Akademik Veri Yönetim Sistemi
Yüzüncü Yıl Üniversitesi Tarım Bilimleri Dergisi, cilt.33, sa.4, ss.689-699, 2023 (ESCI)
The purpose of this study was to assess the usability of two bacterial
strains, namely Bacillus subtilis PA1 and Paenibacillus azotofixans PA2, for the
biological control of red spider species, and their effects on plant quality and yield
in cotton under field conditions. The experiments were conducted at three different
locations with multiple replications. As a control, a commercial preparation
containing Lambda-Cyhalothrin as the active ingredient was used. The obtained
results from the study revealed that the application of the bioagent formulation led
to a significant decrease in the density of Tetranychus spp. at different biological
stages, ranging from 59.22% to 61.07%, when compared to the control group.
Additionally, several important plant growth parameters showed remarkable
improvements. The number of fruit branches increased by 130.20%, plant crown
diameter by 88.16%, plant height by 40.15%, the number of flowers by 21.25%, the
number of wood branches by 18.13%, the average number of cocoons by 126.53%,
and cocoon weights by 54.65% significantly across all three trial parcels. The
successful implementation of the bacterial application for pest control had a positive
impact on cotton yield. Bulk cotton yield increased by 80.03%, and fiber yield
increased by 82.17%. Consequently, the bacterial formulation containing these two
bacteria demonstrated its potential as a biopesticide in cotton cultivation, effectively
controlling pests while also playing a crucial role in enhancing productivity. Overall,
the study suggests that using the bioagent formulation consisting of Bacillus subtilis
PA1 and Paenibacillus azotofixans PA2 could be an effective and environmentally
friendly approach for pest control in cotton farming, leading to increased
productivity.