Effects of Liquid Pig Manure Application on Rice Growth and Environment of Paddy Soil
2003
Jeon, W.T. | Park, H.M. | Park, C.Y. | Park, K.D. | Cho, Y.S. | Yun, E.S. | Kang, U.G. (RDA, Milyang, Republic of Korea)
This experiment was carried out to improve the utilization of liquid pig manure (LPM) for rice at the two texture of valley soil in 2000 and 2001. The soil texture were coarse loamy and fine loamy in Sachon and Jisan series, respectively. Treatments consisted of no fertilized plot, chemical fertilized plot, LPM 150%, LPM 100%, LPM 100%+NK (top dressing) 30%, LPM 70% +NK 30%, LPM 50%+NK 50% plot. LPM was applied as basal fertilizer compare to nitrogen of chemical fertilized plot. Total N contents in the LPM were 6.0 and 4.5 g kg-1 in 2000 and 2001, respectively . After the experiment, P and K contents of soils were not difference between chemical and LPM¡¡application plots. But heavy metal contents in soils were slightly higher in LPM¡¡application liots than in chemical fertilized plot. Immediately after LPM application, ammonia has content was 18 mg kg-1 in LPM 150% plot, but it was 3 mg kg-1 in LPM 50% plot.
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