Download Tropical fruit pests and pollinators : biology, economic by Jorge E. Peña, Jennifer Sharp, Manes Wysoki PDF

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By Jorge E. Peña, Jennifer Sharp, Manes Wysoki

Bugs and different pests reason significant fiscal harm on fruit plants within the tropics. in spite of the fact that, a few bugs are worthwhile and feature a task in pollinating plants, hence permitting fruit set. This booklet reports those injurious and worthy organisms and the way they may be managed to augment fruit creation and caliber.

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Additional info for Tropical fruit pests and pollinators : biology, economic importance, natural enemies, and control

Example text

In Australia, T. hawaiiensis causes a superficial skin injury locally referred to as ‘corky scab’. Adults are attracted to the emerging inflorescence. Female oviposition and subsequent nymphal and adult feeding cause damage on the developing fruit while the bunch is wrapped closely in the bracts. Oviposition punctures result in localized raised ‘pimples’ which disappear as the fruit develops, while the superficial grazing by the thrips develops into the slightly raised silvery grey areas of ‘corky scab’.

Larvae reared on Mbwazirume (AAA-EA), FHIA-03, Ndiizi (AB), and Yangambi-Km5 (AAA) also had high mortality rates. Rhizome extracts from Kayinju applied to susceptible rhizome material inhibited larval feeding, while extracts from susceptible clones did not. 47) between rhizome hardness and infestation rate and hypothesized mechanical resistance to oviposition or larval development. However, Ortiz et al. (1995) found no relationship between rhizome hardness and weevil damage scores in segregating progenies, suggesting that other resistance mechanisms may be more important.

The banana rust thrips Chaetanaphothrips signipennis, apparently native to north Queensland, Australia, was originally described from Sri Lanka. It has also been recorded in Fiji, Panama, Trinidad, Brazil, Honduras, Costa Rica, and Florida. In Brazil, injury by Tryphactothrips lineatus is regularly observed on 30-day-old fruits, or on fruits > 32 mm in diameter (Martinez and Palazzo, 1971). In Mexico, Frankliniella parvula prefers to oviposit in the epidermis of young banana fruits and less frequently in the flower parts.

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