Environmental Entomology (1986) 15, 93-95

E.A. Heinrichs, G.B. Aquino, S.L. Valencia, S. De Sagun and M.B. Arceo (1986)
Management of the brown planthopper, Nilaparvata lugens (Homoptera: Delphacidae), with early maturing rice cultivars
Environmental Entomology 15 (1), 93-95
Abstract: Nilaparvata lugens (StAl) populations on very early and early maturing rice cultivars with growth durations of 94-I03 days from sowing to harvest were much lower than those on 'IR20', a medium-duration (120 days) cultivar, on which populations reached a peak in the third generation. The very early and early maturing cultivars, which were nearing harvest and were apparently unsuitable to the insects at the time of their final buildup, escaped damage. N. lugens/predator ratios were lower in the very early and early cultivars than in 'IR20'.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Elvis Arden Heinrichs

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Nilaparvata lugens	Rice (Oryza)	Philippines