Chemical Control of the Ground Pearl, Eumargarodes laingi1

Spink, William T.; Dogger, J. R.

doi:10.1093/jee/54.3.423

Cited by 4 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Of root weight in the top 120 cm of soil, 61% was contained in the first 30 cm, and there was little difference between the weight of roots in the centre of the row and the inter‐row. The distribution of cysts with depth may also reflect the oviposition pattern of the adults, which tend to move to the soil surface during their mobile phase (Spink 1953; Hitchcock 1965), and soil friability, which is likely to decrease below the cultivation layer. The vertical distribution of cysts and changes in cyst weight with lateral distance from stools were similar at both Windermere and The Pines with very different soils.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Seasonal phenology and distribution in soil in sugarcane fields of the pink ground pearl, Eumargarodes laingi Jakubski, with notes on Promargarodes spp. (Hemiptera: Margarodidae)

Samson

Harris

1998

Australian Journal of Entomology

View full text Add to dashboard Cite

The distribution of cysts of Eumargarodes laingi in soil and the seasonal phenology of the dierent life stages were examined in sugarcane ®elds near Bundaberg. Cysts were widely distributed in soil, occurring in equal numbers in both the planting rows of sugarcane and most or all of the inter-row space. Cysts were smaller at increasing distance from the sugarcane plants. Most cysts were found in the top 20 cm of soil but some occurred to a depth of at least 50 cm. Cysts of Promargarodes spp. were also found in one ®eld. These had a similar lateral distribution to E. laingi but a greater proportion occurred more than 20 cm deep. Adults of E. laingi were found from October to February in the four ®elds examined in 1993 and 1994. Adults were found in the greatest numbers in November, but they comprised less than 10% of the total E. laingi population at any time. A large number of cysts of all sizes was present throughout the year, and the results indicate that most individuals had a life cycle of at least 2 years. The large reservoir of cysts during the adult emergence period explains why E. laingi has proved dicult to control with insecticides and with cultural methods during this supposedly vulnerable time.

show abstract

Section: Discussionmentioning

confidence: 99%

“…The primary pest species is the pink ground pearl, Eumargarodes laingi Jakubski, which is also recorded as a pest of turf in south‐eastern Australia (Gibian 1989). The same species attacks lawns in the south‐eastern United States (Spink 1953). Its country of origin is uncertain (P. Gullan, pers.…”

Section: Introductionmentioning

confidence: 99%

Seasonal phenology and distribution in soil in sugarcane fields of the pink ground pearl, Eumargarodes laingi Jakubski, with notes on Promargarodes spp. (Hemiptera: Margarodidae)

Samson

Harris

1998

Australian Journal of Entomology

View full text Add to dashboard Cite

show abstract

Insects and mites in turfgrass

Held

2020

Urban Landscape Entomology

View full text Add to dashboard Cite

Ground pearls (Hemiptera: Margarodidae) in crops and pastures: biology and options for management

Thomson

Campbell

Young

2021

Crop & Pasture Science

View full text Add to dashboard Cite

Ground pearls (Hemiptera: Margarodidae), so called for their shiny spherical cyst stage, are important root-feeding pests of a broad range of plants predominantly belonging to the family Poaceae. In the tropical and subtropical regions of eastern Australia, ground pearl species cause significant damage on sugarcane and turf grasses and have been identified at multiple sites of pasture dieback in Queensland. The potential impact of ground pearls on pasture production in Australia and elsewhere is largely unknown. This paper reviews Australian and international literature on the biology and management of this poorly understood group of pests. Ground pearls have several features that make control difficult, including a resilient cyst which provides resistance to drought and excessive moisture, a relative impermeability to insecticides, and ease of dispersal through movement of soil. Ground pearls can also modulate the period of encystment to survive adverse environmental conditions, with some species capable of surviving for years while disassociated from a host. No insecticide effectively controls ground pearl cysts. Biological control agents have been identified for some species; however, these pathogens are relatively ineffective on subterranean ground pearl cysts. Cultural control methods such as cultivation and fallowing have helped to reduce ground pearl populations in sugarcane. In turf, practices that maintain plant health such as adequate irrigation and nutrition can mask signs of ground pearl infestation. The paucity of research conducted on the biology and impact of ground pearls represents a constraint to improving management of this pest.

show abstract

Chemical Control of the Ground Pearl, Eumargarodes laingi1

Cited by 4 publications

References 0 publications

Seasonal phenology and distribution in soil in sugarcane fields of the pink ground pearl, Eumargarodes laingi Jakubski, with notes on Promargarodes spp. (Hemiptera: Margarodidae)

Seasonal phenology and distribution in soil in sugarcane fields of the pink ground pearl, Eumargarodes laingi Jakubski, with notes on Promargarodes spp. (Hemiptera: Margarodidae)

Insects and mites in turfgrass

Ground pearls (Hemiptera: Margarodidae) in crops and pastures: biology and options for management

Contact Info

Product

Resources

About