We tried to develop a novel easy-to-use labor-saving formulation. And we have developed the "MAMETSUBU" formulation for paddy fields. This formulation has 3 to 8 mm diameters and disperses on the surface of water. This is a highly labor-saving formulation that can be applied from the levees by various methods without the necessity of stepping into the paddy fields. The conditions that disturb diffusion of an active ingredient in the "MAMETSUBU" formulation often changes. Therefore, spreading property of an active ingredient in the formulations was evaluated not only in small experimental fields but also in the actual paddy fields. In all of the experiments, the spreading property of the active ingredient was found sufficient enough for the formulations to be practically used. The conditions of paddy fields are usually not the same, but the "MAMETSUBU" formulation is a new formulation that can be reasonably applied.
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