Controlled release of seed and soil treatments triggered by pH change of growing media

摘要

The invention features a method of improving the growth of a plant, involving applying to a seed or locus thereof a composition comprising an active ingredient and a pH-dependent film-forming polymer, followed by exposing the composition to an appropriate pH to release said active ingredient. The invention further features a seed including a composition having a) an active ingredient; and b) a pH-dependent film-forming polymer. Additionally, the invention features a seed treatment composition that includes a) an agrochemical; b) a pH-dependent film-forming polymer; and c) a seed coating agent.