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Ecological and socio-economic impacts of modified shifting cultivation in Northeast India
2001
Tiwari, B.K. (North Eastern Univ., Shillong 793014 (India). Centre for Environmental Studies)
[Optimization of operation time of cereal-growing farm machinery according to the profit and profitability of the farm]
2001
Tamm, K. (Estonian Agricultural Univ. (Estonia). Inst. of Agricultural Machinery)
Production of cereals is mostly processed by operating the machinery. Operation of machinery influences the yield, i.e. also the income on one side, but it is also one of the biggest sources of expenses from the other side. Increasing the yearly operation time and amount of work of the machinery leads to decreasing costs per unit. Increasing the yearly amount of work is limited by agrotechnical terms. The crop yield depends on the time and duration of field work, and affects the farm income. The methods and formulae to prognosticate the averageoptimum yearly operation time of farm's machinery, i.e. also farm's cereal-growing area was composed by the author, concerning biological, technical and economical factors and relations, affecting cereal production. Farm profit and profitability were used as optimization criteria.
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