Abstract
We have compared growth performance of seven rice and six wheat salt tolerant varieties at different salinity/sodicity levels in pots. Sandy clay loam soil was used to achieve various EC:SAR ratios, i.e. 3.1 :8.6 (T 1 ), 3.9:14.3 (T2), 6.4:15.4 (T3), 7.6:27.8 (T4), 10.3:25.6 (T5) and 11.9:47.4 (T6 ). Seven rice and six wheat varieties were grown and irrigated with canal water. Among the tested rice varieties, SSRI-8 gave maximum productive tillers and paddy yield. Among the tested wheat varieties, SR1-32 gave maximum plant height, productive tillers and grain and straw yields. The high EC:SAR ratios proved more hazardous for rice than that of wheat. Irrespective of the varieties tested, the highest levels of EC and SAR (T5 and T6 ) caused significant reduction in paddy yield while at the lowest levels of EC and SAR (T1 and T2 ) paddy yields were not affected significantly when compared with control. But in case of wheat crop, all the levels, i.e. lowest (T1 and T2 ), medium (T 3 and T 4 ), and highest (T5 and T6) of EC and SAR tested, affected wheat yield adversely with significant differences among EC:SAR ratios as compared to control. For both the crops, there were non-significant differences in yield for both the tested ratios (i.e. 0.50 and 0.25) at all the levels of EC and SAR. Decrease in ECe and SAR after wheat harvest with treatments was in the decreasing order of T6 followed by T5, T4, T3, T2 and T1. Keywords: Evaluation; tolerance; cultivars; salinity; sodicity

Ghulam Murtaza, Abdul Ghafoor, Umad Zafar Kahloon. (2005) COMPARATIVE GROWTH PERFORMANCE OF RICE AND WHEAT VARIETIES AT DIFFERENT EC AND SAR RATIOS IN SOIL, , Volume 42, Issue 1,2.
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