Table 13.5
Yield, economics and energy comparison for different methods of fertilizer application
Treatment
Yield
(kg ha
À1
)
Net
benefit
(Rs.)
B:C
ratio
Energy input (MJ)
Energy
output (MJ)
Net energy
benefit (MJ)
Energy
efficiency
Renewable
Nonrenewable Total
T1-Farmer method: 150–50–50
NPK kg/ha
7424
44,544
2.50
1742
55,179
56,920 193,451
136,530
3.40
T2-TNAU RDF: 250–75–75
NPK kg/ha
8542
51,572
2.52
1742
61,684
63,556 24,3112
179,556
3.83
T3-IPNI-SSNM: 150–47–29
NPK kg/ha
6436
35,816
2.25
1742
55,003
56,745 185,379
128,633
3.27
T4-IPNI-Nutrient Expert
180–115–160 NPK kg/ha
8136
49,796
2.58
1742
58,500
60,242 215,973
155,731
3.59
T5-Control-No fertilizer
3240
11,188
1.52
1601
45,003
46,604
97,070
50,466
2.08
300
G. Dheebakaran et al.
Yield, economics and energy comparison for different methods of fertilizer application
Treatment
Yield
(kg ha
À1
)
Net
benefit
(Rs.)
B:C
ratio
Energy input (MJ)
Energy
output (MJ)
Net energy
benefit (MJ)
Energy
efficiency
Renewable
Nonrenewable Total
T1-Farmer method: 150–50–50
NPK kg/ha
7424
44,544
2.50
1742
55,179
56,920 193,451
136,530
3.40
T2-TNAU RDF: 250–75–75
NPK kg/ha
8542
51,572
2.52
1742
61,684
63,556 24,3112
179,556
3.83
T3-IPNI-SSNM: 150–47–29
NPK kg/ha
6436
35,816
2.25
1742
55,003
56,745 185,379
128,633
3.27
T4-IPNI-Nutrient Expert
180–115–160 NPK kg/ha
8136
49,796
2.58
1742
58,500
60,242 215,973
155,731
3.59
T5-Control-No fertilizer
3240
11,188
1.52
1601
45,003
46,604
97,070
50,466
2.08
300
G. Dheebakaran et al.