COMPETITION FUNCTIONS AND ECONOMIC VIABILITY OF INTERCROPPING OF SORGHUM (SORGHUM-BICOLOR) AND BLACKGRAM (PHASEOLUS-MUNGO) IN DRYLANDS

Association of 100% population of sorghum [Sorghum bicolor (L.) Moench ] and 75% of blackgram (Phaseolus nungo L.) accounted for maximum land -equivalent ratio (1.33) as well as grain yield (4.38 tonnes/ha) and g ave maximum monetary advantage (Rs 2,960/ha) and net return (Rs 8,437/ ha), i.e. 17.6% and 370.0%, more net return than sole sorghum and sole blackgram respectively. The net return/ Re investment from this treat ment was Rs 2.42/ha. The relative net returns from this association ov er sole sorghum (Rs 1.12)and sole blackgram (Rs 2.44) were also highes t. However, this treatment was very close to the stand of each compone nt species with 100% population for all the parameters of evaluation.