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International Journal of Tropical Insect Science (1)

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Optimum larval population of Sesamia calamistis Hmps (Lepidoptera: Noctuidae) for artificial infestation of maize plants
K. I. Nwosu
Journal:

Insect Science and Its Application / Volume 13 / Issue 3 / June 1992

Published online by Cambridge University Press:

19 September 2011, pp. 369-371

Print publication:

June 1992
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One of the critical factors in assessing maize lines for resistance to Sesamia calamistis is the number of larvae/plant used for infestation. Artificial infestation of maize plants with two and five larvae/plant resulted in 29.1 and 39.5% stand loss (dead hearts and stalk breakage), while 10 and 15 larvae/plant resulted in 52 and 72.9% stand loss, respectively. For a satisfactory artificial infestation in maize screening trials against the maize stem borer in Nigeria, a population level of 10–15 larvae/plant is recommended.