2009
DOI: 10.1590/s0103-90162009000600012
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Chemical and physical fertility indicators of a weakly-structured Ultisol after liming and mulching

Abstract: In the humid tropic, chemical and physical soil properties that decrease soil's nutrient availability and increase oxygen deficiency are important as restrictions to crop growth. The objective of this study was to evaluate the relations between plant growth and chemical and physical fertility indicators of an Ultisol developed from sediments of the Itapecuru Formation in Central-Northern state of Maranhão, Brazil. An experiment was established with randomized block design, four replicates, and six treatments: … Show more

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“…This delays the loss of moisture and improves air capacity and infiltration (Moura et al 2009a). Nutrient retention in the root zone can be enhanced where nutrients are added in slow release forms and biologically mediated processes utilised for nutrient release.…”
Section: Introductionmentioning
confidence: 99%
“…This delays the loss of moisture and improves air capacity and infiltration (Moura et al 2009a). Nutrient retention in the root zone can be enhanced where nutrients are added in slow release forms and biologically mediated processes utilised for nutrient release.…”
Section: Introductionmentioning
confidence: 99%
“…Unfortunately, none of the alternatives to burning increases productivity or ensures sustainability of agrosystems in the humid tropics. Most alternatives replicate practices established in other regions and are based on soil tillage and saturation with soluble nutrients (Moura et al, 2009b).…”
Section: Introductionmentioning
confidence: 99%