Abstract
Owing to lodging, adjustment of utilization period is not easy in high yield cultivation of soiling winter oats. Considering this fact, some number of tests were conducted to stabilize utilization period of the crop by controling the lodging. In variety comparison test, high yielding varieties were shown to be apt naturally to lodge and a lodging stable varity found was "Zenshin (Onward)". When the lodging was neglected as soiling oats, variety "Hoyo" might be most suitable one because of its softness of leaves and stems and of its high productivity. Mixed cultivation of lodging resistant variety and nonresistant high yielding variety showed favorable result. Mixed sowing of 0.3kg/a each of "Zenshin" and "Hoyo" gave higher yield as well as the lowest lodging rate. In the above mentioned varietal combination, as the distance between plants should be even, it might be desirable to sow seeds twice on the same row.
