Long term Effects of manure, charcoal and mineral fertilization on crop production and fertility on a highly weathered Central Amazonian upland soil

Publication Type:

Journal Article


Plant Soil (2007)

Accession Number:

DOI 10.1007/s11104-007-9




black carbon, Brazil Organic agriculture, Oxisol, terra preta de indio


Application of organic fertilizers and charcoal increase nutrient stocks in the rooting zone of crops, reduce nutrient leaching and thus improve crop production on acid and highly weathered tropical soils. In a Weld trial near Manaus (Brazil) 15 diVerent amendment combinations based on equal amounts of carbon (C) applied through chicken manure (CM), compost, charcoal, and forest litter were tested during four cropping cycles with rice (Oryza sativa L.) and sorghum (Sorghum bicolor L.) in Wve replicates. CM amendments resulted in the highest (P < 0.05) cumulative crop yield (12.4 Mg ha