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KMID : 0352719770020010035
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Journal of Ginseng Research
1977 Volume.2 No. 1 p.35 ~ p.57
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Studies on the Uptake on Mineral Nutrients by Ginseng Plant
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Kim, JoonHo/김준호
Moon, HyungTae/Chae, MyungIn/문형태/채명인
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Abstract
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Seasonal absorption of inorganic nutrients and dry matter production
studied with four-year-old ginseng plant. The residuary amounts of the nu,
supplied to ginseng plantation were decreased with time elapsed. The deers DSTECH0981 49 rate was greater in chemical plots than in Yacto plots. The amounts of manure applied in this current year and growth in dry matter production of ginseng showed no signficant difference. The amounts of mineral nutrients per unit dry matter were proportional to the amounts of supplied with chemical fertilizer in the early period of growing season but with Yacto in the late season of growing. Seasonal changes of nitrogen, phosphorus and potassium contents per unit dry weight in each organ were high in the middle of May. They decreased sharply in the middle of June and then slowly decreased in both leaves and stems but gradually increased in roots. The absorption ratio of nitrogen to phosphorus (NIP) was high, and that of nitrogen to potassium(N/K) was low. The amounts of nitrogen, phosphorus and potassium in leaves became lower with increasing the relative light intensity, but in stems, the concentrations were different with the kind of mineral nutrients. The requisite amounts of mineral nutrient of ginseng plant were 8.3^9.9 kg of nitrogen, ´. 2^1.5 kg of phosphorus, 6.4^7.9 kg of potassium per 10 a for five years.
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