Studies on productivity and nutrient quality of forage rape (Brassica napus Subsp. oleifera). 2; effects of fertilizer levels on growth characteristics, dry matter yield and nutrient quality of forage rape.
1989
Ahn, G.S. | Kwon, B.S. (Sunchon National Univ., Sunchon (Korea R.))
To find out the optimum fertilizer level for high yielding variety, Akels, experiment was conducted with 18 compositions of fertilizer levels at the experiment field of forage crop in Sunchon National University from Sep. 1987 to May 1988. The effects of nitrogen fertilizer on plant growth were large but increasing rate of application in potassium and phosphate fertilizers above 8kg/10a had negligible effects on plant growth. Raising nitrogen application rate up to 15kg/10a increased dry matter yield linearly. However, at high nitrogen application rate 20kg/10a, plants were too leafy and parts of leaves deceased, so that dry matter yield decreased. The optimum application rate of fertilizers turned out to be 15-8-8kg/10a of N-P2O5-K2O. Content of crude protein was highest and that of crude fiber such as NDF, ADF, cellulose and lignin were lowest at this rate. Furthermore, IVDMD was high and dry matter yield and digestible dry matter yield were highest at the optimum rate
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