Effect of Application of Cattle Slurry on Dry Matter Yield and Nutritive Value of Whole Crop Rice and Water Pollution in Rice Paddy Land
2012
Choi, K.C., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Na, S.P., Konkuk University, Seoul, Republic of Korea | Jung, M.W., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Lim, Y.C., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Kim, M.J., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Kim, M.H., Konkuk University, Seoul, Republic of Korea | Lee, S.L., Konkuk University, Seoul, Republic of Korea | Kim, D.H., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Yook, W.B., Konkuk University, Seoul, Republic of Korea
This study was conducted to investigate the effects of application of cattle slurry on forage productivity and environmental pollution in rice paddy land. Cropping systems used in this study consisted of two designs, such as whole crop rice applied with standard fertilizer (MWRS) and whole crop rice applied with cattle slurry (MWRC). The field experiments were conducted on the clay loam at Backsanmyun, Kimje, Chunlabukdo province in Korea for three years (May 2006 to Apr. 2009). This study was arranged in completely randomized design with three replicates. The yield of dry matter of whole crop rice in MWRS was similar as compared with that of MWRC. The contents of crude protein of whole crop rice in MWRS significantly increased as compared with those of MWRC (P less than 0.05). However, the contents of acid detergent fiber (ADF), neutral detergent fiber (NDF) and total digestible nutrients (TDN) of whole crop rice were hardly influenced by cattle slurry application. The pH, and contents of T-N, P₂O∧5 and organic matter (OM) in soil samples collected at the end of the experiment increased as compared with those at the beginning of the experiment. After the end of experiment, the concentrations of exchangeable cations (Ca, Na, Mg and K) in soil samples collected at the end of the experiment were remarkably higher than those at the beginning of the experiment (P less than 0.05). The concentrations of NO₃-N and NH₄-N in discharge water in MWRS, MWRC and DWBRC were higher in 2008 than those in 2007. But the concentration of PO₄-P in discharge water was hardly influenced by the cropping system during experimental period. The concentrations of NO₃-N, NH₄-N and PO₄-P in leaching water were hardly influenced by application of cattle slurry.
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