laboratory test for different designs of feeding mechanism of subsoil manuring machine

"Laboratory experiment was carried out at the Department of farm Machinery / college of Agriculture, in order to study the effect of the types of feeding arms (straight arms, Lshaped arm, and arched arms) and tractor engine speed (600, 1200, 1800) rpm on some performance properties included manure discharge rate, manure quantity per hectare and machine productivity. All tests were conducted according to the complete randomized bolck design with three replicates. The results showed an increase in fertilizer discharge rate, manure quantity per hectare and productivity of the machine while increasing engine speed. The feeding mechanism with L-shaped arm was superior to other designs which gave the highest values for the manure discharge rate, the amount of manure per hectare and the productivity of the machine as compared to the feeding mechanism with straight and arched arms"