Early‐Maturing Soybean in a Wheat–Soybean Double‐Crop System Yield and Net Returns

Kyei-Boahen, Stephen; Zhang, L.

doi:10.2134/agronj2005.0198

Cited by 47 publications

(36 citation statements)

References 20 publications

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“…Double‐cropping or sequentially producing two crops in a single season is commonly practiced in the mid‐South and southern U.S. regions where the most common double‐crop system is a small grain, generally a winter cereal, followed by soybean (Crabtree et al, 1990; Kyei‐Boahen and Zhang, 2006). Other short‐season summer annual crops such as forage sorghum ( Sorghum bicolor L. Moench), pearl millet ( Pennisetum americanum L.), and sunflower ( Helianthus annuus L.) have also been successfully double‐cropped after a winter cereal (Helsel and Wedin, 1981; Crabtree et al, 1990).…”

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“…Relay‐cropping also allows earlier seeding of the legume (typically soybean) and increases the potential to harvest the small grain as a cash crop rather than for forage. Although the economics of dual crop systems in the South are generally favorable (Kyei‐Boahen and Zhang, 2006), results have been mixed in the Great Plains. For instance, Kelley (2003) found that over a 10‐yr period in Kansas, wheat ( Triticum aestivum L.)–soybean double‐cropping systems provided significantly greater net returns than a conventional 2‐yr wheat–soybean rotation.…”

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Dual Cropping Winter Camelina with Soybean in the Northern Corn Belt

2014

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Sustainably balancing biofuel crop production with food, feed, and ber on agricultural lands will require developing new cropping strategies. Double-and/or relay-cropping winter camelina (Camelina sativa L.) with soybean [Glycine max (L.) Merr.] may be a means to produce an energy and food crop on the same land in a single year. A study was conducted between 2009 and 2011 in west central Minnesota to evaluate yields, seed quality, economics, and within-eld energy balance of winter camelinasoybean double-and relay-cropping systems compared with a conventional monocropped full-season soybean. Systems included methods to hasten camelina harvest (e.g., swathing and desiccating) to promote early soybean growth. Camelina seed yields were una ected by cropping system and ranged from 1.1 to 1.3 Mg ha -1 . Relay-cropped soybean yields were greater than doublecropped soybean and were 58 to 83% of that for the monocropped control. Seed oil and protein content of double-and relaycropped soybean were comparable to their monocropped counterpart and combined seed oil yield for the dual crop systems was as much as 50% greater. Net economic returns for the relay-crop treatments were competitive with that of the full-season soybean. Moreover, net energy of the relay-crop treatments was generally as high as the sole soybean crop, but energy e ciency (outputs/ inputs) was less due to greater inputs. Results indicate that dual cropping of winter camelina with soybean is agronomically viable for the upper Midwest and might be an attractive system to growers seeking a "cash" cover crop.

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Dual Cropping Winter Camelina with Soybean in the Northern Corn Belt

2014

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“…Soybean double cropped with soft red winter wheat is a common practice in the Midwest (Kyei‐Boahen and Zhang, 2006). Double cropping soybean allows producers to generate income and maintain wheat in the crop rotation while reducing the potential for erosion through increased soil cover (MacKown et al, 2007).…”

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Effects of Polymer‐Coated Urea Application Ratios and Dates on Wheat and Subsequent Double‐Crop Soybean

et al. 2012

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Eff ective management of soil N fertilizer, including the use of enhanced effi ciency N fertilizer sources and optimal dates of fertilizer application, may increase agronomic performance of double-cropped winter wheat (Triticum aestivum L.) with soybean [Glycine max (L.) Merr.] under no-till (NT) management. In a double-cropping system, ratios and dates of application of polymercoated urea (PCU) may aff ect both wheat and subsequent soybean yields. Th e objectives of this research, conducted over three growing seasons (2008-2010) in northeastern Missouri, were to evaluate urea release over a range of PCU application dates, and to assess the eff ects of the fall to spring application dates of PCU and ratios of PCU with noncoated urea (NCU) compared with ammonium nitrate (AN) and NCU on wheat and double-crop soybean yield. Th e experimental design was a factorial that included two N application rates (84 and 112 kg N ha -1 ), seven application dates (October-April), fi ve N fertilizer source/ratios, and nontreated controls. Urea-N release from PCU fertilizers applied on 15 October was <30% by 15 February in two of the three study years. Wheat yields were signifi cantly (P ≤ 0.05) aff ected by the three-way interactions of year × N source × N rate and year × N source × application date. In two of the three study years, yields were 450 to 500 kg ha -1 greater with an October application of 100% PCU compared to 100% NCU. Double-crop soybean yields were not aff ected by preceding winter wheat N management.

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“…The expansion of cultivation under adverse conditions and the growth of the soybean [Glycine max (L.) Merrill] market have required the use of earlier-maturing cultivars (Abrahão & Costa, 2018;Kyei-Boahen & Zhang, 2006). In this regard, soybean breeding programmes have intensified efforts to obtain segregating populations to develop superior, short-cycle genotypes as new cultivars.…”

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Selection of inbred soybean progeny (Glycine max): an approach with population effect

et al. 2018

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To meet the growing demand of the soybean consumer market, cultivars increasingly early, productive and resistant to biotic and abiotic stress are sought. Several populations are obtained in soybean breeding programmes, but progeny are selected without being weighted for their respective population effect. As a consequence, progeny originating from high-merit populations may be discarded too early. Given this scenario, this study proposes to employ the selection index with progeny and population effect via best linear unbiased prediction (SIPP-BLUP) for the genetic selection of early and productive soybean progeny. A total of 180 progeny derived from three populations were evaluated for yield-related traits. Genetic gains from selection, Spearman correlation and coincidence index were used to check the efficiency of the models with and without the population effect. The SIPP-BLUP index achieved greater selection accuracy and was efficient in the identification and future selection of early soybean progeny. Therefore, this study demonstrates that soybean breeding programmes should consider the population effect via SIPP-BLUP in progeny selection to obtain future lines that really contribute to genetic gain. K E Y W O R D Saccuracy, breeding values, earlier-maturing progeny, genetic gain, genotype × environment interaction, mixed models, soybean seed yield

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Early‐Maturing Soybean in a Wheat–Soybean Double‐Crop System Yield and Net Returns

Cited by 47 publications

References 20 publications

Dual Cropping Winter Camelina with Soybean in the Northern Corn Belt

Dual Cropping Winter Camelina with Soybean in the Northern Corn Belt

Effects of Polymer‐Coated Urea Application Ratios and Dates on Wheat and Subsequent Double‐Crop Soybean

Selection of inbred soybean progeny (Glycine max): an approach with population effect

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