Abstract
In order to reveal the effect of growth control of wheat, we have reseached the wheat-repressing by the roller at the farm of the Kyushu University.
Experimental items are zero, one, three snd five times repression by the flat roller (28kg and 13kg), culti-packer (13kg), and eight square type roller (13kg) and also human power repression (common method).
According to result of field experiment, we found that the degree of shortening of the wheat lengh and increase of the stalk number, when used the repressing-roller, is larger than human power repression.
As regards the roller for wheat-repressing, on time repression by the flat roller (20-25kg) or two-three times repression by the culti-packer (13-15kg) is better than the others.
