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KMID : 1098419930010010070
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Korean Journal of Medicinal Crop Science
1993 Volume.1 No. 1 p.70 ~ p.73
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Effects of Planting Density on Plant Growth and Tuber Yield of Rehmannia glutinsoa
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송인규/Song, In Kyu
김준호/조진태/홍유기/최인식/박성규/박종귀/Kim, Jun Ho/Cho, Jin Tae/Hong, Yu Ki/Choi, In Sik/Park, Song Kyu/Park, Jong Kooi
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Abstract
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This experiment was carried out to investigate the effect of planting density on thegrowth and yield of Rehmannia glutinosa. A local variety was planted on the 100cm row, with different planting density of 20, 30 and 40 plants per m2. Nitrogen, phosporus and potassium fertilizers were applied as 12, 12, and 16 kg /10a, respectively with compost of 1,000kg /10a. Plant height became shorter with increase in the planting density from 20 to 40 plants/m2. But emergence date, leaf length and width were not significantly changed with planting density. As the planting density was increased, tuber diameter got slender and tuber number was decreased, but tuber length was not affected. The tuber yield was 793kg /10a at the planting density of 20 plants/m2 and it increased 40% at 30 plants/m2 and 45% at 40 plants/m2 Regarding on the farmer's income, optimum planting density was estimated 30 plants/m2.
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