Onion fly egg distribution in soil: a new sampling method and the effect of two granular insecticides |
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Authors: | I Havukkala M O Harris and J R Miller |
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Institution: | (1) The International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30, Mbita, Kenya |
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Abstract: | Tests were carried out in a screenhouse to determine the potential of a microsporidian pathogen,Nosema marucae (Microspora: Nosematidae), for the control of the spotted stalk borer,Chilo partellus (Lepidoptera: Pyralidae), on sorghum. Foliar application of an aqueous suspension ofN. marucae spores on egg batches pasted on the sorghum plants reduced leaf-damage in plants in the protected plots, and increased the
proportion of plants with fully- and partially formed heads compared to unsprayed plots. Further, there was less tunnelling
and fewer larvae in the sprayed plots. The pathogen also reduced pest infestation and damage to plants when the plots were
infested with newly emerged larvae instead of eggs.N. marucae has a potential to controlC. partellus. |
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Keywords: | Nosema marucae Chilo partellus biological control foliar application sorghum egg batches spotted stalk borer |
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