Row Spacing in the Early Soybean Production System

Bowers, Glenn R.; Rabb, J. L.; Ashlock, Lanny O.; Santini, Judith B.

doi:10.2134/agronj2000.923524x

Cited by 43 publications

(52 citation statements)

References 20 publications

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“…In agreement with previous studies conducted in various environments (Boquet 1990, Yunusa and Ikawelle 1990 , Bowers et al. 2000, Gan et al.…”

Section: Discussionsupporting

confidence: 93%

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Row and Plant Spacing Effects on Yield and Yield Components of Soya Bean Varieties Under Hot Humid Tropical Environment of Ethiopia

Worku¹,

Astatkie²

2011

Journal of Agronomy and Crop Science

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Appropriate plant density is a key for gainful production of soya bean in various environments including the hot‐humid tropical environments (HHTE) of Ethiopia. A split‐plot factorial experiment was conducted under HHTE in south‐west Ethiopia to determine the effect of Variety (Clark, CSC‐1), Row spacing (50, 55, 60, 65, 70 cm) and Plant spacing (2.5, 5, 10 cm) on yield and yield components, and weed infestation of soya bean. The effect of Plant spacing was more Variety‐specific than that of Row spacing. Yield and yield components per m2 were significantly affected by both Row spacing and Plant spacing. However, per plant and per pod responses and weed infestation were affected mainly by Plant spacing, and not that much by Row spacing. Seed yield and yield components per m2 were the highest for the highest plant density (50 cm Row spacing, 2.5 cm Plant spacing), but individual plant and pod responses, and weed infestation were the highest for wider Plant spacing (10 cm). Regression analysis of various responses on planting density showed negative, cubic relationship albeit with different strength. This study demonstrated that these factors significantly modify soya bean yield and yield components as well as weed infestation, suggesting that they could be used as management tools for increased yield in HHTE.

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“…In agreement with previous studies conducted in various environments (Boquet 1990, Yunusa and Ikawelle 1990 , Bowers et al. 2000, Gan et al.…”

Section: Discussionsupporting

confidence: 93%

“…Producing significantly higher seed yield and yield components per m 2 in narrower spacing (Table 4, Fig. 1) is in accordance with the results of most of the previous studies (Herbert and Litchfield 1984, Boquet 1990, Asanome and Ikeda 1998, Bowers et al. 2000, De Bruin and Pedersen 2008, Acikgoz et al.…”

Section: Discussionsupporting

confidence: 91%

Row and Plant Spacing Effects on Yield and Yield Components of Soya Bean Varieties Under Hot Humid Tropical Environment of Ethiopia

Worku¹,

Astatkie²

2011

Journal of Agronomy and Crop Science

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“…Across years, seeding dates, and weed treatments, seed yields were 25% lower when plants were seeded at a 60-cm row spacing compared with 20 or 40 cm. Greater seed yields in narrow row soybean were also reported by others in a range of environments (Herbert and Litchfield 1984;Oriade et al 1997;Bowers et al 2000;Heatherly et al 2002;Holshouser and Whittaker 2002;Lee 2006). For example, Herbert and Litchfield (1984) reported 23% lower seed yield in soybean grown at 75-than 25-cm row spacing.…”

Section: Seed Yieldmentioning

confidence: 62%

Seeding date, row spacing, and weed effects on soybean isoflavone concentrations and other seed characteristics

Al-Tawaha¹,

Séguin²

2006

Can. J. Plant Sci.

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20-, 40-and 60-cm) and weeds (presence or absence) on soybean isoflavone concentrations and isoflavone yield. Total and individual isoflavone concentrations were determined by HPLC. Seed yield, and oil and crude protein (CP) concentrations were concurrently determined. Year, seeding date, and weeds affected total and individual isoflavone concentrations, while row spacing had no effect. Total isoflavone concentration was 84% greater in 2003 than 2004. Seeding in mid-June increased isoflavone concentration by 38%, compared with seeding in May. The presence of weeds increased total isoflavone concentration by 9%. Year, row spacing, and weeds significantly affected seed yields. Seed yields were greatest in 2004, at 20-or 40-cm row spacing, and in the absence of weeds. Seeding date affected CP and oil concentrations. Greater CP concentration was observed with earlier seeding, the reverse was observed for oil. Weeds also affected CP and oil concentrations: higher CP and oil concentrations were observed in weedy and weed-free plots, respectively. Total isoflavone yield was affected by all factors evaluated. Isoflavone yield was greater in 2003 than 2004, with mid-June rather than late May seeding, when seeded at row spacing of 20-or 40-than 60-cm, and without weeds. Finally, negative correlations were observed between isoflavone concentrations and CP concentration and seed yield. It thus seems that certain agronomic practices may need to be tailored specifically to isoflavone production if concentrations in soybean are to be maximized. The negative correlations observed between isoflavone concentrations and other important seed characteristics warrant further research. La concentration de PB est plus élevée quand on sème plus tôt, l'inverse étant vrai pour l'huile. Les mauvaises herbes influent aussi sur la concentration de PB et d'huile, la première étant plus élevée dans les parcelles avec adventices et la seconde dans celles sans mauvaises herbes. Le rendement total en isoflavones subit l'influence de tous les paramètres examinés. Le rendement en isoflavones était plus élevé en 2003 qu'en 2004, avec les semis à la mi-juin plutôt qu'à la fin de mai, à un écartement de 20 ou de 40 cm plutôt que de 60 et dans les parcelles sans mauvaises herbes. Enfin, la concentration d'isoflavones présente une correlation négative avec le rendement grainier et celle de PB. Il semble donc qu'on devrait adapter certaines pratiques agricoles pour optimiser la production d'isoflavones par le soja. Les corrélations négatives observées entre la concentration d'isoflavones et d'autres caractéristiques importantes de la graine justifient la tenue d'autres recherches.

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“…A study conducted by Bowers et al (1999), with row spacing ranging from 25 to 100 cm, reported that narrow lines, less than or equal to 40 cm, should be used to optimize the yields of crops. Table 3.…”

Section: Resultsmentioning

confidence: 99%

Spatial arrangements and fertilizer doses on soybean yield and its components

Duarte

Cruz

Soares

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe aim with this study was to evaluate the effects of single-and twin-row spatial arrangements associated with different doses of fertilization on soybean yield and its components. The experiment was carried out at Federal University of Goiás, Campus of Jataí, in a split-plot randomized block design with 10 treatments and four replicates. Each plot corresponded to a dose of P and K fertilization (0, 50, 100, 200 and 400% of the recommended dose) and the subplots to two types of spatial arrangements: single and twin rows. The yield components evaluated were plant final population, number of pods and seeds per plant, number of seeds per pod, weight of a thousand grains and yield. The increase in fertilization dose, even at doses two and four times higher than recommendation, results in increased soybean grain yield for both studied arrangements. The single-row arrangement provides greater soybean yield, regardless of the dose of fertilization, although most of the production components were not negatively affected, except the population.

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Row Spacing in the Early Soybean Production System

Cited by 43 publications

References 20 publications

Row and Plant Spacing Effects on Yield and Yield Components of Soya Bean Varieties Under Hot Humid Tropical Environment of Ethiopia

Row and Plant Spacing Effects on Yield and Yield Components of Soya Bean Varieties Under Hot Humid Tropical Environment of Ethiopia

Seeding date, row spacing, and weed effects on soybean isoflavone concentrations and other seed characteristics

Spatial arrangements and fertilizer doses on soybean yield and its components

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