Abstract
The efficiency of different N fertilizers and their mixture under two salinity levels i.e. control (ECc = 1.7 dS mol) and EC. = 10 dS m-t was compared by recording the number of tillers, straw and paddy yields of rice variety KS 282. Nitrogen was applied @ 60 and 80 mg kg-t of soil as urea, ammonium sulphate and a mixture of urea + ammonium sulphate in 1:1 ratio. Significant reduction in number of tillers and straw, paddy yields was observed due to salinity. Nitrogen application increased N concentration, N uptake and decreased K+ , Na + and cr concentration in straw and paddy. Nevertheless, application of N in the form of ammonium sulphate or its mixture with urea in 1:1 ratio produced statistically better yields than the straight N application as urea. At lower dose, the mixture was found as efficient as the high dose of straight fertilizers.
