Influence of nitrogen compounds on aryloxyphenoxypropionate herbicides phytotoxicity

摘要

Influence of nitrogen salts on activity of aryloxyphenoxypropionate herbicides was investigated. In a greenhouse experiments is shown, that the addition of ammonium salts to solutions for spraying raises aryloxyphenoxypropionate activity, applied in the lowered dozes. At entering of high dozes of aryloxyphenoxypropionate compounds authentic amplification of activity is not marked. The adding of nitrogen salts before planting in dozes up to 20 mg N per pot results in some reduction of propionate derivatives activity. The increase of a nitrogen nutrition level up to 100 mg N per pot and above results in significant increase of herbicide activity.