Back U. R. Sangakkara and A. M. U. Attanayake
Department of Crop Science, University of Peradeniya, Sri Lanka
Full Paper (PDF File: 100KB)
Abstract
The effect of solutions of Effective Microorganisms (EM 4) on the germination and seedling growth of rice was studied in laboratory experiments. Freshly harvested seeds of two varieties were sown on germination paper and in sand, using either distilled water, a concentrated solution of EM 4 or dilutions of EM 4 to moisten the substrate. Germination, seedling characteristics, and shoot and root dry weights were evaluated. The concentrated EM solutions had a toxic effect on seed germination and seedling growth. Thus, the percentage of dead seeds and abnormal seedlings increased with this treatment. The concentrated solution also reduced shoot and root dry weights. Dilute solutions of EM 4 had a beneficial effect on all measured parameters. The best germination, seedling characteristics and growth occurred with EM 4 applied after dilution of 1:500 with water. The results are presented in terms of the usefulness of EM 4 in enhancing germination and seedling growth of rice, a crop planted exclusively with seed.