Effect of soil-ameliorator mixtures on nutrient leaching in sandy paddy soil
1987
An, S.B. | Park, J.K. | Yeon, B.Y. (Rural Development Administration, Suwon (Korea R.). Agricultural Sciences Inst.) | Yuk, C.S. (Chungbuk National Univ., Chongju (Korea R.). Coll. of Agriculture)
Addition of red earth and compost to soils decreased pronouncedly the permeability. Relative magnitude of permeability was compost + slag + red earth compost + red earth compost red earth compost + slag slag non-added soil. Concentration and leaching loss of NH4-N and SiO2 were high by addition of compost-slag or red earth mixture to soils. The presence of these nutrients in soils after the experiment was, also, higher than that in non-added soil and in red earth to soils. Those of K, Ca, and Mg were similar to NH4-N and SiO2. Especially, leaching loss and presence of K in soils by addition of compost to soils were higher drastically th1312an those of non-added soil and of red earth to soils. Those of Fe++ in non-added soil were much higher than those by addition of compost and slag to soils. These values were the highest in 12 days after submergence, while those of Mn++ the lowest. Concentration of NH4-N was high by addition of compost to soils, while the presence of it in soils after the experiment was tended to be cont
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