| 摘要 |
PURPOSE: A composition for preventing a Phytophthora rot produced from Oomycetes is provided which can prevent and cure plants of the Phytophthora rot and does not cause an environmental pollution. CONSTITUTION: The composition is produced by mixing phosphorous acid dissolved in water and alkali for making pH 5-8 condition in a weight percent ratio of 1:0.5-1. The alkali is potassium hydroxide, sodium hydroxide, calcium hydroxide. |
