Effect of calcium application on the growth of sweet potato (Ipomoea batatas Lam. ) plant
2003
Sulaiman, H. (Kagoshima Univ. (Japan). Laboratory of Plant Nutrition) | Sasaki, O. | Shimotashiro, T. | Chishaki, N. | Inanaga, S.
The effect of calcium application on the growth of sweet potatoes plant (Ipomoea batatas Lam. var Beniotome and Benisatsuma) grown on river-sand with three Ca levels; (low, medium and high treatments) we studied. The tops (leaves and stems), roots and tuberous root weights of both varieties decreased with the increase of the Ca level. The long and narrow tuberous roots were developed in Beniotome as a result of the calcium addition, while the tuberous roots were narrow in Benisatsuma. The content of calcium, total sugar and crude starch in all of the plant parts increased with the increase of the Ca level, but the potassium content of those decreased. In every treatment, the calcium content and amount of the tuberous roots were higher in Beniotome than in Benisatsuma. These results indicate that calcium affects the quality of a sweet potato and that there is a difference in a response for calcium in a tuberous root between both varieties.
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