Field evaluation of certain oils, plant extracts, pesticides and bio-insecticides and their mixtures on some sucking pests. infesting watermelon and pepper plantations | ||
| Journal of Pest Control and Environmental Sciences | ||
| Volume 17, Issue 1, 2009, Pages 103-121 PDF (1.03 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpces.2009.459568 | ||
| Authors | ||
| H. M. Hoda* 1; A. Y. Keratum2 | ||
| 1Department of Pest Control and Environmental Protection, Faculty of Agriculture, Alexandria University, Damanhour Branch | ||
| 2Depart of Pesticides, Faculty of Agriculture, Kafr El Sheikh University, Egypt | ||
| Abstract | ||
| The toxic effect of certain compounds including two pesticides [fenitrothion (Sumithion) and etoxazole (Baroque)), mineral oil (K.z-oil), plant oils extracted from citrus such as baladi mandarin, sour orange, acidless orange and blue gum, microbial pesticides (Biofly and Agerin) and mixtures of Kz-oil with plant oils and microbial pesticides, against Thrips tabaci, Aphis gossури. Етроатса вр. Bemisia tabac and Tetranychus urticae on watermelon (Citrullus lanatus var cococynthoides L.) and pepper (Capsicum annum L.) plantations have been done under field conditions. The results achieved in this study can be summarized in the following: Fenitrothion was the most toxic compound followed by Kz-cil on T. tabaci Plant oil extracts were of a moderate toxic effect, while etoxazole was the least toxic compound on T. tabaci. Fenitrothion was the most toxic compound followed by baladi mandarin oil extract and Ke oil and gozyi. Etoxazole was of a moderate toxic effect, but blue gum, sour orange oil and acidless orange oil extracts were the least toxic treatments on A. gosspy. Fenitrothion was the highest effective compound in reducing the population density of Empoasca sp. after the first spray followed by Kz-oil + baladi mandarin oil, Kz-ail+ sour orange oil and etoxazole. The other tested compounds were moderately effective except sour orange oil, acidless orange oil, blue gum oil, Biofly and Agerin which were the least effective compounds on Empeasca sp. No significant differences were found among compounds after the second spray. Fenitrothion was the most effective compound in reducing the population density after the first spray followed by baladi mandarin oil, Kz-ail, Kz-ol+ baladi mandarin oil and K2-oil + blue gum oil on B. tabaci. The other tested compounds were moderately effective except sour orange oil. Biofly and Agerin which were the least effective compounds. All the tested compounds gave satisfactory result in reducing whitefly population ranged between 64.27 and 91.62% after the second pray with significant differences. Ka oil was the most toxic compound followed by fenitrothion and baladi mandarin oil extract on T .Urticae. Sour orange oil, blue gum and acidless orange oil extracts have a moderate toxicity, while etoxazole was the least toxic compound on T urticae. The results showed that Biofly and Agein were highly toxic to T tabaci and A. gossypii while they were of a moderate toxic to 7. urticae. The results showed that all mixtures had potentiation effect against T rabaci, A. gossypii and T urticae. Generally it can be concluded that, all tested compounds reduced the mean numbers of sucking pests on watermelon and pepper plantations. The tested compounds could be arranged descendingly according to their toxicity to the sucking pests as follows: Pesticides mixtures > plant oil extracts> mineral oil microbial pesticides. | ||
|
Statistics Article View: 2 |
||
