Gypsum effects on eucalyptus nutrition in subtropical Brazil / Efeitos da aplicação de gesso na nutrição de eucalipto no Brasil subtropical

• Autor(a) principal: Ferreira, Carla Fernanda
• Data de Publicação: 2020
• Outros Autores: Bassaco, Marcos Vinícius Martins, Araújo, Eloá Moura, Pauletti, Volnei, Prior, Stephen A, Motta, Antônio Carlos Vargas
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista Veras
• Texto Completo: https://ojs.brazilianjournals.com.br/ojs/index.php/BRJD/article/view/9658
• topic: soil amendment; nutrients; potentially toxic elements; calcium sulfate; cultivated forest.

Agricultural gypsum has been used to mitigate soil Al toxicity and increase Ca and S under low availability conditions. To determine the influence of gypsum application on the nutritional status of Eucalyptus urograndis, a study was established on low fertility acid soil at two sites (Ventania and Jaguariaiva) under subtropical conditions in southern Brazil. The experiment consisted of a control and six rates of agricultural gypsum (i.e., 0, 0.3, 0.6, 1.2, 2.4, 4.8, and 9.6 T ha-1) broadcast on the soil surface during seedling transplanting. Foliar tissues collected at 12, 24, and 36 months after transplanting were evaluated for nutrients (Ca, Mg, K, P, S, Fe, Mn, Zn, Cu, B) and other elements (Al, Pb, Cr, Cd, Ba, As). Despite similar soil properties at the two experimental sites, nutritional effects and site responses were variable with plant age. At Jaguariaiva, gypsum amendment enhanced Ca concentration by 2-fold at 12 months and 55 % at 24 months but had no effect at 36 months. Gypsum increased S concentration in the first year at Jaguariaíva for the highest rate and in all three years at Ventania for the two highest rates. Gypsum use decreased Mg tissue concentration for both sites but at different time scales. The Ventania site exhibited diminishing Al and Mn and increasing P in foliage over time. Findings suggest that agricultural gypsum applied to young eucalyptus stands in subtropical Brazil will have little effect on foliar elements in the long-term.