Abstract:
A field experiment was conducted to study the physiological basis of variation in pigeonpea
productivity under rain fed situations at College of Agriculture, Raichur during the year 2013-14.
The pigeonpea crop was sown on three different dates i.e. 10th July, 1st August and 20th August in
order to create natural thermo variability during crop growth . Significantly higher seed yield
was recorded with early sown crop( 10th July, 2052.40 kg ha-1
) over the late sown crop (1
st
August,1290.01 kg ha-1
and 20th August (894.70 kg ha-1
). The higher yield of early sown crop
may be attributed to higher pods per plant (627.02), pod weight per plant (162.46 g plant-1
), 100
seed weight (10.87 g), plant height (184.31 cm), total dry matter (403.78 g plant-1
), number of
primary branches (21.63) and number of secondary (48.50), stem thickness (8.23 cm) and more
number of days to attain physiological maturity (165.87). Further, Low yield of Pigeonpea
under late sown condition may be attributed to reduced crop duration due to short day nature of
plant and was expressed in terms earliness in maturity. However, among the genotype studied
cv. Asha (1670.14 kg ha-1
) recorded significantly higher seed yield over other three genotypes . It
might be due to longer duration of the crop growth and ascribed to higher number of pods per
plant, pod weight per plant, 100 seed weight, plant height, total dry matter, and stem thickness,
number of primary and secondary branches. |
