Management of rice production systems to increase productivity

Table 36. Nitrogen‐Use Efficiency for Grain Production (NUEg)of Rice
Low‐Input
40‐40‐40
High‐Input
80‐40‐40
Very High Input
160‐80‐80
Varieties in 2000, 2001, 2002, Brikama, The Gambia
Fertilizer Level Variety NUEg
2000 2001 2002
WAB56‐50 87.2
Zero Application WAB56‐125
0‐0‐0
WAB377‐B
Peking
a
81.1a 63.1abcd 75.1ab 49.1ab 66.1a 31.2b 51.7ab 13.5abc 12.2abc 9.4bc 9.5bc Lsd.05
Cv(%)
WAB56‐50
WAB56‐125
WAB377‐B
Peking
WAB56‐50
WAB56‐125
WAB377‐B
Peking
WAB56‐50
WAB56‐125
WAB377‐B
Peking
83.5 a
83.9 a
68.9 abc
81.2 a
91.4 a
64.9 abcd
68.5 abc
75.2 ab
65.7 abcd
45.7 cd
51.7 bcd
39.2 d
20.1
24.5
63.8 a
59.9 ab
40.2 ab
47.6 ab
65.9 a
48.8 ab
44.0 ab
46.4 ab
53.8 ab
54.9 ab
49.1 ab
37.3 ab
25.0
29.7
6.7 c
10.7 bc
7.5 c
10.2 bc
14.0 abc
19.2 ab
22.3 a
15.1 abc
7.4c 7.2c 6.5c 8.8bc 9.2
49.3
134