Phosphate Uptake and Distribution in Bush Bean Plants as Affected by Foliar Application of Naphthenate
1973
Severson, John G. | Wort, D. J.
A 0.5% solution of potassium naphthenates (KNap) was applied to the foliage of hydroponically grown 14- day-old bush bean (Phaseolus vuigaris L., cultivar ‘Top Crop’) plants to determine the effect of this chemical mixture on the uptake and distribution of root-fed ³²P among leaf blade, stem, and root tissues. The plants were grown in eiither a phosphate-free (−P plants) or complete nutrient solution. The uptake of ³²P was not changed by KNap treatment. The percentage distribution of ³²P among the various plant organs, however, was markedly affected by the presence or absence of phosphate in the nutrient solution and by treatment. The enhanced translocation of ³²P observed, especially in −P plants, may be associated in a casual way with the characteristic stimulation of metabolic processes in the aerial portions of naphthenate-treated plants.
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