Abstract
The rice plants cv. Koshihikari were planted in 1/2000 are pots with three or four hills in four different hill arrangements. The objectives of this experiment were to clarify : (1) bending angles of culms at ripening and/or maturity stages, (2) spreads of culms in hills and (3) curving patterns of the most windward culms, conducting under various wind treatments. The results were as follows: 1) Bending angles were very small at ripening stage where major axes of three hills planted in a straight line were parallel to wind, and also small at maturity stage where major axes of hills were at right angle to wind. 2) Spreads of rice culms were likely to decrease at maturity stage where major axes were parallel or right to wind. 3) The curves drawn by the most windward culms with increasing wind speeds were approximated by quadratic equations.
