The influence of pesticide application rates on the activity of some soil enzymes | ||
| Journal of Pest Control and Environmental Sciences | ||
| Volume 1, Issue 1, 1987, Pages 1-9 PDF (794.13 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpces.1987.461662 | ||
| Authors | ||
| Maher I. Aly* 1; Osama B. Nassef2 | ||
| 1Plant Protection Department, Faculty of Agriculture, Alexandria University | ||
| 2Sabahea Research Station, Plant Protection Department, Agricultural Research Center, Alexandria, Egypt | ||
| Abstract | ||
| The activity of four soil enzymes (cellulase, dehydrogenase, phosphatase and urease) was investigated after using different rates of herbicides (penoxalin, fluorneturon) and insecticides (car— bofuran and aldicarb) at different trials of application. Increasing the application rates of the tested compounds generally increased soil cellulase and urease activity, while dehydrogenase activity was decreased comparable with control treatment. Penoxal in herbicide decreased phosphatase activity, although the other compounds increased its activity. However, there were sone exceptions at certain rates and tines. Fluoneturon decreased cellulase, phosphatase and urease activity at 1 and 38 days, and at the late periods respectively. It increased dehydrogenase activity at 1 and 56 days. Penoxalin decreased urease activity at 1 and 56 days, and increased dehydrogenase activity at the beginning of the test. Phosphatase activity was increased up to the 17th day from application. Carbofuran and aldicarb insecticides decreased both | ||
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