Abstract
A laboratory study was carried out in hydroponic culture to determine the effect of different Ca:Mg ratios of saline medium on the yield and ionic composition of rice. Sodium chloride along with varying ratios of CaCI2 and MgCl2 was added to create salinity levels of 50 and 75 mM, respectively. Paddy and straw yield decreased with increase in salinity but decrease was comparatively less in the treatments with more Ca in the medium. Leaf Na increased while K decreased with increasing salinity. Minimum Na was recorded in the case of higher Ca application. Concentration of K was improved with Ca. Positive effect of calcium in the system caused better growth of rice.

R.H. Qureshi, M. Aslam, M. Azhar Naeem. (1995) EFFECT OF DIFFERENT Ca:Mg RATIOS OF SALINE MEDIUM ON THE YIELD AND IONIC COMPOSITION OF RICE, , Volume 32, Issue 2,3.
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