Comparison of some control methods of Thrips tabaci Lindeman on carnation under greenhouse condition
2009
Hosseini-Nia, A., Scientific Member of National Research Station of Ornamental Plants | Malkeshi, S. H., Scientific Member of Plant Protection Research Institute, Tehran
Onion thrips, Thrips tabaci Lindeman, is one of the most important pests of ornamental plants in Iran. This pest causes a serious damage on cut flower products, especially carnation, gladiolus, chrysanthemum and tuberose. Incorrect pest management and applications of chemicals in several times, result in increasing production cost, environmental pollution and hazard effects on producers and consumers. Several experiments were conducted to compare the effect of different control methods on thrips in National research station of ornamental plants of Mahallat and private greenhouses during 2002-2003. The results of conducted experiments during 2003 revealed that integrated pest management (IPM) was the most effective control method with 90.22% pest mortality in large scale in comparison to yellow cards, blue cards, deltametrin, imidaclopride and biological control methods. An experiment was also carried out as randomized complete block design (RCBD) with 3 treatments and 10 replications (each replication = 10 rows of Carnation) in Mahallat during 2005-2006. The treatments were application of pesticides and IPM (application of pesticides and release of 3 Orius albidipennis (Reuter) per plant) and six greenhouses were considered as control. There was significant differences among treatments (p0.01). Number of thrips per flower was 6.8 - 7.7 in control; whereas it was 1.1- 3.1 in sprayed greenhouse and 0.25-0.4 in integrated control. Therefore, correct greenhouse management and integrated pest management program with sufficient training of farmers were recommended to produce cut flowers without pesticide residue and lower thrips damage on Carnation. Key words: Carnation, Onion Thrips, Thrips tabaci Lindeman, IPM, Greenhouse
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