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全北地方 矮性 사과園의 主要無機養分 含量變化에 관한 硏究
吳成都,鄭東植,許康錫 전북대학교 농업과학기술연구소 1984 農大論文集 Vol.15 No.-
Leaves and soil were sampled and analyzed for investigating yearly changes of the nutritional condition in dwarfed apple tree (Halus domestica Borkh) orchards in Jeobug area of Korea during 1979 through 1983. N was very low in both 1979 and 1980, but was leveled up to normal content from 1981. P showed normal content but was higher in Starkrimson than in Fuji. Ca was low in both 1979 and 1980 but it showed normal content after 1981, while Mg was a little higher but leveled down after 1981. Mg showed differences when compared with Ca. In soil chemical properties little changes in soil pH and organic matter was found but available P, K, Ca and Mg were changed similar to that of leaves. Dwarfed apple tree orchards in Jeonbug area showed a little poor condition in mineral nutrient but from 1981 the mineral content in leaves and soil was placed in normal condition.