Environmental Entomology (1993) 22, 362-367

P.W. Walker and P.G. Allsopp (1993)
Factors influencing populations of Eumargarodes laingi and Promargarodes spp. (Hemiptera: Margarodidae) in Australian sugarcane
Environmental Entomology 22 (2), 362-367
Abstract: A survey of the margarodids Eumargarodes laingi Jakubski and Promargarodes spp. in sugarcane was carried out at Bundaberg, southeastern Queensland, Australia. E. laingi cyst numbers were influenced by soil type; Promargarodes spp. numbers did not differ between soil types, but there were differences between cultivars. There were more E. laingi and Promargarodes spp. cysts in older crops. The number of times the previous fallow was plowed and rotary hoed influenced E. laingi numbers, but not Promargarodes spp. numbers. There were fewer E. laingi cysts after a long fallow, but crop rotations did not affect E. laingi numbers. There were trends to lower Promargarodes spp. numbers after a long fallow or a sugarcane-rockmelon rotation. Fields treated with chlorpyrifos (emulsifiable concentrate) had lower numbers of E. laingi than those treated with controlled-release chlorpyrifos; Promargarodes spp. numbers were not influenced by insecticide applications. Soil pH and electrical conductivity, ripping during fallow, type of irrigation, and nematicides used did not affect numbers of E. laingi or Promargarodes.spp.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Paul W. Walker

Research topic(s) for pests/diseases/weeds:
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Eumargarodes laingi	Sugarcane (Saccharum officinarum)	Australia (NT+QLD)
	Margarodes australis	Sugarcane (Saccharum officinarum)	Australia (NT+QLD)
	Margarodes williamsi	Sugarcane (Saccharum officinarum)	Australia (NT+QLD)