UTILIzING BIO – EXTRACTED WATER fROM COCONUT WATER IN EACH LEVEL AS PLANT SUPPLEMENT fOR SOYBEAN PLANTATION

Abstract

Utilizing bio – extracted water from coconut water in each level as plant supplement for soybean plantation was aimed at investigating and comparing growth, yield and yield components of the soybean. The bio – extracted water was use as plant supplements and also investigating chemical characteristics of soil nutrient quantity in soil and heavy metals contaminated in soil that were lead, cadmium and mercury. The soybean of C.M. 60 cultivar was used as a sample and was experimented from August to December, 2010 in Mae-Sod district, Tak province. A completely randomized design was used in this study as seven treatments with 4 replications. The seven treatment included the bio –extracted water and water of 0 : 100, 25.0 : 75.0, 50.0 : 50.0, 75.0 : 25.0, 100 : 0, chemical fertilizer formula 12.0 – 24.0 – 12.0 and control group. The results showed that the bio – extracted water in ratio between coconut water and water of 100 : 0 gave the highest production in terms of stem and leave growth, yield and yield component as compared with other treatments. Although a chemical fertilizer gave better production of the soybean than the bio-extracted water, but the bio-extracted was capable of improving soil structure and decreasing heavy metal accumulated in contaminated soil in a long-term.