Different limestone rates increase the nutrient absorptions by the Jatropha curcas

• Autor(a) principal: Ohland, Tatiane
• Data de Publicação: 2019
• Outros Autores: Lana, Maria do Carmo, Frandoloso, Jucenei Fernando
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Ciência Florestal (Online)
• Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/35423
• topic: Soil acidity; Liming; Jatropha curcas; Acidez do solo; Calagem; Jatropha curcas

The aim of this work was to evaluate if different limestone rates, applied in subsurface, influence the nutrients absorption in Jatropha curcas L. plants in the initial development. The experiment was carried in pots and under greenhouse conditions, where the J. curcas plants were grown in PVC pots, divided into surface layer (0-20 cm) and subsurface layer (20-60 cm). The surface layer received corrected soil (11.1 t ha-1 of CaCO3 and MgCO3) and fertilizers. In the subsurface layer, it was added the doses of 0, 3.7, 5.6, 7.4, 11.1 and 14.9 t ha-1 MgCO3 and CaCO3 in molar ratio 4:1. After 120 days of plant emergence, the contents and the accumulations of Al, P, K, Ca, Mg, Zn, Mn, Fe and Cu in leaves, stems and roots were evaluated. In J. curcas plants, the Al contents are higher in root tissues, followed by leaves and stem. The contents and the accumulations of P, K, Ca, Mg, Zn and Mn in the plant tissue are influenced by the increase of limestone rates in the soil. The contents of Fe and Cu in the plant tissue of Jatropha curcas were not influenced by the increasing of limestone rates in the subsurface.