Fungal and Bacterial Bioagents Efficiency on the Control of Potato Pest Phthorimaea operculella via Ingestion or Contact

Authors : Fatih DADAŞOĞLU, Elif TOZLU, Göksel TOZLU, Muhammed TATAR, Recep KOTAN

Pages : 72-80

Doi:10.56430/japro.1313505

View : 21 | Download : 17

Publication Date : 2023-06-30

Article Type : Research Paper

Abstract :Potatoes are one of the most important food products in the world and considered a main human nutrition sources source. Potato tuber moth insert ignore into journalissuearticles values(Phthorimaea operculella Zeller insert ignore into journalissuearticles values(PTM); insert ignore into journalissuearticles values(Lepidoptera: Gelechiidae);); causes remarkable economic losses to important crop, both in field and under storage conditions In this study, the insecticidal efficiency of the following bioagents: Brevibacillus brevis insert ignore into journalissuearticles values(FD-1);, Bacillus atrophaeus insert ignore into journalissuearticles values(FD 17);, Bacillus sphaericus insert ignore into journalissuearticles values(FD 49);, Bacillus cereus insert ignore into journalissuearticles values(FD 63);, Vibrio hollisae insert ignore into journalissuearticles values(FD 70);, Bacillus thuringiensis subsp. kenyae insert ignore into journalissuearticles values(FDP 8); bacteria strains and Beauveria bassiana fungal isolate insert ignore into journalissuearticles values(ET 10);, were evaluated on their efficacy to control P. operculella, under controlled conditions. In addition to insecticidal efficacy evaluations, analyses were also carried out to determine the differences between bioagents action mode: insert ignore into journalissuearticles values(1); uptake insert ignore into journalissuearticles values(ingestion as a gastric poison); and insert ignore into journalissuearticles values(2); contact. For insert ignore into journalissuearticles values(1);, 20 larvae were fed on the tubers immersed in these suspensions to analyze efficacy by ingestion; for insert ignore into journalissuearticles values(2);, suspensions of 1x108 CFU/ml of bacteria and 5.7x105 conidia/ml of fungus were prepared and sprayed to 20 larvae. FD-63 insert ignore into journalissuearticles values(91.67%); and FD-17 insert ignore into journalissuearticles values(88.33%); taken up by diet gave the most effective results against the pest.
Keywords : Bacillus spp, Beauveria bassiana, Biological control, Phthorimaea operculella, Solanum tuberosum