Effects of Potassium Supply on Growth and Yield of Safflower as Compared to Sunflower as Compared to Sunflower

Impacts of potassium (K) supply on growth, yield and quality of safflower and sunflower under semicontrolled conditions are compared. Both crops respond strongly to vary K supply, resulting in reduced vegetative growth and yield under conditions of limited K supply, and the response of sunflower is...

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Bibliographic Details
Published in:Journal of plant nutrition and soil science 2008-04, Vol.171 (2), p.270-270
Main Authors: Abbadi, Jehad, Gerendas, Joska, Sattelmacher, Burkhard
Format: Article
Language:English
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Summary:Impacts of potassium (K) supply on growth, yield and quality of safflower and sunflower under semicontrolled conditions are compared. Both crops respond strongly to vary K supply, resulting in reduced vegetative growth and yield under conditions of limited K supply, and the response of sunflower is particularly strong. Several traits are particularly important in the yield response of the crops to K. In sunflower, the stem dry matter (DM) and the total amount of K accumulated in the aboveground biomass is found to be most important, while in safflower, the total amount of K and nitrogen (N) accumulated shows the highest standardized partial-regression coefficients. It may be concluded that sunflower is more sensitive to inadequate K supply than safflower.
ISSN:1436-8730