Effect of Spray Residues on Scale Insect Populations

1938 ◽  
Vol 31 (6) ◽  
pp. 731-732 ◽  
Author(s):  
Max R. Osburn ◽  
Herbert Spencer
Keyword(s):  
Scale Insect ◽  
Insect Populations

Factors Influencing Scale Insect Populations in Southern Pine Monocultures

1987 ◽  
Vol 70 (1) ◽  
pp. 65 ◽  
Author(s):  
Barbara J. Sheffer ◽  
Michael L. Williams
Keyword(s):  
Scale Insect ◽  
Southern Pine ◽  
Factors Influencing ◽  
Insect Populations

scholarly journals Comparing armoured scale insect (Hemiberlesia spp) populations on male and female Actinidia chinensis vines

2009 ◽  
Vol 62 ◽  
pp. 274-278
Author(s):  
M.G. Hill ◽  
S.J. Dobson ◽  
C.M. Mckenna ◽  
B.J. Maher ◽  
N.A. Mauchline
Keyword(s):  
Scale Insect ◽  
Scale Insects ◽  
Insect Control ◽  
Actinidia Chinensis ◽  
Male And Female ◽  
Insect Populations ◽  
Armoured Scale Insects

The wood and leaves of Actinidia chinensis Hort16A and two male pollinisers A chinensis Meteor and A chinensis Sparkler from commercial kiwifruit orchards were sampled for the presence of armoured scale insects during winter 2007 and summer 2008/09 The numbers and species of scale insect were recorded Meteor had high armoured scale insect populations on its wood with approximately 10 times more armoured scale insects than Sparkler or Hort16A The leaves of Hort16A vines adjacent to Meteor vines had 44 more armoured scale insects and were 30 more likely to be infested by scale insects than the leaves of Hort16A vines adjacent to Sparkler vines The implications of these findings for armoured scale insect control on Hort16A fruit are discussed

The scale insect Coccus pseudomagnoliarum (Kuwana) (Hemiptera: Coccomorpha: Coccidae) on citrus in Greece

2020 ◽  
Vol 13 (2) ◽  
pp. 93-97
Author(s):  
G.J. Stathas ◽  
Ch.F. Karipidis
Keyword(s):  
Citrus Sinensis ◽  
Maximum Rate ◽  
Scale Insect ◽  
Instar Nymph ◽  
Summer Period ◽  
Parasitoid Species ◽  
Parthenogenetic Species

SummaryPhenology and parasitism of the scale insect, Coccus pseudomagnoliarum (Kuwana) (Hemiptera: Coccomorpha: Coccidae), infesting Citrus sinensis (Rutaceae), were studied in Papagou area, in northeastern Athens, from June 2015 to June 2017. Coccus pseudomagnoliarum is a univoltine, viviparous, parthenogenetic species. It overwintered as settled 1st instar nymph on the shoots of the trees. The 2nd instar nymphs appeared between the beginning of April and the end of May, and the mature females were recorded from the beginning of May until the middle of June. The crawlers appeared between the middle of May and the middle of June and the 1st instar nymphs settled on the shoots at the end of May, where they remained during the whole summer period, winter, until the beginning of April next year. Parasitism of the scale was recorded between the beginning of May and the middle of May and reached a maximum rate of 35%. The recorded parasitoid species were Coccophagus shillongensis Hayat and Singh (Hymenoptera: Aphelinidae), Coccophagus spp. and Metaphycus dispar (Mercet) (Hymenoptera: Encyrtidae).

scholarly journals Floral Plantings in Large-Scale Commercial Agroecosystems Support Both Pollinators and Arthropod Predators

Insects ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 91
Author(s):  
Eric G. Middleton ◽  
Ian V. MacRae ◽  
Christopher R. Philips
Keyword(s):  
Large Scale ◽  
Agricultural Land ◽  
Field Margins ◽  
Crop Fields ◽  
Pollinator Abundance ◽  
Arthropod Predators ◽  
Commercial Potato ◽  
Insect Populations ◽  
Beneficial Insect ◽  
Potato Crops

Beneficial insect populations and the services that they provide are in decline, largely due to agricultural land use and practices. Establishing perennial floral plantings in the unused margins of crop fields can help conserve beneficial pollinators and predators in commercial agroecosystems. We assessed the impacts of floral plantings on both pollinators and arthropod predators when established adjacent to conventionally managed commercial potato fields. Floral plantings significantly increased the abundance of pollinators within floral margins compared with unmanaged margins. Increased floral cover within margins led to significantly greater pollinator abundance as well. The overall abundance of arthropod predators was also significantly increased in floral plantings, although it was unrelated to the amount of floral cover. Within adjacent potato crops, the presence of floral plantings in field margins had no effect on the abundance of pollinators or predators, although higher floral cover in margins did marginally increase in-crop pollinator abundance. Establishing floral plantings of this kind on a large scale in commercial agroecosystems can help conserve both pollinators and predators, but may not increase ecosystem services in nearby crops.

scholarly journals Global change in marine coastal habitats impacts insect populations and communities

2021 ◽  
Vol 47 ◽  
pp. 1-6
Author(s):  
Tyler M Rippel ◽  
Jewel Tomasula ◽  
Shannon M Murphy ◽  
Gina M Wimp
Keyword(s):  
Global Change ◽  
Coastal Habitats ◽  
Insect Populations

Effects of bird predation on some pest insect populations in corn

2001 ◽  
Vol 83 (1-2) ◽  
pp. 143-152 ◽  
Author(s):  
A Tremblay ◽  
P Mineau ◽  
R.K Stewart
Keyword(s):  
Bird Predation ◽  
Pest Insect ◽  
Insect Populations

Frego Bract Condition of Cotton in Relation to Insect Populations 1

1972 ◽  
Vol 1 (3) ◽  
pp. 390-391 ◽  
Author(s):  
Thomas F. Leigh ◽  
Angus H. Hyer ◽  
Richard E. Rice
Keyword(s):  
Insect Populations
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