Derris Agronomy an Annotated Bibliography and a Critical Review Part I

Abstract

With the increasing appreciation of the rotenone-containing plants as insecticides, derris is a minor crop that was annually gaining importance up till the end of 1941. Then within the space of a few months, almost the whole of the world sources fell to the Japanese, The American (United States) market, which was the largest consumer, had been mainly supplied from Malaya, the United Kingdom from the same source, Holland and the other continental users from Java and Sumatra. Practically the only other exporting country, on an altogether smaller scale, was the Philippines. Japan had developed an industry, for her own requirements in Formosa.