CHITOSAN-CONTAINING COMPOSITION FOR IMPROVING DISEASE RESISTANCE AND GROWTH OF PLANTS

摘要

There is provided a composition for improving the disease resistance and growth of plants, comprising (A) a chitosan having a molecular weight of 3,000 to 60,000, (B) a chitosan having a molecular weight of 35,000 to 90,000 (provided that the molecular weight of chitosan (A) and the molecular weight of chitosan (B) are different) and (C) a lactic acid and/or a succinic acid. By using the composition of the present invention wherein two kinds of chitosans having different molecular weights, an effect of enhancing stable and high disease resistance and improving growth can be exerted on plants.