Results of Research on Some Strain Mycopathogens on Coffee Scale Insect in Centre Highland

Date Received: 05-06-2025

Date Published: 13-06-2025

##submissions.doi##: https://doi.org/10.31817/tckhnnvn.2012.10.1.

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Issue: Vol. 10 No. 1 (2012)

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NÔNG HỌC

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Van, N., Thi, G., Thi, V., Thi, T., Thi, T., Thanh, T., & Duy, T. (2025). Results of Research on Some Strain Mycopathogens on Coffee Scale Insect in Centre Highland. Vietnam Journal of Agricultural Sciences, 10(1). https://doi.org/10.31817/tckhnnvn.2012.10.1.

Results of Research on Some Strain Mycopathogens on Coffee Scale Insect in Centre Highland

Nha Pham Van (*) , Giang Ho Thi Thi , Vuong Pham Thi , Thanh Dong Thi , Tuyet Tran Thi , Thuy Dang Thanh , Trong Pham Duy

  • Tác giả liên hệ: [email protected]

    • Keywords

    Coffee scale insect, mycopathogens, Metarhizium anisopliae, Beauveria bassiana

    Abstract


    Since 2009 up to date, over 7,000 specimens of coffee scale insect infected with mycopathogens in three provinces in the Central Highland, i.e. Dak Lak, Dak Nong, and Gia Lai were collected, among these 360 specimens were selected for isolation. 25 strains of insect fungi were identified based on morphological and molecular characteristics and 6 parasitic species were identified including: Beauveria bassiana, Metarhizium anisopliae, Cephalosporium lanoso-niveum, Cordyceps nutans; Toxicocladosporium sp., and Paecilomyces cicadae. Virulence test by in vitro evaluation of  extracellular enzyme activities showed that 8 strains as MR3, MR4, MR8, MR9, BR5, BR11, BR13 and BR16. These strains showed high potential for mass product to control scale insect on coffee. The optimal temperature for growth and development of these strains ranged from 25 to 280C. At 300C fungal strains of BR2, BR4, BR7, BR10, BR11, BR13, and BR16 can grow well. The best substrate for mass product of these strains was rice. Application of bio-products under laboratory condition showed that highest control efficacy was 77.78% with strain BR5, followed by 74.45% with strain MR4.

    References

    Trần Kim Loang (2002). Nghiên cứu một số nguyên nhân gây hiện tượng vàng lá, thối rễ trên cà phê vối ( Coffea canephora pierre exfroehner) tại Đắc Lắc và khả năng phòng trừ. Luận án tiến sĩ nông nghiệp.

    Phạm Văn Nhạ, Hồ Thị Thu Giang, Phạm Thị Vượng, Đồng Thị Thanh, Trần Thị Tuyết, Đặng Thanh Thúy, Phạm Duy Trọng (2011). Kết quả điều tra thu thập, phân lập và tuyển chọn một số chủng nấm ký sinh trên rệp sáp hại cà phê tại Tây Nguyên. Tạp chí Khoa học và phát triển số 1/2011, tr.22-29

    Võ Thị Thu Oanh, Lê Đình Đôn, Nguyễn Thị Chắt, Bùi Cảnh Tuyến (2008). Khả năng gây bệnh của nấm Metarhizium anisopliae ( Metsch) Sorokin đối với rệp sáp giả (Dysmicoccus sp) trên cây na. tạp chí BVTV số 3, tr. 15-19.

    Bheemaiah, M, M., (1992). Coffee and its management in South India, 7 India coffee, (12), pp, 9 -18.

    Driver F., and Milner R.J. (1998). PCR applications to the taxonomy of entomopathogenic fungi. In application of PCR in Mycology, CABI, UK.

    Jacques Fargues, Amidou Ouedraogo Mark S. Goettel and Chris J. Lomer, (1997). Effects of Temperature, Humidity and Inoculation Method on Susceptibility of Schistocerca geregaria to Metarhizium flavoviride. Biocontrol Science and Technology 7, 345 - 356.