LEPIDOSAPHES BECKII PDF
and purple scale (Lepidosaphes beckii Newm.). The outbreak of scales is associated with mild climatic conditions, especially high relative humidity in the air and. Lepidosaphes beckii (Newman) (Hemiptera: Diaspididae) seasonal abundance on sour-orange, Citrus aurantium trees was carried out in Kafr El-Sohaby, at. The ecology of the purple scale Lepidosaphes beckii (Newman) (Hemiptera: Diaspididae) was studied on citrus, in the area of Kalamata.
|Country:||Moldova, Republic of|
|Published (Last):||22 April 2010|
|PDF File Size:||11.3 Mb|
|ePub File Size:||4.88 Mb|
|Price:||Free* [*Free Regsitration Required]|
Oxford University Press is a department of the University of Oxford.
There was a problem providing the content you requested
When choosing a pesticide, consider information relating to air and water quality, resistance management, and the pesticide’s properties and application timing. It appeared becmii a narrow scale about a tenth of an inch in length, slightly bent at one extremity, and always adhering so closely to the rind of the apple that it is scarcely possible to remove it entire. They concluded that treatment should be begun as soon as scales are detected, even in small numbers.
For use on all varieties; however, bcekii may cause ridging in lemons.
Sign in via your Institution Sign in. Nymphs and adults suck sap from the foliage and branches and spread to the fruits, causing disfiguration, which decreases market value. Close mobile search navigation Article navigation. May increase citrus red mite numbers. Heavily infested leaves turn yellow, probably from a combination of losing assimilates and a toxic secretion, and may drop. The following are ranked with the pesticides having the greatest IPM value listed first—the most effective and least harmful to natural enemieshoney beesand the environment are at the top of the table.
Armourd scales on citrus. When pest crawlers settle on young fruit in the spring they prefer the underside of the calyx, may thus remain unnoticed at first.
This parasite develops externally on the body of immature scales under the scale cover. However, such combinations are highly detrimental to natural enemies, possess high mammalian toxicity and should be avoided except in extreme emergencies.
From Wikipedia, the free encyclopedia. Serious hazards are associated with oil sprays to green lemons because of phytotoxicity after sweating; check label for preharvest interval.
purple scale (Lepidosaphes beckii ) on citrus (Citrus spp. ) –
Oil sprays for the California red scale also control the purple scale. Newman. Do not apply during Dec. The specific name beckii is in honour of historian Richard Beck. The most effective purple scale parasite is Aphytis lepidosaphes, a parasitic wasp that is generally distributed in areas where purple scale occurs.
Valid Names Results
Purple scale may be mass-reared on green lemons, potatoes and banana squash. Lepidosaphes beckii Scientific classification Kingdom: Purple scale; citrus mussel scale Geographical distribution: For use on all varieties.
Scale infestation can be seen by the appearance of the purplish brown scale armour on stems, leaves and fruits of host plants. DrawerWeslaco, TX Genetic Structure of Liriomyza trifolii Diptera: Universal Chalcidoidea Database, accessed 22 January Continuing to use www. Apply higher rate of narrow range oil in July or Aug. Purchase Subscription prices and ordering Short-term Access To purchase short term access, please sign in to your Oxford Academic account above.
Review the Department of Pesticide Regulation’s updated fact sheet. If you originally registered with a username please use that to sign in. In Israel the pest raises four annual generations.
Related articles in Web of Science Google Scholar. Annals of the Entomological Society of America Abstract The purple scale, Lepidosaphes beckii Newmanhas been reduced from the 4th most important pest of Texas citrus to an incidental pest by the introduced parasite, Aphytis lepidosaphes Compere.
To purchase short term access, please sign in to your Oxford Academic account above. The dorsal ducts are arranged in transverse rows. Spread of these parasites has occurred as a result beckli introduction to control the Florida red scale Chrysomphalus aonidumand through accidental spread with its hosts.
The areas surrounding the scale insects on leaves turn yellow and when severely infested the entire leaf may be discoloured prematurely. Lepidosaphes beckii was originally described lepidosaphfs the name Coccus beckii by English entomologist Edward Newman from a fruit imported to Great Britain.