Interference with soil phosphatase activity by maize herbicidal treatment and incorporation of maize residues |
| |
Authors: | P. Perucci L. Scarponi M. Monotti |
| |
Affiliation: | (1) Istituto di Chimica Agraria, Università degli Studi, Borgo XX Giugno 72, I-06100 Perugia, Italy;(2) Istituto di Chimica Agraria e Forestale, Università della Basilicata, I-85100 Potenza, Italy;(3) Istituto di Agronomia Generale e Coltivazionie Erbacee, Università degli Studi, I-06100 Perugia, Italy |
| |
Abstract: | Summary This study is concerned with the way alachlor, atrazine and metolachlor interfered with phosphatase activity in a clay loam soil unenriched and enriched with maize residues. Enrichment caused an increase in all phosphatase activities (acid and alkaline phosphomonoesterase, phosphodiesterase, phosphotriesterase) tested. Interference with phosphatase activity following herbicidal treatment was found in both unenriched and enriched soil samples. Statistically significant interference was dependent on soil enrichment, the type of herbicide and its rate of application and the time elapsed since the herbicidal treatment. The observed changes in phosphatase activities are attributed to herbicidal action on phosphatase-producing microorganisms. Among the herbicides tested, the acetanilide derivatives exerted a lesser inhibiting effect than atrazine. Nevertheless, all the altered phosphatase activities showed a tendency, more or less rapid, to reach the levels in the corresponding untreated soil samples. |
| |
Keywords: | Maize weedkillers Phosphomonoesterases Phosphodiesterase Phosphotriesterase |
本文献已被 SpringerLink 等数据库收录! |
|