Influence of parent material on organic phosphorus fractions in vineyard soils in Santa Catarina, Brazil

Revista Ambiente & Água

Denilson Dortzbach¹  Eduardo Carvalho da Silva Neto²  Shirlei Almeida Assunção²  Marcos Gervasio Pereira² 

[1] Centro de Informações de Recursos Ambientais e de Hidrometeorologia de Santa Catarina (CIRAM).Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (EPAGRI), Rodovia Admar Gonzaga,n° 1347, CEP: 88034-901, Florianópolis, SC, Brazil. ;Departamento de Solos. Instituto de Agronomia. Universidade Federal Rural do Rio de Janeiro (UFRRJ),BR 465, km 7, CEP: 23897-000, Seropédica, RJ, Brazil. ;

关键词: grapevine;    organic carbon;    soil acidity;    soil management;    wine;   

DOI  :  10.4136/ambi-agua.2546

来源: DOAJ

【 摘 要 】

Phosphorus (P) is an essential element for vineyard productivity. This study assessed the influence of parent material on organic P fractions in vineyard soils of basaltic and rhyodacitic origin. The experiment was conducted in four municipalities located in mountainous regions in Santa Catarina, Brazil: Urubici, São Joaquim, Campos Novos, and Água Doce. Disturbed soil samples were collected between grapevine rows at depths of 0.00–0.05, 0.05–0.10, 0.10–0.20, and 0.20–0.40 m. Soil chemical attributes (pH in H2O, Ca2+, Mg2+, Al3+, P, K+, and H + Al), total organic carbon (TOC), available and residual P, labile P (extracted with sodium bicarbonate), moderately labile P (extracted with sulfuric acid), and moderately resistant P (extracted with sodium hydroxide) were determined. Soil parent material influenced the dynamics of phosphorus in vineyard soils. Both P forms (available and solution equilibrium P) and P organic fractions (labile, moderately labile, and moderately resistant P), are affected by the parent material. Basaltic soils had higher TOC, available and residual P, and moderately labile and moderately resistant P, whereas rhyodacitic soils showed higher labile P. The high levels of moderately labile and moderately resistant P fractions in basaltic soil were attributed to its high TOC, available P, and residual P contents. Parent material was found to influence organic P fractions in vineyard soils.

【 授权许可】

Unknown