Akademik Veri Yönetim Sistemi
2 nd International Conference on Food, Agriculture and Animal Sciences (ICOFAAS 2019, Antalya, Türkiye, 8 - 11 Kasım 2019, ss.100-101
In this study, the usability of the bacteria biological control against Aphis morphis, an
important pest of apple trees, was investigated. For this purpose, previously a total of 4
bacterial strains that are effective in biological control against different pests were
determined: Bacillus thuringiensis subsp.kenyae (FDP-8), Bacillus cereus GC subgroup B
(FD-63), Bacillus atrophaeus (FD-17) and Brevibacillus brevis (FD-1), culture media as
a negative control was used and the red sunny insecticide as a positive control. The study
was designed as two stages, in the first stage the bacteria were analyzed under laboratory
conditions. Strains that were successful in in vitro conditions were tested in field conditions
in the second stage. According to the results obtained 72 hours after in vitro application;
FDP-8 and FD-63 of the tested bacteria strains were found to reduce the harmful population
by 90% and 83%, respectively, compared to the negative control. Likewise, the positive
control was 100% successful after 72 hours, but the difference between the effective
bacteria was not significant when statistically compared to effective bacteria. These two
effective bacteria were applied to the shoots with intense pest populations in the field
conditions and live and dead pest populations in 10 cm shoots were calculated. According
to the results obtained 72 hours after in-vivo application; FDP-8 and FD-63 strains tested
were effective against pests with the percentage of 95% and 51%, respectively. Likewise,
the positive control was 100% successful after 72 hours but the difference was not
statistically significant when compared to FDP-8, one of the most effective bacteria. As a
result; It is thought that biochemical bacteria used in this study can be used successfully in
biological control against Aphis pomi, which is an important pest of FDP-8 strain, and it
can also be an alternative to chemicals threatening human and environmental health.