Abstract

Treatment of seeds for the control of sced-borne diseases dates back to about two centuries. Several chemical seed dressings have been in vogue since. With the development of organo-mercurials by Riehm (1913) these came to be widely used against several seed-borne diseases below... Seed treatment can also be used against seed spoilage organisms. In the comparative evaluation of the efficacy of seed dressing chemicals, it is necessary to apply the chemicals uniformly and evenly to the seed surface. The evenness and uniformity of deposition on them could be evaluated by the bioassay techniques such as that of Mead (1945) with some modifications as described below.

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