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Asian Journal of Plant Sciences
Year: 2006  |  Volume: 5  |  Issue: 6  |  Page No.: 963 - 969

Influence of Boron on the Concentration and Uptake of Anions by Radish (Raphanus sativus L.)

M. Tariq and C.J.B. Mott    

Abstract: The present study was based on the hypothesis that B has a retarding influence on the accumulation of anions in plants. A study was carried out to assess the influence of B on the concentration and uptake of anions in radish (cv. French breakfast) crop, using sand culture technique, under green house conditions. The experiment was laid out in a randomized complete block design and replicated three times. Boron was applied at the rate of 0, 0.25, 0.50, 1.0, 2.0, 3.0 and 5.0 mg B L-1 as H3BO3 along with a basal dose of modified complete nutrient solution based on the Long Ashton Formula. Results revealed that significant treatment effects were found on the growth response of radish plants and maximum yield was recorded at 0.5 mg L-1 of added B. Toxic effects accompanied by considerable yield decreases was observed at higher levels of B supply. The concentration of P and B in plants were increased, S decreased and N remain unchanged. While, the total uptake of all anions except B significantly decreased with increasing levels of B in the nutrient solution and showed close similarity to the growth response of radish plants, suggesting that total uptake of anions was useful but alternative way of estimating the nutrient behavior with regard to B supply. Generally, low and high levels of added B had detrimental effects on the concentration and total uptake of anions in radish plants. The present study suggests that B supply had specific effects with respect to different anions.

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