Effects of Drainage Depths on Agronomic Characteristics, Yield and Feed Value of Silage Corn Hybrid in Paddy Field of Lowland
2015
Sang Moo LeeDepartment of Animal Science, Kyungpook National University, Sangju-Si 742-711, KoreaABSTRACTThis study was carried out to investigate the growth characteristics, yield, and chemical compositions of corn hybrids for silage according to the drainage depths in a lowland paddy field. The experimental design was arranged in a randomized block design with four treatments and three replications. The drainage depths of the four treatments were 0cm, 20cm, 30cm and 50cm. Tip-filling degree, ear length, and ear circle were higher in the 30cm and 50cm treatments compared with the other treatments (p 0cm>50cm>30cm treatment. The fresh yield, dry matter yield, and TDN yield increased as the drainage depth increased(p 30cm>20cm>50cm treatment(p<0.05). Fructose, glucose, and sucrose were highest in the 20cm treatment. The total amino-acid(EAA+NEAA) content was the highest in the 50cm treatment. Based on these results, greater drainage depths increased the yield and feed value of silage corn.(Key words :Silage corn, Drainage depth, Yield, Nutritional components)
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