1997 Volume 22 Issue 2 Pages 90-94
When the controlled release granule of SSF-126, (E)-2-methoxyimino-N-methyl-2-(2-phenoxyphenyl)acetamide, was applied to a paddy field, the increases of SSF-126 concentration in the paddy water, paddy soil and rice plants were slower in the earlier stage and the decreases in the later stage were also slower, as compared with those of the non-controlled release granule which was made by extrusion and generally used in Japan. The concentration of SSF-126 became relatively higher on about the 10th day in paddy water, on the 40th day in water at 5cm deep in paddy soil, on the 72nd day in water at 10cm deep in paddy soil and on the 20-35th day in rice plants after application than those of non-controlled release one. These results suggested that the SSF-126 concentration in rice plants could be controlled by formulation, and gave a hint that the higher residual activity against rice blast could be obtained by using the controlled release granules of SSF-126.
