Soil attributes affected by calcite ash and natural phosphate in associated ecosystem of caiva

• Autor(a) principal: Hanisch, Ana Lúcia
• Data de Publicação: 2020
• Outros Autores: Balbinot Junior, Alvadi Antonio, da Veiga, Milton, da Fonseca, José Alfredo
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Agropecuária Catarinense (Online)
• Texto Completo: https://publicacoes.epagri.sc.gov.br/rac/article/view/575
• topic: acidez do solo; adubação fosfatada; silvipastoril.

The “caivas” systems are forest remnants which consists of herbaceous forage species grazed extensively, forming asilvopastoral system. In general, the caivas soil present high acidity and low levels of phosphorus, which restricts the productionof forage. The objective of this research was to evaluate the effect of combined superficial application of calcite ash and Gafsaphosphate on soil chemical and physical characteristics. Was used the randomized block design with three replications, withtreatments in a factorial with four doses of calcite ash (0, 3, 6 and 9t ha-1) and two doses of Gafsa phosphate (0 and 600kg ha-1). The calcite ash increased soil pH in the 005cm layer and the levels of Ca and Mg and decreased the levels of Al into 10cmlayer. Surface application of Gafsa phosphate increased levels of extractable P in the 0-5cm layer. The soil physical propertiesrelated to compaction were not influenced by the application of calcite ash and natural phosphate. The dry weight of pastureincreased with the application of calcite ash and natural phosphate, but was not affected by the interaction between them.