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http://dx.doi.org/10.5333/KGFS.2015.35.2.87

Effect of Seeding Methods and Nitrogen Fertilizer Rates on the Forage Quality and Productivity of Whole Crop Rice  

Kim, Jong Geun (Graduate School of International Agricultural Technology, Seoul National University)
Park, Hyung Soo (Grassland & Forages Division, National Institute of Animal Science)
Lee, Sang Hoon (Grassland & Forages Division, National Institute of Animal Science)
Jung, Jeong Sung (Grassland & Forages Division, National Institute of Animal Science)
Ko, Han Jong (Korea National Open University)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.35, no.2, 2015 , pp. 87-92 More about this Journal
Abstract
This experiment was conducted to evaluate the effect of seeding methods and application levels of nitrogen fertilizer on the yield and forage quality of whole crop rice (WCR). The WCR variety "Namil" was directly seeded on April 25 and transplanted on May 25. Five levels of nitrogen fertilizer were applied (90, 110, 140, 170 and 200 kg/ha). There were no significant differences (p<0.05) of the emergence date, heading date and disease resistance based on the nitrogen fertilizer rates; however, the WCR became dark at higher nitrogen fertilizer rates. The plant height increased at higher nitrogen fertilizer rates and the tiller number showed the same trend. In contrast to a direct seeding method, transplanting increased the tiller number. The dry matter (DM) content did not show a certain tendency based on nitrogen fertilizer rates, while the fresh and dry matter yields increased with incremental changes of the nitrogen fertilizer rates (p<0.01), and the transplant method increased the yield size. In yield analysis, the plot direct-seeded with 140 kg N/ha and the transplanting with 170kg N/ha showed the highest yields. The crude protein (CP) content increased with higher nitrogen fertilizer rate, but there was no significant differences between transplant and direct-seeding methods. The content of ADF (acid detergent fiber) and NDF (neutral detergent fiber) increased with higher nitrogen fertilizer rate, but total digestible nutrient (TDN) content decreased with increased nitrogen levels. Although high nitrogen applications increased the fresh and DM yields, the 140 kg/ha nitrogen fertilizer level is recommended as the proper nitrogen fertilizer level, considering both yield and the environments.
Keywords
Whole crop rice; Transplanting; Direct-seeding; Nitrogen fertilizer; Productivity;
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Times Cited By KSCI : 9  (Citation Analysis)
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