Nh. Nam et al., COMPARISON OF EXTRA-SHORT-DURATION PIGEONPEA WITH SHORT-SEASON LEGUMES UNDER RAIN-FED CONDITIONS ON ALFISOLS, Experimental Agriculture, 29(3), 1993, pp. 307-316
Extra-short-duration pigeonpea (Cajanus cajan) genotypes generally yie
lded more than short-season legumes when sown at the normal time on ra
infed medium-deep Alfisols. However, their growth and yield were more
reduced by delayed sowings and varied more widely between seasons than
those of the short-season legumes, especially cowpea and black gram.
All the crops gave lower yields on shallow Alfisols than on medium-dee
p Alfisols and none was consistently superior. Partitioning of dry mat
ter into grain yield was less affected by time of sowing, soil and sea
son in extra-short-duration pigeonpea genotypes than in short-season l
egumes. Less sensitivity of biomass accumulation to various abiotic co
nstraints is therefore a major objective in improving the adaptation o
f extra-short-duration pigeonpea genotypes.