Rk. Ghosh et al., PERFORMANCE OF RAPESEED-MUSTARD CULTIVARS UNDER VARIOUS MOISTURE REGIMES ON THE GANGETIC ALLUVIAL PLAIN OF WEST-BENGAL, Journal of agronomy and crop science, 173(1), 1994, pp. 5-10
A Field trial was conducted during 1988-89 and 1989-90 at Water Manage
ment Research Station, Memari, Bidhan Chandra Krishi Viswavidyalaya, B
urdwan, to study the effect of three different irrigation regimes, nam
ely rainfed (I1) (No irrigation), one irrigation (I2) at flowering and
two irrigations (I3 at flowering and at siliqua formation stages) on
the grain yield and water expenses on four different rapeseed-mustard
cultivars, namely Pusa Bold, Pusa Baroni, Varuna and DIR 247. The vari
ety DIR 247 recorded maximum grain yield (12.1 q ha-1) followed by Pus
a Baroni (11.8 q ha-1). The variety Varuna showed the lowest water use
efficiency (48.1 kg ha-1cm-1) while DIR 247 showed the maximum value
of 57.0 kg ha-1 cm-1. The number of irrigations significantly increase
d the grain yield. Two irrigations, one at flowering and at siliqua fo
rmation stage increased grain yield by 28% over the rainfed plots. Dur
ing the crop growth period the actual water expenses among the cultiva
rs in any moisture regime were more or less similar. The interaction b
etween varieties and irrigation levels were, however, not significant.