Effects of decapitation on growth, uptake and distribution of potassium in tobacco

Abstract

Abstract: Compared with intact plants, decapitation did not cause increase in dry weight of tobacco plant and in potassium accumulation8 weeks after the treatment. In intact plants, about 1/3 of assimilation and potassium were transported into the top, and only about 1/3 of those deposited in the leaves. Decapitation resulted in about 1/2 of assimilation and potassium distributing in the leaves, so it was more effective. Application of NAAon the stump of the stem did not influence leaves yields, but accumulation of potassium in the upper and middle leaves was enhanced.

Key words: Decapitation, Flue cured tobacco, NAA, Potassium, soil fertility, sandy fluvo-aquic soil, composted sewage sludge, soil active organic nitrogen.

CLC Number:

S572

GUO Lizhuo, ZHANG Fusuo, LI Chunjian . Effects of decapitation on growth, uptake and distribution of potassium in tobacco[J]. Chinese Journal of Applied Ecology, 2002, (7): 819-822.

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