Controlied - Release Nitrogen Fertilizers And Their Avaliability To

Increase the efficiency of nitrogenous fertilizers using three main lines(1) different methods of application of water - solubie nitrogen fertilizers; (2) use of coated and uncoated controlled - release nitrogen fertilizers and their effect on wheat plants, and (3) mixing different levels of nitrifica- -tion inhibitors with water - solube nitrogen fertilizers such as ureaand ammonium sulfate and their effect on the growth of cotton plants.