Four farmers cooperatively take care of a 2 hectare farm that was awarded to them through the Agrarian Reform Program of the government. Initially, they have to clear the land of bushes and shrubs/ scrubs, make ridges, before finally planting cassava. How many days would they need to complete each tasks? How much power would be consumed in everyy activity (KVW-hr)? Assume that the farmers work 8 hours a day including rest periods.

Rest Period

Tr = 60(1-250/P)
whereas:
Tr = required rest period, min/hr of work
P = actual rate of energy in consumption in watts.

Hand Tool Technology Table 1.1. Human Power Consumption for Various Farming Activities Activity Clearing bush and scrub Felling trees Hoeing Ridging, deep digging Planting Plowing with animal draft Driving single axle tractors Driving 4-wheel tractor Driving car on farm Gross power consumed (Watts) D 400-600 600 300-500 400-1000 200-300 350-550 350-650 150-350 150 Source: mainly from Dumin and Passmore, 1967. Energy, work and leisure. Heineman as given by Inns (1992).