Abstract
A field experiment was conducted during 1995-96 and 1996-97 to study the performance of various intercrops in Solanum viarum Dunal-based intercropping system and find out the effect of intercrops on yield of main crop vis-a-vis economics of the cropping system. The mean dry berry yield of 3.93 tonnestha obtained with S. viarum + clusterbean [Cyamopsis tetragonoloba (L.j Taubert] system was more than yields realized in pure crop of S. viarum (3.63 tonnestha). Highest base crop equivalents were also realized with this cropping system (5.54 tonnestha), followed by 4.40 tonnes with S. viarum + French bean (Phaseolus vulgaris L.), 4.16 tonnes with S. viarum + soybean [Glycine max (L.) Merr.], 3.83 tonnes with greengram (Phaseolus radiatus L.) and 3.73 tonnes with S. viarum + cowpea [Vigna unguiculata (L.) Walp.]. Mean maximum land-equivalent ratio (1.75), net income (Rs 25,581) and income-equivalent ratio (1.61) were also found with S. viarum + clusterbean system.
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