Abstract
A salt-tolerant (Pokkali) and a salt-sensitive (IR28) variety of rice (Oryza sativa L.) were grown in a phytotron to investigate the effect of K (0, 25, 50 and 75 mg K kg−1 soil) application on their salt tolerance. Potassium application significantly increased potential photosynthetic activity (Rfd value), percentage of filled spikelets, yield and K concentration in straw. At the same time, it also significantly reduced Na and Mg concentrations and consequently improved the K/Na, K/Mg and K/Ca ratios. IR28 responded better to K application than Pokkali. Split application of K failed to exert any beneficial effect over basal application.
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Bohra, J.S., Doerffling, K. Potassium nutrition of rice (Oryza sativa L.) varieties under NaCl salinity. Plant Soil 152, 299–303 (1993). https://doi.org/10.1007/BF00029100
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DOI: https://doi.org/10.1007/BF00029100