Effect of cutting interval and cutting height on yield and nutritive value os Setaria sphacelata CPI 15899 under irrigation
2003
Lakana Vuthiprach-umpai(Department of Livestock Development, Bangkok (Thailand). Division of Animal Nutrition. Chainat Animal Nutrition Research and Development Center) | Wirapon Phunphiphat(Department of Livestock Development, Bangkok (Thailand). Division of Animal Nutrition. Lampang Animal Nutrition Research and Development Center) | Prawphun Chuchuay(Department of Livestock Development, Bangkok (Thailand). Division of Animal Nutrition. Animal Nutrition and Forage Crop Laboratory) | Anukit Khuamangkorn(Department of Livestock Development, Bangkok (Thailand). Division of Animal Nutrition. Phichit Animal Nutrition Development Station)
Study on the effect of cutting interval and cutting height on yield and nutritive value of Setaria sphacelata CPI 15899 has been conduct at Chainat Animal Nutrition Research Center between 1998-2000. Split plot in RCBD was use with 4 replications. Main consisted of 3 rates of cutting height 5, 10 and 15 cm and the sub plot consisted of 3 rates of cutting intervals 30, 45 and 60 days. The result show that average dry matter yield in two year obtained from 5 and 10 cm cutting height (3,484 and 3,258 kg/rai, respectively) were higher than 15 cm (2,858 kg/rai). And gave protein yield at 5 and 10 cm cutting height (283 and 276 kg/rai, respectively) (P GT 0.05) were higher than 15 cm (240 kg/rai). Dry matter yield at the 60 day cutting interval gave the highest (3,495 kg/rai). Dry matter yield at the 45 and 30 day cutting interval were 3220 and 2884 kg/rai, respectively (P LT 0.05). Protein yield at the 30, 45 and 60 day cutting interval were 268, 266 and 264 kg/rai, respectively (P GT 0.05). In term of forage quality the chemical composition of cutting height showed very little effect on forage quality. Cutting at every 30, 45 and 60 days gave 9.1, 8.1 and 7.4 percent crude protein content. (P LT 0.05). So that we should to cutting height at 5 and 10 cm from ground level and cutting interval at 30 days which gave high of protein yield.
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