INVESTIGATION OF THE POSSIBILITIES USE OF SOME BACTERIAL BIOPESTICIDES IN THE BIOLOGICAL CONTROL AGAINST <i>APHIS</i> <i>POMI</i> (DE GEER, 1773)

In this study, the usability of the bacteria biological control against Aphis pomi, 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.

Dergi

FRESENIUS ENVIRONMENTAL BULLETIN

Yıl

2021

Cilt

30

Sayı

6B

Sayfa

7433-7435

ISSN

1018-4619

eISSN

1610-2304

WoS UID

WOS:000670303700031