Yield trends and apparent nutrient balances in intensified and diversified rice-based cropping systems

abonos abonos nitrogenados abonos npk absorption de substances nutritives ail ajo allium sativum arroz capsicum annuum crop residues crop yield cropping systems efectos residuales enfouissement engrais engrais npk enterrado fertilizers fosforo garlic incorporation mais maize nitrogen fertilizers npk fertilizers nutrient uptake nutrientes nutrients oryza sativa phosphore phosphorus potasio potassium rendement des cultures rendimiento de cultivos residual effects residuos de cosechas rice riz sistemas de cultivo substance nutritive symptome symptoms tomate tomatoes zea mays