Anilakumar Rajaram, KRajaram, K PKAU2019-01-072019-01-071993Journal of Tropical Agriculture, 31(1), 53-59.http://krishikosh.egranth.ac.in/handle/1/5810089205An experiment was conducted to identify the best urea form which allows minimum N loss through ammonia volatilization but simultaneously ensuring good yield in the sandy and laterite soils of Kerala. The sulphur coated urea and urea mudball deep placement recorded minimum N loss through ammonia volatilization (2.85% and 5.29% respectively, of the applied N). However, application of urea supergranu lei n the reduced zone recorded the maximum grain yield and N recovery. Though the rate of ammonia volatilization was comparable between the two soils, yield was higher in laterite soil, irrespective of the treatments.ennullArticle