Effects of Temperature, Humidity and Conidial Density on Infection by Beauveria bassiana of Adult Sweet Potato Weevil, Cylas formicarius(FABRICIUS)(Coleoptera: Curculionidae).

慶次, 安田; 和子, 高江洲; 勝江, 上原

doi:10.1303/jjaez.41.55

Cited by 12 publications

(4 citation statements)

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“…But this is not true in all cases, viz., Luz and Fargues (1999), who observed a humidity threshold of [96% for efficacy of B. bassiana against Rhodnius prolixus Stål. Similarly, Yasuda et al (1997) observed reduced efficacy of against Cylas formicarius Fabricius at \43% relative humidity. There are other examples in the literature, e.g., Altre and Vandenberg (2001), Lazzarini et al (2006).…”

Section: Humiditymentioning

confidence: 82%

Ecological factors in the inundative use of fungal entomopathogens

2009

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Fungal entomopathogens have been developed in numerous countries as biocontrol agents with more than 100 mycoinsecticide products commercially available in 2006. The chief, perhaps sole, use of these mycoinsecticides has been as inundative agents, within a chemical paradigm. Large numbers of propagules are applied in an attempt to overwhelm by brute force many of the factors that keep a pathogen in nonepizootic equilibrium with its host. This review attempts to summarize what we know about the abiotic and biotic factors that affect the efficacy of these mycoinsecticides in both foliar and soil applications. Sunlight, humidity, temperature, and phylloplane-associated factors can affect both immediate efficacy and persistence on plants. Likewise, soil texture-moisture interactions, temperature, and a host of biotic factors can affect mycoinsecticides in the soil. Despite much research, our understanding of these ecological aspects is imperfect, especially in a holistic, dynamic sense.

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Section: Humiditymentioning

confidence: 82%

Ecological factors in the inundative use of fungal entomopathogens

2009

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“…Infeksi B. bassiana pada serangga C. formicarius dapat mempengaruhi tingkat kesuburan (fecundity) maupun viabilitas telur yang dihasilkan (Ondiaka et al 2008). Menurut Yasuda et al (1997) dan Ali et al (2009) aplikasi B. bassiana melalui permukaan tanah dengan frekuensi yang tepat lebih efektif untuk mengendalikan hama penggerek umbi jika dibandingkan dengan metode lainnya. Penelitian ini bertujuan untuk menguji integrasi pengendalian hama C. formicarius yang terdiri atas beberapa komponen pengendalian di lahan entisol yang endemik.…”

Section: Pendahuluanunclassified

Integrasi komponen pengendalian hama penggerek ubi jalar (Cylas formicarius Fab.) (Coleoptera: Curculionidae)

Prayogo¹,

Setyanignsih²,

Hariyono³

et al. 2022

J Entomol Indones

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Sweetpotato weevil Cylas formicarius Fabricius is major obstacle in increasing of sweet potato production in various countries. Tuber damage due to C. formicarius causes yield loss up to 80%. This study aims to examine the integration control of C. formicarius in entisol, each control combination was composed of various components. The control integration was composed of various components of synthetic insecticide, application of entomopathogenic fungus Beauveria bassiana, weeding, turning of the stems, heap up, and cover mounds using plastic mulch. The study used a randomized block design, each treatment was repeated five times. The research was conducted at Kendalpayak experimental station from May to September 2017. The result showed that P5 with B. bassiana application five times, addition of 3 t/ha organic fertilizer, cover mounds by plastic mulch was most effective in suppressing of C. formicarius in endemic entisol. The tuber weight at control combination (P5) was reached 23 t/ha or 56% higher than control combination of farmer cultivation (P1) was only 10 t/ha. The entisol land with an alluvial structure cracks easily during in the dry season, so that adults to penetrate the base of tubers and lay their eggs. The results of this study indicate that control combination of P5 can be recommended as a innovation control technology of C. formicarius in endemic entisol.

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“…For example, growth rates and survival of Trichoderma strains are promoted by high relative humidity (90%) (Elad et al, 1993;Santamarina et al, 2006;Schubert et al, 2009;Begoude et al, 2007). Colonisation rates of Aureobasidium pullulans increased with increasing humidity from 60% to 100% (De Curtis et al, 2012), while B. bassiana efficacy against Cylas formicarius was reduced at 43% relative humidity (Yasuda et al, 1997) and was reported to exhibit a humidity threshold of 96% for efficacy against Rhodnius prolixus (Luz et al, 1999). Coniothyrium minitans is active between 9-24% moisture, with a decrease in survival and virulence at high (45%) soil moisture Huang et al, 2008).…”

Section: Humiditymentioning

confidence: 99%