Effects of cattle manure and/or chemical fertilizer on yields and nutritive values of king Napier grass (Pennisetum purpureum cv. king grass) under irrigation (Thai)

摘要

The aim of this field experiment was to investigate the effects of cattle manure and/or chemical fertilizer on yields and nutritive values of King napier grass ( Pennisetum purpureum cv. King grass) grown under sprinkler irrigation at Khon Kaen Animal Nutrition Research and Development Center. The experiment was designed as a Randomized Complete Block Design with 4 replications. The experimental treatments consisted of 5 different methods of fertilizer application: T1 (100 kg/rai of chemical fertilizer 15-15-15 as basal fertilizer + 20 kg/rai of urea after cutting), T2 (2,000 kg/rai of cattle manure), T3 (4,000 kg/rai of cattle manure), T4 (2,000 kg/rai of cattle manure + 20 kg/rai of urea after cutting) and T5 (4,000 kg/rai of cattle manure + 20 kg/rai of urea after cutting). The results showed that the total dry matter yields (TDMY) and the average dry matter yields (DMY) were significantly different (p<0.05) among treatments (8,817.4, 9,159.3, 9,615.6, 9,512.9 and 10,134.3 kg/rai/year; 801.5, 832.7, 874.1, 865.4 and 921.3 kg/rai/cut, respectively). The CP, ADF, NDF and DMD were highly significant differences (p<0.01) among treatments. The T5 tended to be given the maximum TDMY and DMY of 10,134.3 kg/rai/year and 921.3 kg/rai/cut, respectively.