Cultivation of salt-tolerant varieties of rice and other crops has helped increase crop yield and farm income Surinder Sud / New Delhi June 29, 2010, 0:42 IST High salt content of the soil is a major problem that confronts farmers in several parts of the country. Commonly referred to as soil salinity, this malady impairs soil health, resulting in poor crop yields. In extreme cases, it renders the land unfit for cultivation. Data collected by the scientists of Karnal-based Central Soil Salinity Research Institute (CSSRI) with the help of satellite