Comparative Study on Productivity and Nutritive Value of Maize and 3 Sweet Sorghum Varieties

Abstract

The study on productivity and nutritive values of 3 varieties of sweet sorghum (Sorghum bicolor (Linn) Moench) (Wray, Cowley and Keller) compared with maize variety Nakhon Sawan 3 were cut at age 60, 75 and 90 days. The results showed that the total dry matter yields of the sweet sorghum and maize,  significantly increased with an increase cutting age. Wray variety had the highest dry matter which average of  60, 75 and 90 days were 114.48, 134.91 and 202.10 gram per plant Respectively,  followed by Keller sweet sorghum, Nakhon Sawan 3 and Cowley sweet sorghum. However, the average dry matter of Nakhon Sawan 3 variety were not significantly. different from Cowley sweet sorghum variety. It was found that Wray had the highest protein content (13.24 %) when harvested at the age of 60 days. The protein content decreased significantly when cutting age increased with the average of highest crude fiber content 25.05 %. The crude fiber content as well as the NDF and ADF values of sweet sorghum and maize increased as plants grew older. Wray sweet sorghum variety at the cutting age of 60 days is therefore the most suitable in terms of yield and nutritional quality.