Integrated effect of deeply placed urea and Gliricidia green manure on grain yield of transplanted rice

abonos verdes chlorure de potassium cloruro potasico crop yield cultivo de temporal culture pluviale deep placement engrais vert gliricidia sepium green manures inde india localisation en profondeur oryza sativa potassium chloride rainfed farming rendement des cultures rendimiento de cultivos repiquage superfosfato superphosphate transplanting trasplante urea uree variedades varieties