| Autor: |
Saeed MB; Discipline of Plant Pathology, School of Agricultural, Earth and Environmental Science, University of KwaZulu-Natal, Durban 4001, South Africa.; Faculty of Agriculture, Department of Crop Protection, University of Khartoum, Khartoum 11115, Sudan., Laing MD; Discipline of Plant Pathology, School of Agricultural, Earth and Environmental Science, University of KwaZulu-Natal, Durban 4001, South Africa., Miller RM; School of Biological and Conservation Science, University of KwaZulu-Natal, Durban 4001, South Africa. |
| Jazyk: |
angličtina |
| Zdroj: |
Microorganisms [Microorganisms] 2022 Oct 05; Vol. 10 (10). Date of Electronic Publication: 2022 Oct 05. |
| DOI: |
10.3390/microorganisms10101971 |
| Abstrakt: |
Short-term and long-term evaluation studies were conducted against Ephestia cautella on rice grains, using Beauveria bassiana Strain MS-8 formulated in various doses of kaolin as an active carrier. In the short-term study (45 days), a fixed dose of 0.03 g conidia kg -1 of grain of Strain MS-8 was formulated in kaolin at doses of 0.3, 0.5, 1, and 2 g kg -1 of grain. These formulations were evaluated for their effects on larval mortality and the number of adults emerged. The highest level of larval mortality (90.0%) and the lowest numbers of adults emerged (1.6 insect/100 g of rice grain) were caused by Strain MS-8 in a kaolin dose of 2 g kg -1 . However, Strain MS-8 in a kaolin dose of 1 g kg -1 performed well for the same parameters. In the long-term evaluation study (180 days), the same dose of Strain MS-8 was formulated in kaolin at doses of 0.5, 1, 2, and 3 g kg -1 of grain. These formulations were then evaluated against the levels of webbed grain, grain damage, and weight loss. The lowest levels of webbed grain (2.0%), grain damage (3.0%), and weight loss (1.8%) were caused by Strain MS-8 in kaolin at a dose of 3 g kg -1 , although Strain MS-8 in kaolin doses of 1 g and 2 g kg -1 also performed well for the same parameters. The highest levels of webbed grain (15.0%), grain damage (30.0%), and weight loss (9.0%) were observed in the untreated control treatment (UCT). |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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