EVALUATION EFFICACY OF SOME LOCAL PLANTS EXTRACTS TO PROTECT WOOD AND OLIVE TREE AGAINST INFESTATION WITH THE TERMITE MICROCEROTERMES DIVERSUES (SILVESTRI | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 21, Issue 2, December 2016, Pages 0-0 | ||
| Authors | ||
| R. F. Al-jassany; D. T.Al-Ameri | ||
| Abstract | ||
| A study was conducted during 2015 to evaluate the efficiency of alcoholic extract and raw powder of the black pepper Piper nigrum fruits and Adhatoda vasica leaves at a concentration of 10% in protecting the lumber and olive trees from the infection by termite insect Microcerotermes diversues (Silvestri). Results showed that the alcoholic extract of the black pepper fruits affected significantly in protecting lumber against the infection by termite insect for four months after the treatment. The results of counting termite individuals found in bait stations refer to the superiority of the alcoholic extracts of black pepper fruits and Adhatoda vasica leaves over the raw powder of both plants in reducing the number of termite individuals that visited the bait station. The results of calculating the loss percentage in treated lumber weight explained the superiority of the alcoholic extract treatments of black pepper fruits and Adhatoda vasica leaves and the chemical insecticide Aquastar Bifinthrin, as a positive control treatment. The weight loss percentages were 5.03, 13.76 and 0.00 % respectively. The highest percentage of lumber weight loss was in the negative control treatment, 77.43%. The results of the experiment to protect olive trees explained that there were no significant differences between the average number of workers in the alcoholic extract and raw powder treatments of black pepper fruits and Adhatoda vasica leaves in comparing with the control treatment, water only, and all treatments were significantly superior in reducing the number of the insect. The results also showed that the treatment of raw powder of black pepper fruits and Adhatoda vasica leaves caused a great change in reducing the behavior of termite workers in building tunnels, and there were no significant differences between the raw powder of Adhatoda vasica leaves and the extract of black pepper fruits in reducing the behavior of termite workers in building tunnels, they were 31.00 and 37.80 respectively. Through the treatment of alcoholic extract of black pepper fruits, absence of workers in the tunnels was recorded throughout the period of study, 5 months, whereas the least activity in building tunnel behavior was recorded by the treatment of raw powder of black pepper fruits. It is clear from foregoing the role of plant extracts to protect lumber and trees against infection by termite, and their effect in the behavior and number of the individuals, so it is necessary to repeat the treatment every five months in order to control the termite insect. | ||
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