Abstract
Growth and Yield Response of Three Sorghum Varieties (Sorghum bicolor (L.) Moench) on Different Soil Tillage. The aim of this research was to compare growth and yield of three varieties of sorghum on different soil tillage. It was conducted at Pasar 1, Tanjung Sari, Medan about 25 m above sea level on June to October 2012 by using Split Plot Design with two factors. The first factor was sorghum variety (Sangkur, Kawali, Numbu) and the second one were different soil tillage (no tillage, once tillage, twice tillage). The research land had sandy loam soil texture. The results of research showed that growth and yield of Sangkur, Kawali, and Numbu weren’t effected by soil tillage treatment but without tillage treatment showed the best result. Numbu had better result on shoot dry weight (59.29%), biomass weight (59.37%), root volume (64.83%), yield per sample (59.42%), and 1000 grains weight (56.83%) compared with other varieties. The interaction between sorghum variety and different soil tillage had no significantly effect on growth and yield of sorghum. Key words : Sorghum, variety, soil tillage, growth, yield
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