Persistence of Beauveria bassiana Efficacy on Wheat Grains to Protect Stored-Grains from Post-Treatment Pest Infestations

Huriye Yasemin Korkmaz; Mehmet Kubilay Er

doi:10.18016/ksutarimdoga.vi.1018408

EN TR

Persistence of Beauveria bassiana Efficacy on Wheat Grains to Protect Stored-Grains from Post-Treatment Pest Infestations

Abstract

This study was carried out to determine the post-treatment efficacy of three local Beauveria bassiana isolates by applying them against adults of three common stored-product pests, Sitophilus oryzae L. (Coleoptera: Curculionidae) Rhyzopertha dominica F. (Col.: Bostrichidae) and Oryzaephilus surinamensis L. (Col.: Silvanidae). For the biological tests, wheat grains were mixed with fungal spores at 1000 ppm (w/w) concentration then 20 adults were released 1, 15 and 28 days after the treatments. For the tests carried out with S. oryzae; the mortality rate was initially 33.3-41.6% and 68.3-76.6%; and declined to 6.6-18.3% and 13.3-21.6% on the 7th and 14th day, respectively, when released 28 days later. The initial mortality of R. dominica was 46.6-50.0 % and 93.3-95%; and became 10-18.3% and 16.6-28.3% when released 28 days later. Oryzaephilus surinamensis mortality on the 7th and 14th day was initially 41.6-46.6% and 70.0-85.0%, and decreased to 8.3-15% and 13.3-20.0%, respectively, when released 28 days later. Mortality rates at the end of each incubation period, for all testing isolates and insect species, were significantly reduced when waiting time of spores on wheat was prolonged. For all incubation periods, similar mortality rates were obtained from all isolates and similar efficiacy loss was observed. All the results together indicate that the responsible factors for time-dependent loss of activity in B. bassiana isolates should be determined, and in line with these data, precautions need to be taken.

Keywords

Uygulama Sonrası Zararlı Bulaşmasından Depolanmış Buğdayın Korunması Bakımından Beauveria bassiana Etkinliğinin Kalıcılığı

Öz

Bu çalışma, üç yerel Beauveria bassiana izolatının spor etkinlik sürelerinin belirlenmesi amacıyla, yaygın olan depolanmış ürün zararlılarından Sitophilus oryzae L. (Coleoptera: Curculionidae) Rhyzopertha dominica F. (Col.: Bostrichidae) ve Oryzaephilus surinamensis L. (Col.: Silvanidae) erginlerine karşı uygulanarak yürütülmüştür. Biyolojik testler için buğday danelerine 1000 ppm (w/w) konsantrasyonunda B. bassiana sporu karıştırılmış ve 1, 15 ve 28 gün sonra 20’şer ergin salımı yapılmıştır. Sitophilus oryzae ile yürütülen testlerde 3 izolat için genel olarak; 7. ve 14. gün ölüm oranı başlangıçta %33.3-41.6 ve %68.3-76.6 olup 28 gün sonraki salımlarda %6.6-18.3 ve %13.3-21.6’ya düşmüştür. Rhyzopertha dominica başlangıç ölüm oranları 7. ve 14. gün için %46.6-50.0 ve %93.3-95.0’dır ve 28 gün sonraki salımlar sonucunda %10.0-18.3 ve %16.6-28.3 olmuştur. Oryzaephilus surinamensis başlangıç ölümleri ise 7. ve 14. gün için %41.6-46.6 ve %70.0-85.0’den 28 gün sonraki salımda %8.3-15.0 ve %13.3-20.0’a düşmüştür. Buğdayda sporların bekleme süresi uzadıkça, tüm fungus izolatları ve böcek türleri için her inkübasyon süreci sonrasında ölüm oranları önemli derecede düşmüştür. İnkübasyon süreçlerinin tümünde tüm izolatlar için benzer ölüm oranları belirlenmiş ve etkinlik kayıplarının benzer olduğu gözlenmiştir. Tüm sonuçlar B. bassiana izolatlarında zamana bağlı aktivite kaybından sorumlu faktörlerin belirlenmesi ve bu veriler doğrultusunda önlem alınması gerektiğini göstermektedir.

Anahtar Kelimeler

Supporting Institution

Kahramanmaraş Sütçü İmam Üniversitesi, Bilimsel Araştırma Projeleri Koordinasyon Birimi

Project Number

Project No: 2013/1-21D

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Details

Primary Language

English

Subjects

Agricultural, Veterinary and Food Sciences

Journal Section

Research Article

Authors

Huriye Yasemin Korkmaz ^*
0000-0002-7586-1812
Türkiye

Mehmet Kubilay Er
0000-0003-1568-8656
Türkiye

Publication Date

December 30, 2022

Submission Date

November 3, 2021

Acceptance Date

December 29, 2021

Published in Issue

Year 2022 Volume: 25 Number: Ek Sayı 1

DOI

https://doi.org/10.18016/ksutarimdoga.vi.1018408

IZ

https://izlik.org/JA67DD99US

Cite

RIS / Bibtex

APA

Korkmaz, H. Y., & Er, M. K. (2022). Persistence of Beauveria bassiana Efficacy on Wheat Grains to Protect Stored-Grains from Post-Treatment Pest Infestations. Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi, 25(Ek Sayı 1), 143-148. https://doi.org/10.18016/ksutarimdoga.vi.1018408