Utilization of By-product from Ethanol Factory on Growth, Yield and Yield Components of Cassava Planted in Kamphaeng Saen Soil Series

Abstract

The effects of by-products from ethanol factory (spent wash liquor (SWL) and treated waste water (TWW)) on growth, yield and yield components of cassava (var. Huay Bong 60) planted in Kamphaeng Saen soil series was investigated. The experimental design was Randomized Complete Block (RCBD) consisting of 11 treatments and 3 replications. The results revealed that the application of chemical fertilizer based on soil chemical analysis (CF_DOA) in combination with SWL of 20 m³/rai and TWW of 20 m³/rai (CF_DOA+SWL_{20 m3}+TWW_{20 m3}, T₁₀) provided the highest plant height, average weight/root and root width which were not significantly different from the application of CF_DOA in combination with SWL of 10 m³/rai and TWW of 10 m³/rai (CF_DOA+SWL_{10 m3}+TWW_{10 m3}, T₉) and the application of CF_DOA in combination with SWL of 20 m³/rai (CF_DOA+SWL_{20 m3}, T₃). Furthermore, the CF_DOA+SWL_{20 m3}+TWW_{20 m3} (T₁₀) gave the highest fresh root yield and starch content which were not significantly different from the CF_DOA+SWL_{10 m3}+TWW_{10 m3} (T₉), the CF_DOA+SWL_{20 m3} (T₃), the application of CF_DOA in combination with SWL of 40 m³/rai and TWW of 40 m³/rai (CF_DOA+SWL_{40 m3}+TWW_{40 m3}, T₁₁), the application of CF_DOA in combination with SWL of 40 m³/rai (CF_DOA+SWL_{40 m3}, T₄), the application of CF_DOA in combination with TWW of 80 and 40 m³/rai (CF_DOA+TWW_{80 m3} (T₈) and CF_DOA+TWW_{40 m3} (T₇)). The CF_DOA+SWL_{20 m3}+TWW_{20 m3} (T₁₀) provided the highest starch yield/unit area, concentration of P and K in fresh root which were not significantly different from the CF_DOA+SWL_{10 m3}+TWW_{10 m3} (T₉).