Effect of fertility levels and row spacing on growth and yield of some promising genotypes of clusterbean (Cyamopsis tetragonoloba)

A field experiment was conducted at Gwalior (Madhya Pradesh) during kharif-2009 to study the effect of fertilizer (10–20 and 20–40 kg N-P2O5/ha) and row spacing (30 and 45 cm) on clusterbean genotypes (HG-04-875, RGR-6, RGR-7 and HG-563). The results indicated that number of branches/plant and length of pod significantly increased with increasing dose of fertilizer from 10–20 to 20–40 kg N-P2O5 kg/ha. However, plant height, biomass/plant, number of pods/plant, number of seeds/pod, test weight, seed weight/plant, stalk weight/plant, seed yield, stalk yield and harvest index remained unaffected due to fertility levels. Crop sown at 45 cm row spacing produced more number of branches/plant, biomass/plant, number of pods/plant, number of seeds/pod, seed weight/plant and stalk yield than 30 cm row spacing. While plant height, length of pod, test weight, stalk weight/plant and seed yield were not influenced by row spacing. Harvest index significantly decreased at 45 cm row spacing over 30 cm row spacing. Clusterbean genotypes differed significantly in plant height, biomass/plant, number of pods/plant, 100-seed weight, seed weight/plant, stalk weight/plant, seed yield, stalk yield and harvest index and the variety ‘HG-563’ followed by ‘RGR-6’ were found superior to others in these respects.