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Assessment of soybean (Glycine max) and sorghum (Sorghum bicolor) intercropping by using reciprocal model of yield
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Abstract: (4778 Views) |
| A field study was conducted to evaluate the effects of shatter cane and soybean densities on soybean seed yield, and to quantify interspecific and intraspecific interference coefficients. The relationship between soybean seed yield per plant and shatter cane density at different densities of soybean and also with soybean densities at different densities of shatter cane is well described by the reciprocal model. Soybean seed yield per unit area decreased with increasing shatter cane densities. The highest yield loss (57%) was related to 50 and 12 plants/m2 of soybean and shatter cane densities, respectively. Optimum soybean densities on the basis of maximum soybean seed yield per unit area at 0, 4, 8, and 12 plants/m2 of shatter cane were achieved at 50, 34, 32, and 36plants/m2. The combined effects of soybean and shatter cane densities showed that shatter cane was a stronger competitor than soybean, as a shatter cane plant was equal to 2.5 soybean plants, based on soybean seed yield. In contrast, a soybean plant was equal to 0.18 shatter cane plant, on the basis of shatter cane biomass. It was, therefore, concluded that the superior competitor was mostly affected by intraspecific interference, but the weaker competitor was mostly affected by interspecific interference. |
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| Keywords: Soybean, Shatter cane, Competition, Reciprocal model of yield, Seed yield, Biological yield |
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Full-Text [PDF 327 kb]
(1402 Downloads)
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Type of Study: Scientific & Research |
Subject:
Special
Received: 2015/02/28 | Accepted: 2015/02/28 | Published: 2015/02/28
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