English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A survey was carried out at Bandirippuwa Estate, Kirimetiyana Estate and at Isolated Seed Garden, Rajakadaluwa for the pests of coconut inflorescence and developing fruits. The mite, Dolichotetranychus sp. (Tenuipalpidae) which lives beneath the perianth and feeds on the epicarp, causes considerable damage to the developing fruit. Bi-monthly observations on the intensity of infestation of nuts among different forms of coconut indicated a significant difference among forms in their susceptibility to mite damage. Pseudococcus cocotis (Maskell) (Pseudococcidae), Pseudococcus citriculus Green (Pseudococcidae) and Planococcus lilacinus (Cockereli) (Pseudococcidae), when feeding in large numbers on the peduncle, cause button nut shedding and drying up of the inflorescence. The parasitoids and predators of these mealybugs recorded for the first time in Sri Lanka are Promuscidea unfasciativentris Girault (Aphelinidae) Platygaster sp. (Platygastridae), Anagyrus sp. nr. pseudococci (Girault) (Encyrtidae) Coccodiplosis sp. (Cecidomyiidae), Cryptogonus bryanti Kapur (Coccinellidae) and Pseudoscymnus sp. (Coccinellidae). Several species of scale insects namely, Coccus hesperidum (Linnaeus) (Coccidae) Aulacaspis sp. (Diaspididae), Pseudaulacaspis cockerelli (Cooley) (Diaspididae), Aonidiella orientalis (Newstead) (Diaspididae), and Pinnaspis strachani (Cooley) (Diaspididae) are recorded as minor pests of the developing fruits of coconut. Coccophagus silvestrii Compere (Aphelinidae), Scymnus sp. (Coccinellidae), Pseudoscymnus sp. (Coccinellidae) Telsimia ceylonica (Weise) (Coccinellidae), Cryptogonus bryanti Kapur (Coccinellidae) and Cybocephalus sp. (Nitidulidae) are recorded as their parasitoids and predators. These natural enemies are probably responsible for the control of these pests in the field. doi: 10.4038/cocos.v5i0.2050 COCOS 1987 Vol.5 39-42

New Records of some Pests of the Coconut Inflorescence and Developing Fruit and Their Natural Enemies in Sri Lanka