Genomics and Applied Biology 2016, Vol.7, No.1, 1-9
2
though all input materials are supplied in time (Safdar et al., 2008). Thus transplantation of high yielding varieties
of rice at the appropriate time is the most important factor for obtaining high yield of rice.
Due to lack of irrigation facility, quality seeds, fertilizers and labour in time; most Nepalese farmer’s cannot
transplant rice seedlings in appropriate time and get delayed. Hence the main objective of this experiment was to
find out the reasons behind the yield reduction in farmer’s field though farmers supply all inputs materials in time
for rice production.
2 Material and Methods
2.1 Experimental sites
This experiment was conducted in Agriculture Botany Division, Khumaltar, Lalitpur, Nepal at an altitude of 1368
m from mean sea level and latitude of 27
0
40
’
N 85
0
20
’
E. Two sites with irrigated low land and rainfed upland
were chosen for both early and delayed transplanting respectively. Rice growing seasons monthly average
maximum and minimum temperature with average rainfall was also recorded from 2011 to 2014 (Table 1).
Table 1 Rice seasons monthly mean weather data from 2011 to 2014. Rice growing seasons seven months mean maximum
temperature, minimum temperature and average rainfall of Agriculture Botany Division, Khumaltar, Lalitpur, Nepal
Year
Month
Maximum mean
temperature
Minimum mean temperature Mean rainfall
2011
May
27.41
16.14
151.20
2011
June
28.31
18.51
315.40
2011
July
27.81
20.40
240.95
2011
August
27.92
20.27
377.00
2011
September
27.05
19.27
210.00
2011
October
26.34
13.57
17.00
2011
November
21.59
8.88
6.20
2012
May
29.46
15.06
77.80
2012
June
30.45
20.16
139.20
2012
July
27.97
20.60
362.20
2012
August
28.12
20.31
212.60
2012
September
27.87
19.13
199.10
2012
October
25.98
12.03
0.20
2012
November
22.79
5.63
28.41
2013
May
28.11
23.98
197.00
2013
June
28.07
21.01
242.00
2013
July
27.73
21.60
223.00
2013
August
27.95
21.41
376.50
2013
September
27.83
20.80
134.20
2013
October
24.99
18.06
94.00
2013
November
22.42
11.55
0.00
2014
May
28.46
15.86
125.50
2014
June
28.95
20.36
93.20
2014
July
28.45
21.18
270.00
2014
August
28.16
20.66
236.60
2014
September
27.19
19.20
112.20
2014
October
25.28
13.34
75.20
2014
November
22.70
9.09
0.00
2.2 Genotypes used, design and procedure
Randomised complete block design with three replications were used to perform this experiment. Twelve rice
genotypes were selected for coordinated varietal trial (CVT) from initial evaluation trial (IET) along with
Khumal-4 as a popular standard check. Six rice genotypes viz. NR10769-4-2-2, NR 10553-B1-25-2, NR
10676-B-5-3, NR 11082-B-B-16, Khumal-11 and Khumal-4 were common in 2011 and 2012 whereas seven
genotypes IR 84899-B, NR 10676-B-5-3, NR 11050-B-B-B-B-17, YR25696-B-196-3-3, NR 11011-B-B-B-B-29,
