Yield ability and net return of rice-based cropping sequences under different water regimes in Bihar, India [Abst.]

Yield ability and net return of rice-based cropping sequences under different water regimes in Bihar, India [Abst.]

1994

A:PS

Variation in irrigation levels and cropping sequences caused significant differences in yield. The interaction between irrigation and cropping sequence was also significant. At each irrigation level, rice-potato-green gram yielded the most, followed by rice-winter maize-black gram. At the suboptional and optimal levels, yields did not differ significantly between sequences containing mustard and gram. At the supraoptimal level, gram had a significant decrease in yield compared with mustard because gram does not respond to more frequent irrigation. Variation in net return due to irrigation level and cropping sequence was significant, as was the interaction effect between irrigation and cropping sequence. Net return grew significantly with each increase in irrigation level for rice-potato-green gram, but for rice-winter maize-black gram, net return increased only up to the optimum irrigation level. Net returns were not significantly different between rice-wheat-green gram and rice-winter maize-black gram at the suboptimal level; at higher levels, net return was superior for the latter.

v.19(1):26-27, INTERNATIONAL RICE RESEARCH NOTES

Research > Published Articles