Agriculture Reference
In-Depth Information
attributed by decrease in panicles per hill and 1000 grain weight
(Table 33).
Table 33
Yield and yield components as affected by date of transplanting.
Days of
transplanting
Panicles per hill
Sterility (%)
1000 grain
weight (g)
Paddy yield
(tha
-1
)
Basmati
385
Super
Basmati
Basmati
385
Super
Basmati
Basmati
385
Super
Basmati
Basmati
385
Super
Basmati
July 01
25.37
30.33
7.7
5.0
21.25
22.03
4.04
5.61
July 11
25.33
38.00
11.0
5.7
21.15
23.60
5.65
5.31
July 21
26.70
36.67
6.0
3.7
20.52
20.90
5.28
4.92
July 31
16.67
31.67
4.0
6.0
20.39
20.08
5.22
4.64
Mean
23.58
34.92
7.17
5.08
21.08
21.65
5.05
5.12
Thus, it is suggested that phosphate application has some
benefi cial effect on cultivation of rice in low temperature.
Hence, judicious application of mineral nutrients specially
nitrogen and phosphorus is important for higher yield even in
abiotic stress conditions. Basuchaudhuri et al. (1986) studied
with the rice genotypes from Kashmir, Bhutan, locals and
Pusa-Khonorullo cross breeds at upper Shillong with cold
stress at reproductive stage and described the agronomic traits.
Khonorullo is a stable variety and the performances of other
varieties are given in the Table 34. Minimum grain yield of 0.1t/
ha was noted in Barkat and a maximum grain yield of 2.5t/ha
was recorded in PK-2-26-1.
It was also noted that suboptimal temperature at
reproductive phase, along with neck blast and sheath rot are
the major constraints to increase rice production in high altitude
areas of NEH in India (Pandey et al. 1992) (Table 35).
