Evaluation of Weed Control Strategies in Organic Soybean Production

Kluchinski, Daniel; Singer, Jeremy W.

doi:10.1094/cm-2005-0614-01-rs

Cited by 7 publications

(8 citation statements)

References 9 publications

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“…However, the use of cultivation reduced the competitive impact by winter rye in wide rows. Yield differences between wide-and narrow-row organic soybean with winter rye were not as great as other research evaluating row spacings in the absence of winter rye [10].…”

Section: Resultscontrasting

confidence: 76%

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Spring-Interseeded Winter Rye Seeding Rates Influence Weed Control and Organic Soybean Yield

Nelson

Smeda

Smoot

2011

International Journal of Agronomy

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Field research in 2002 and 2003 evaluated spring-interseeded winter rye (Secale cereale L.) at 67, 134, or 200 kg ha −1 at two soybean (Glycine max (L.) Merr.) row spacings (19-and 76-cm) on weed control, yield, and gross margins. Based on regression analysis, wide-row (76-cm) soybean grain yield and gross margins were greatest when winter rye was interseeded at 114 and 106 kg ha −1 , respectively. Yields and gross margins for wide-row soybean were 8 to 55% greater than narrow-row (19-cm) soybean seeded at 494,000 or 742,000 seeds ha −1 which was probably due to flexibility for implementing cultivation. As interseeded rye rates increased from 67 to 200 kg ha −1 , yields and gross margins for narrow-rows decreased. Soybean row spacing had minimal impacts on specific weed species and total weed biomass or density. The use of wide-row soybean and spring-interseeded rye at 67 kg ha −1 was more cost-effective compared to narrow rows.

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Section: Resultscontrasting

confidence: 76%

“…Weed interference has affected soybean yields more in organic production systems than in conventional systems [8,9], especially in narrow rows [10]. Weed control using companion crops such as winter rye seeded and narrowrow soybean was described in the 1950s [11].…”

Section: Introductionmentioning

confidence: 99%

Spring-Interseeded Winter Rye Seeding Rates Influence Weed Control and Organic Soybean Yield

Nelson

Smeda

Smoot

2011

International Journal of Agronomy

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“…Several studies have investigated in grain legumes the effect of row spacing (Whish et al, 2002;Laureti et al, 1995), and chemical and mechanical control (Mohamed et al, 1997;Amador-Ramirez et al, 2001;Giambalvo et al, 1999;Hanson and Thill, 2001) on weed suppression. Other research was addressed to integrated weed control (Solh and Pala, 1990;Gunsolus, 1990;Kluchinski and Singer, 2005). This last topic, however, is generally presented with few references to its impact on crop competitiveness and weed management practices in a Mediterranean environment.…”

Section: Introductionmentioning

confidence: 99%

Weed control strategies for grain legumes

Avola

Tuttobene

Gresta

et al. 2008

Agron. Sustain. Dev.

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“…Weed control is a primary concern in organic production systems (Kluchinski and Singer, 2005; Minnesota Dep. of Agriculture, 2008).…”

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confidence: 99%

Soybean Cultivar Response to Planting Date and Seeding Rate under Organic Management

Coulter

Sheaffer

Haar³

et al. 2011

Agronomy Journal

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Delayed planting is a common strategy for enhancing weed control in organic soybean [Glycine max (L.) Merr.] production, but it has the potential to reduce yield. Increasing soybean seeding rate may be a way to enhance weed control with early planting, and to mitigate potential yield losses due to delayed planting. From 2006 to 2008, experiments were conducted in southern and central Minnesota in organically managed systems with tillage for weed control to determine agronomic responses of soybean and weed density to planting date and seeding rate for feed-and food-grade soybean cultivars. Increasing seeding rate from 395,400 to 543,600 seeds ha -1 did not enhance weed control or soybean yield, and this was consistent across planting dates and cultivars. Total weed density at harvest and soybean yield were greatest when planting occurred in mid-or late May, and were reduced by 51 and 21% when planting was delayed until mid-June, respectively. Yield of feed-grade cultivars was 21% higher than food-grade cultivars, which was consistent across planting dates. Total weed density at harvest diff ered among cultivars, and was lowest with two of the three highest-yielding cultivars. Th ese results demonstrate that in organic cropping systems with tillage for weed control in the Upper Midwest, planting in mid-to late May rather than mid-June is critical for maximizing yield, while high seeding rates are not likely to improve yield or weed control.

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Evaluation of Weed Control Strategies in Organic Soybean Production

Cited by 7 publications

References 9 publications

Spring-Interseeded Winter Rye Seeding Rates Influence Weed Control and Organic Soybean Yield

Spring-Interseeded Winter Rye Seeding Rates Influence Weed Control and Organic Soybean Yield

Weed control strategies for grain legumes

Soybean Cultivar Response to Planting Date and Seeding Rate under Organic Management

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