Portal de Periódicos da CAPES

Artigo Produção Nacional Revisado por pares

BIBTEX RIS

Effect of paclobutrazol on microbial biomass, respiration and cellulose decomposition in soil

2009; Elsevier BV; Volume: 45; Issue: 3 Linguagem: Inglês

10.1016/j.ejsobi.2009.01.002

1778-3615

Iúna Carmo Ribeiro Gonçalves, Ademir Sérgio Ferreira de Araújo, Eulália Maria Sousa Carvalho, Romero Francisco Vieira Carneiro,

Polymer-Based Agricultural Enhancements

Abstract Paclobutrazol is a plant growth regulator largely utilized in mango cultivation and usually applied directly to soil. The aim of this study was to examine the effect of paclobutrazol on soil microbial biomass, soil respiration and cellulose decomposition in Brazilian soils under laboratory conditions. Soil samples were collected from fields with and without a reported history of paclobutrazol application. A solution of paclobutrazol (8 mg of active ingredient kg−1 of soil) was added to soils, which were then incubated at 28 °C for 30 days. Paclobutrazol decreased soil microbial biomass, soil respiration and cellulose decomposition in soil with and without a report of paclobutrazol application, while significant increase was observed in the respiratory quotient (qCO2). Our results show that the soil microbiological attributes were negatively affected by paclobutrazol in short-term experiment.