐Glyphosate‐Resistant Soybean Grown Continuously and in Rotation

Deep Tillage and Glyphosate-Reduced Redvine (Brunnichia ovata) and Trumpetcreeper (Campsis radicans) Populations in Glyphosate-Resistant Soybean

Fall tillage of eroded sod-podzolic soil

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