Mechanical Weed Control Methods on Soybean Field

Abstract

The effects of mechanical weeding with the steerage hoe having shovels were compared for the several different depth, distance from the crops and times of cultivation on the soybean field in 1972.
The cultivation was more effective in 5-8cm than 2cm in depth of cultivation, in 5cm than 10cm distant from the crops and in 3 times than 1 or 2 times of cultivation.
The best result in this experiment was obtained by the cultivation which was repeated 3 times at intervals of 10 days, at 8cm deep and 5cm distance from the crops.