Organic Matter and Rice

Academia Sinica acetic aggregates Agric Agricultural algae amount anaerobic application azolla biogas chemical fertilizers China clay compost compounds concentrations crop residues cropping systems cultivars decomposed decomposition decreased drainage dryland crops English summary experiments farmers farming farmyard manure flooded soils formation fractions green manure humic acids humic substances humus incorporation increase inorganic Institute of Soil International Rice Research IRRI irrigation Japan Japanese Jiangsu kg/ha lignin materials microbial mineralization nitrogen nutrients organic fertilizers organic manures oxidation paddy fields paddy soils peat Philippines physical properties plant growth plant nutrients Ponnamperuma potential reduced rice crop rice plants rice production Rice Research Institute rice soils rice straw rice yield root Scharpenseel seedlings Sesbania sludge soil fertility soil organic matter soil physical Soil Sci Soil Science structures studies submerged soils t/ha Table temperature toxic volatile wastes water hyacinth waterlogged wetland rice wheat