Energetics of cotton agronomy
1992; Elsevier BV; Volume: 17; Issue: 5 Linguagem: Inglês
10.1016/0360-5442(92)90085-e
ISSN1873-6785
AutoresA.R. Rao, Deepika Nehra, Dharmendra Singh, M. S. Kairon,
Tópico(s)Greenhouse Technology and Climate Control
ResumoAgronomic data from a sample hectare of cotton-growing area of our farm were examined for energy inputs, outputs and balance for comparison with monetary values. Mechanized fanning consumed about 45% of the energy inputs and accounted for about 20% of the expenses. The major cost (53%) was for manpower, which accounted for about 5% of the energy inputs. Irrigation consumed about 30% of the energy inputs but cost only 1%. Fertilizers cost about 6% and accounted for about 12% of energy inputs. Insecticide use consumed under 6% of the energy used but cost about 16%. The total energy inputs were 10,475 Mcal and resulted in an output of 30,107 Mcal, a gain of a factor of 2.87. Cotton sticks provided about double the entire needed energy inputs.
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