Wheat (<i>Triticum aestivum</i>L.) Cultivar Selection Affects Double-Crop and Relay-Intercrop Soybean (<i>Glycine max</i>L.) Response on Claypan Soils

Nelson, Kelly A.; Meinhardt, Clinton G.; Smoot, Randall L.

doi:10.1155/2010/543261

Cited by 12 publications

(12 citation statements)

References 32 publications

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“…was nearly the optimal seeding rate for both wide-and narrow-row organic soybean yields (Figures 1 and 2), we performed additional economic analysis to evaluate the impact of various seed cost and soybean return scenarios (Figure 3) similar to other research [30,34,35]. As seed cost increased from $0.72 to $2.16 kg −1 , gross margins decreased from $85 to $185 ha −1 depending upon the row spacing.…”

Section: Resultsmentioning

confidence: 92%

“…Precipitation from seeding until 1 October was 232 mm in 2002 and We performed an economic analysis to evaluate gross margins for spring-seeded winter rye rates in wide-and narrow-row soybean. The gross margin was the difference between gross receipts and weed-management costs [29,30]. Gross receipts were the product of crop yield and an assumed market price of $37.05 ha −1 [31].…”

Section: Methodsmentioning

confidence: 99%

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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: Resultsmentioning

confidence: 92%

Section: Methodsmentioning

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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“…At Novelty, the 2010 growing season received the greatest precipitation (1082 mm) of all four site years which was 362 mm greater than the average precipitation for the past decade (Nelson et al, 2010). Soil temperatures at a depth of 5.1 cm were similar for all locations within a particular year, but temperatures differed by year (Figure 2).…”

Section: Resultsmentioning

confidence: 94%

Utility of Phosphorus Enhancers and Strip-Tillage for Corn Production

Dudenhoeffer¹,

Nelson²,

Motavalli³

et al. 2013

JAS

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Farmers are seeking ways to diminish phosphorus (P) fertilizer rates and increase plant P uptake by means of enhanced efficiency P treatments. The objectives of this study were to determine the effects of tillage/fertilizer placement [no-till-surface broadcast (NT-BC) or strip-till-deep band (ST-DB)], monoammonium phosphate (MAP) rate (0, 56, and 112 kg ha -1 ), and the presence or absence of enhanced phosphorus efficiency products (Avail ® and P 2 O 5 -Max ® ) on corn (Zea mays L.) production. The field study was conducted in 2010 and 2011 at Novelty and Albany, MO. The two P enhancers had no effect on plant population, silage dry weights, grain moisture, yield, grain protein, grain starch, plant nitrogen (N), potassium (K) uptake, or apparent P recovery efficiency (APRE) at either location (P>0.10). In the NT-BC and ST-DB treatments, the addition of Avail ® or P 2 O 5 -Max ® did not increase plant P uptake over the non-treated controls. ST-DB increased plant populations 3,500 to 15,500 plants ha -1 compared to NT-BC. At Novelty, yields increased 1.57 Mg ha -1 with use of ST-DB over NT-BC, but at Albany yields were affected by tillage/fertilizer placement and MAP rate. Corn grain yields with MAP at 0 kg ha -1 were 0.30 to 0.36 Mg ha -1 more than MAP at 56 or 112 kg P 2 O 5 ha -1 , which was probably due to the added ammonium nitrate used to balance the N contribution in MAP. Strip-till is a viable option to increase corn populations and yields on poorly drained soils, but P enhancers are not recommended for similar soil types.

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“…In addition, late-summer temperatures decreased, allowing growth during more favorable conditions (an average temperature of 22.4°C from planting to harvest). Finally, because wheat had been harvested, the alternative crops did not have to compete for water and other resources such as light (Nelson, Meinhardt, & Smoot, 2010). The frost-seeding system may have been less successful for radishes due to cooler temperatures and time of season when radish seed was broadcast seeded.…”

Section: Alternative Crop Yieldsmentioning

confidence: 99%

Inter- and Double-crop Yield Response to Alternative Crop Planting Dates

Sandler¹,

Nelson²

2014

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Planting date is an integral part of a successful double-crop system, and in intercropping it can affect crop yields. Cool-adapted species that can be frost-seeded benefit from an earlier planting date by taking advantage of unused light and space between rows of slow-growing spring or fall crops such as winter wheat. This research evaluated differences between early frost-seeding, midseason relay-intercropping, and double-cropping planting dates of alternative crops (buckwheat, sunflower, radish, faba bean, and hairy vetch) on wheat and alternative crop yields. Field research took place in 2012 and 2013 near Novelty, Missouri. Wheat yields were affected by cropping system and alternative crop selection with significant differences up to 455 kg ha -1 . Alternative crop yields were harder to determine. In 2012, emergence occurred but drought precluded alternative crop yields for the frost-seeded and relay-intercrop systems. However, in 2013, planting date and cropping system affected alternative crops differently, with land equivalent ratio (LER) values showing an advantage for alternative crops when they survived past emergence. In both years, frostseeding provided yield advantages among almost all alternative crops. This research shows that farmers could increase their yield potential for a given field and perhaps produce additional forage or green manure yields in a year with a less severe drought by using alternative crops.

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Wheat (Triticum aestivumL.) Cultivar Selection Affects Double-Crop and Relay-Intercrop Soybean (Glycine maxL.) Response on Claypan Soils

Cited by 12 publications

References 32 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

Utility of Phosphorus Enhancers and Strip-Tillage for Corn Production

Inter- and Double-crop Yield Response to Alternative Crop Planting Dates

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