A field test was done to reveal the dynamics of pencycuron residue in cotton and soil, respectively. 100 kg cotton seeds were mixed with 75—112.5 g (a.i) pencycuron to prevent and cure cotton－seedling diseases. It was discovered that Pencycuron in soil was decomposed slowly with its half－lives were 7.8—10.1 days, while 90％ of pencycuron was not decomposed after 35 days of treatment. The residue of pencycuron in cotton leaf、 cotton seed and soil samples were not detected at harvest period
没有评论:
发表评论