Acta Entomologica Sinica (2004) 47, 595-598

Xing-Hui Qiu, Le Kang and Hong-Chang Li (2004)
[The economic threshold for control of the major species of grasshoppers on Inner Mongolian rangeland]
Acta Entomologica Sinica 47 (5), 595-598
Abstract: Grasshoppers are the most important invertebrate pests on rangelands in the Inner Mongolia, where control should be initiated in most regions. A reasonable economic threshold for grasshopper control is essential to the judicious deployment of insecticidal control and thus crucial to the success of integrated pest management. According to the daily food consumption assessed in semi-natural condition and the average longevity of nymphal instars and of adult calculated based on field population sampling data of five major species of grasshoppers, the economic thresholds (3rd instar, individuals/m²) for controlling these grasshoppers by insecticide (malathion) on Inner Mongolian Steppe were suggested, i.e. 22.7 for Dasyhippus barbipes, 37.4 for Aeropedellus variegatus minutus, 16.9 for Oedaleus asiaticus, 34.3 for Myrmeleotettix palpalis, and 36.7 for Chorthippus dubius.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)
Database assignments for author(s): Xinghui Qiu, Le Kang

Research topic(s) for pests/diseases/weeds:
damage/losses/economics

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Myrmeleotettix palpalis	Grasses/turf/rangeland	China (NE)
	Oedaleus asiaticus	Grasses/turf/rangeland	China (NE)
	Dasyhippus barbipes	Grasses/turf/rangeland	China (NE)
	Aeropedellus variegatus	Grasses/turf/rangeland	U.S.A. (NE)
	Chorthippus dubius	Grasses/turf/rangeland	China (NE)