Yield and economics of traditional and early soybean production system (ESPS) seedings in the midsouthern United States

Heatherly, Larry G.; Spurlock, Stan R.

doi:10.1016/s0378-4290(99)00025-8

Cited by 47 publications

(65 citation statements)

References 16 publications

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“…While narrow rows (i.e., 38 cm or less) often yield higher than wide rows, the yield advantage is minor, ranging from 5 to 8% (Cox and Cherney 2011;Pedersen and Lauer 2003). However, narrow row spacing is thought to make soybeans more vulnerable to late season drought (Walker et al 2010;Heatherly and Spurlock 1999). The cultural practice of planting soybean in narrow rows also carries important weed control implications for organic farmers.…”

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Cultural Strategies for Managing Weeds and Soil Moisture in Cover Crop Based No-Till Soybean Production

2014

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A four site-year study was conducted in North Carolina to evaluate the effects of soybean planting timing and row spacing on soil moisture, weed density, soybean lodging, and yield in a cover cropbased no-till organic soybean production system. Soybean planting timing included roll-kill/planting and roll-kill/delayed planting where soybean planting occurred either on the same day or approximately 2 wk later, respectively. Soybean row spacing included 19, 38, and 76 cm, and all treatments included a weedy check and weed-free treatment. Rye biomass production averaged above 10,000 kg ha 21 dry matter, which resulted in good weed control across all sites. Despite having good weed control throughout all treatments, weed coverage was highest in the 76-cm row-space treatment when compared to both the 19-cm and 38-cm row spacing in two of the four site-years. Soybean lodging is a potential consequence of no-till planting of soybeans in high residue mulches, and of the three row spacings, the 19-cm spacing exhibited the greatest incidence of lodging. Row spacing also influenced soybean yield; the 19-and 38-cm row spacing out yielded the 76-cm spacing by 10%. Soil volumetric water content (VWC) was higher in the cereal rye mulch treatments compared to the no rye checks. Furthermore, delaying soybean planting lowered soil water evaporation. However, the increased soil VWC in the rolled-rye treatment did not translate into increased soybean yield. The rolled-rye treatment exhibited significant (P , 0.01) increases in soil VWC when compared to the no-rye treatment at three of the four site-years. These results highlight planting date flexibility and potential risk to lodging that producers face when no-till planting organic soybeans. Nomenclature: Glyphosate; s-metolachlor; imazethapyr; redroot pigweed, Amaranthus retroflexus L.; cereal rye, Secale cereal L.; DM, dry matter.

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Cultural Strategies for Managing Weeds and Soil Moisture in Cover Crop Based No-Till Soybean Production

2014

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“…Increased yields, decreased production costs, and higher commodity prices have resulted in an overall increase in economic returns from soybeans in the mid-South (Boquet 1998, Heatherly andSpurlock 1999). Traditionally, maturity group V, VI, and VII soybean varieties were grown in the mid-southern states of Louisiana, Mississippi, and Arkansas.…”

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Influence of Soybean Planting Date and Maturity Group on Stink Bug (Heteroptera: Pentatomidae) Populations

et al. 2006

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“…Twenty-eight percentage of the world land area is arid and 22 % has soils with mineral nutrient problems (Kramer and Boyer 1995). Drought is a factor frequently limiting growth, yield and N-accumulation in plant production (Heatherly and Spurlock 1999, Pandey et al 2000, Deblonde and Ledent 2001, De Costa and Shanmugathasan 2002. Increased soil water deficit (wd) is correlated with reduced dry matter (DM) development (Lopez et al 1996a,b, Lazcano-Ferrat and Lovatt 1999, Grieu et al 2001.…”

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Influence of Water Deficit on Uptake and Distribution of Nitrogen in Soybeans Monitored by Soil Injected ¹⁵N

Herzog¹,

Götz²

2004

J Agronomy Crop Science

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A pot experiment was carried out in a climatic chamber to study 15N‐uptake, translocation and recovery in soybeans [Glycine max (L.) Merr.] as affected by a 13 day interval of water deficits (wd) starting at flowering. Ten or 40 mg 15N (500 or 2000 p.p.m. 15N) was injected at 0.4 m depth into the soil 3 days after flowering (3 DAF). A dose of 10 mg 15N, resulted in a translocation of 50 and 80 % to the shoot at 7 and 13 DAF, respectively; thus the uptake of 15N into the plant organs was limited by the low remaining 15N in the soil after 7 DAF. Therefore, only results referring to the 40 mg 15N application are presented here. The daily 15N‐uptake of well‐water (ww) plants during the 10 days of investigations was about c. 2.5 mg 15N, it was significantly higher than under wd at 7 DAF and tended to be higher at 13 DAF. The reduction by wd was also evident by a lower recovery of 15N (55 % instead of 75 %) at 13 DAF. In almost all leaves and pods there was a trend to a lowered translocation (mg 15N per organ) under wd when compared with the ww plants at 7 and 13 DAF; lowering due to wd was strongest and significant in upper leaves and pods at 13 DAF, whereas translocation to stems was even slightly increased. Relative accumulation of 15N (mg g−1 dry matter) in leaves, stems and pods increased from the bottom to the top indicating an higher sink activity of younger organs. Water deficits tended to lower this relative 15N‐accumulation in all leaves and pods at 7 and 13 DAF, and caused a significant reduction in upper leaves and pods at 7 DAF. Absolute and relative 15N‐accumulation in stems tended to be affected differently by wd, being unaffected or slightly decreased at 7 DAF, but increased at 13 DAF. These differential effects of wd are discussed.

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Yield and economics of traditional and early soybean production system (ESPS) seedings in the midsouthern United States

Cited by 47 publications

References 16 publications

Cultural Strategies for Managing Weeds and Soil Moisture in Cover Crop Based No-Till Soybean Production

Cultural Strategies for Managing Weeds and Soil Moisture in Cover Crop Based No-Till Soybean Production

Influence of Soybean Planting Date and Maturity Group on Stink Bug (Heteroptera: Pentatomidae) Populations

Influence of Water Deficit on Uptake and Distribution of Nitrogen in Soybeans Monitored by Soil Injected ¹⁵N

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Yield and economics of traditional and early soybean production system (ESPS) seedings in the midsouthern United States

Cited by 47 publications

References 16 publications

Cultural Strategies for Managing Weeds and Soil Moisture in Cover Crop Based No-Till Soybean Production

Cultural Strategies for Managing Weeds and Soil Moisture in Cover Crop Based No-Till Soybean Production

Influence of Soybean Planting Date and Maturity Group on Stink Bug (Heteroptera: Pentatomidae) Populations

Influence of Water Deficit on Uptake and Distribution of Nitrogen in Soybeans Monitored by Soil Injected 15N

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Influence of Water Deficit on Uptake and Distribution of Nitrogen in Soybeans Monitored by Soil Injected ¹⁵N