81006548

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Version of Record

ニョウソ エキチュウ ニオケル ヨウメン ニョウソ キュウシュウ ニョウソ ヨウメン ショリ ノ キソテキ ケンキュウ ダイ3ホウ

Absorption of Urea by the Radish Leaves Immersed in Urea Solution : Contribution to the foliar spray of urea, 3

Japanese (日本語)

兵庫農科大學研究報告. 農学編

3(1)

50-54

兵庫農科大学

1957

2014-06-11

The intact radish leaves, not removed from the roots, were immersed in the urea solutions and the leaf absorption of urea was determined. Total absorption increased with increasing concentration of urea and increasing immersion hours and the shorter the time interval, the greater the rate of absorption. From these results it is assumed that the absorption process of the leaves immersed in urea solutions is similar to that in the case of foliar sprays, and that urea is for the most part passively absorbed by the leaves with the gradient of its concentration. In the immersion method, however, water makes the leaf cuticle swell, which has the effect of increasing the permeability of the cuticle to urea. In order to ascertain whether active absorption takes place, the experiments were carried out on effects of 2,4-dinitrophenol on the leaf absorption of urea, Not any significant effect was observed. But further experiments are needed for reaching conclusion of this problem as it is questioned if DNP could permeate the leaf cuticle in the present experimnt.

紀要論文