Studies on the residual effects on application of organic materials on growth and yield of rice

agricultural chemicals agronomic characters arroz biological development cereales cereals composition crecimiento croissance crops cultivos cultivos de grano economic plants engrais fertilizers fisiologia fonction physiologique grain crops growth organic matter physiological functions physiologie physiology plantas plante plante de culture plants productividad productivity produit agrochimique profitability rendement rendimiento rentabilidad rice riz yields