Nutrient status of cattle grazing systems in the western brazilian amazon

  title={Nutrient status of cattle grazing systems in the western brazilian amazon},
  author={B. L. Rueda and Keenan C. McRoberts and Robert W. Blake and Charles Frederick Nicholson and Judson Ferreira Valentim and E C M Fernandes},
  journal={Cogent Food \& Agriculture},
Abstract Low-input cultivated pastures to feed cattle have dominated land use after forest clearing for decades in the western Brazilian Amazon. This study was undertaken to help understand the inherent nutrient supply dynamics underwriting cattle performance on three farms in the state of Acre. We assessed soil chemical and physical properties associated over time with different land uses following forest clearing. This information permitted specifying a conceptual model of nutrient stocks and… Expand
Intensifying forage legumes strata system technology through dairy cattle production
Intensification of forage legume strata system technology (FLSST) through dairy cattle production was implemented in collaboration with the Department of Agriculture and the local government unit ofExpand
Characterization and classification of soils on grazing lands in Kwallatawa village, Sokoto State, Nigeria
Continuous extensive land use without proper land management has the potential to degrade the inherent soil fertility. Kwallatawa grazing lands are experiencing such exploitation which if notExpand


The impact of selective logging and forest conversion for subsistence agriculture and pastures on terrestrial nutrient dynamics in the Amazon
The conversion of primary forests in the Amazon via selective logging, slash and burn agriculture, and pasture establishment, will continue because of the increasing demand for timber andExpand
Production and economic potentials of cattle in pasture-based systems of the western Amazon region of Brazil.
It is suggested that more intensive beef production by judicious fertilization of grass-legume pastures and greater stocking density is the preferable strategy for owners of these cattle systems to improve economic returns under current conditions. Expand
Soil Phosphorus Transformations Following Forest Clearing for Pasture in the Brazilian Amazon
Phosphorus limits grass production in pastures planted on most cleared moist tropical forest, but little is known about soil P dynamics in these ecosystems. We describe changes to total P andExpand
Over the past three decades, large expanses of forest in the Amazon Basin were converted to pasture, many of which later degraded to woody fallows and were abandoned. While the majority of tropicalExpand
Soil carbon changes from conversion of forest to pasture in Brazilian Amazonia
Abstract Soils in Brazilian Amazonia may contain up to 136 Gt of carbon to a depth of 8 m, of which 47 Gt are in the top meter. The current rapid conversion of Amazonian forest to cattle pastureExpand
Exploring options for sustainable beef cattle ranching in the humid tropics: a case study for the Atlantic Zone of Costa Rica
Abstract Options are explored for sustainable, i.e. non-soil-nitrogen (N) mining, beef production in the humid tropical Atlantic Zone of Costa Rica using a modelling approach. Tools used are linearExpand
Organic inputs for soil fertility management in tropical agroecosystems: Application of an organic resource database
Organic resources play a critical role in both short-term nutrient availability and longer-term maintenance of soil organic matter in most smaller holder farming systems in the tropics. Despite thisExpand
Tropical rain forest conversion to pasture: Changes in vegetation and soil properties
The effect of converting lowland tropical rainforest to pasture, and of subsequent succession of pasture lands to secondary forest, were examined in the Atlantic Zone of Costa Rica and it appeared that succession of secondary forests was proceeding toward a floristic composition like that of the primary forests. Expand
Impact of Forage Fertilization with Urea and Composted Cattle Manure on Soil Fertility in Sandy Soils of South-Central Vietnam
Increased production in smallholder beef systems requires improved forage management. Our objective was to evaluate the effects of composted cattle manure and mineral nitrogen (urea) application onExpand
Urea and composted cattle manure affect forage yield and nutritive value in sandy soils of south‐central Vietnam
Urea increased nutrient yield for all forage nutritive value parameters measured and composted cattle manure combined with urea benefits grass yield, but high application rates are needed for sustained high yields on sandy soils. Expand