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Laboratory bioassay of some entomopathogenic fungi against broad mite (Polyphagotarsonemus latus Bank)


Citation

Nugroho, Ihsan and Ibrahim, Yusof (2004) Laboratory bioassay of some entomopathogenic fungi against broad mite (Polyphagotarsonemus latus Bank). International Journal of Agriculture and Biology, 6 (2). pp. 223-225. ISSN 1560-8530; ESSN: 1814-9596

Abstract

Laboratory bioassay of three entomopathogenic fungi Beauveria bassiana (Bals.) Vuill., Metarhizium anisopliae (Metch.) Sorokin, Paecilomyces fumosoroseus (Wise) Brown & Smith against broad mite (Polyphagotarsonemus latus Bank) was evaluated. Effect of these fungi on the broad mite egg was also investigated. Dose mortality bioassay revealed that B. bassiana (Glenia celiaisolate, BbGc) caused mortality up to 80.88% at a dose 1 x 108 conidia mL-1 while M. anisopliae (Phylotreta striolata isolate, MaPs) and P. fumosoroseus (Pteroma pendula isolate, PfPp) caused 60 and 90% mortality, respectively. Significant relationship (P=0.05) was obtained between log concentration and probit mortality value for all the three isolates. The effective concentration of B. bassiana to kill 50% mite treated (EC50) was the lowest (2.74 x 106 conidia mL-1) followed by that of P. fumosoroseus (3.23 x 106 conidia mL-1) and M. anisopliae (2.77 x 107 conidia mL-1). The LT50 at comparable dosage (1 x 108 conidia mL-1) of B. bassiana, M. anisopliae and P. fumosoroseus were 3.4 (1.4 - 5.1), 4.3 (3.3 – 5.8) and 2.8 (1.9 – 3.9) days, respectively. Therefore B. bassiana proved to be the most effective followed by P. fumosoroseus and M. anisopliae. However P. fumosoroseus caused mortality more quickly than others. There was poor infection on the mite eggs (10%) caused by M. anisopliae while no infection was recorded by B. bassiana and P. fumosoroseus.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Publisher: Friends Science Publishers
Keywords: Bioassay; Broad mite (Polyphagotarsonemus latus); Beauveria bassiana; Metarhizium anisopliae
Depositing User: Nabilah Mustapa
Date Deposited: 04 May 2017 04:29
Last Modified: 04 May 2017 04:29
URI: http://psasir.upm.edu.my/id/eprint/51947
Statistic Details: View Download Statistic

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