Determining the Effectiveness of Nesidiocoris tenuis (Reuter) and Trichogramma evanescens Westwood in Biological Control of Tuta absoluta (Meyrick)

Authors : Sevcan ÖZTEMİZ, Mustafa PORTAKALDALI

Pages : 105-111

View : 19 | Download : 15

Publication Date : 2013-12-25

Article Type : Research Paper

Abstract :The study was conducted to evaluate the effectiveness of native species parasitoid, Trichogramma evanescens Westwood and predator, Nesidiocoris tenuisinsert ignore into journalissuearticles values(Reuter); in biological control of Tuta absoluta insert ignore into journalissuearticles values(Meyrick);, detected our country in 2009 and located main pest on tomato greenhouse, in the periods of September 2011-April 2012. There were four treatments. These are: 1. Releasing of T. evanescens insert ignore into journalissuearticles values(T);, 2. Releasing of N. tenuis insert ignore into journalissuearticles values(N);, 3. Releasing of T.evanescens combined with N. tenuis insert ignore into journalissuearticles values(T+N); and 4. Control insert ignore into journalissuearticles values(C);. Experiment was established as a randomized complete block design with three replications, and sampling was made once a week. The decrease rate of egg number of pest was 51.79 %, 47.80 % and 79.68 % in the plots T, N and T+N, respectively, the decrease rate of larva was 50.27 %, 37.77 % and 78.53 % in T, N and T+N plots, respectively. The egg parasitization rate varies between 57.85 % and 59.25 %. The infestation rate of fruits were 11 %, 13 % and 4 % in the plots released egg parasitoid, predatory mirid and combined together, respectively, although 77 % was in the control plot. In conclusion, promising results were obtained in biological control of T. absoluta when Trichogramma releases were combined with N. tenuis rather than releases of separately alone.
Keywords : Örtüaltı, Domates, Biyolojik mücadele, Tuta absoluta, Trichogramma evanescens, Nesidiocoris tenuis