Evaluating Growth and Yield Indices of groundnut (Arachis hypogaea L.) and sweet Corn (Zea mays var. Saccarata) in crop intensification systems
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Authors
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Dr. Prakashchandra Parmar
Agriculture
Keywords:
CGR, RGR, LAI, LAR, NAR, LER, LEC, ATER and GPEYAbstract
A field study took place on clayey soil at RRRS, NAU, Vyara, Gujarat (India) during the year of 2020–21 and 2021–22 in summer seasons. Groundnut and sweetcorn were used as a test material under ten treatments in RBD, replicated thrice. In comparison to alternative intercropping systems, the results indicated that sole cropping of both crops had significantly the highest per plant dry matter accumulation at 60, 80 DAS and harvest. CGR (40-60, 60-80 DAS, 80 DAS-harvest) of groundnut and RGR (40-60 DAS) were recorded significantly highest under sole groundnut. Whereas, CGR at 20-40 DAS, 40-60 DAS and RGR at 40-60 DAS of sweet corn were recorded significantly highest under replacement series of (3:1) groundnut+ sweet corn, sole sweet corn and (1:1) & (2:1) in replacement series, respectively. But leaf area, LAI and LAR of groundnut significantly increased with groundnut + sweet corn sown in paired row (2:1) (30-60-30 cm) and which of sweet corn with sole cropping and replacement series of groundnut+ sweet corn in row ratio of 3:1 & 1:1, respectively. Significantly the highest value of NAR of main and intercrop were recorded under the sole. On the other hand, actual yield of intercrop in mix/intercropping with groundnut were higher than that of expected yield of their respective sole crop proportion. Groundnut + sweet corn sown in paired row (2:1) (30-60-30 cm) resulted in significantly higher productivity in terms of GPEY (3221 kg/ha) and biological efficiency (LER 1.88, LEC 0.88 and ATER 1.75), when compared to sole groundnut (1831 kg/ha) and other mix/intercropping systems. In terms of GPEY these treatment followed by additive series of groundnut + sweet corn (3:1) (3073 kg/ha). Based on the results, it is possible to utilize these two intercropping strategies for crop intensification in order to achieve higher GPEY.
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