- Worldwide distribution. A problem of many plant families - cabbages, cucumber, legume, potato, ornamentals, and weeds.
- Feed on undersides of leaves, which become silvery or brown, and curl. Feeding on fruit when it is young produces scars when the fruit expands.
- Spreads viruses, e.g., Tomato spotted wilt virus is widespread and important (not reported from Pacific island countries).
- Cultural control: avoid planting near older crops; nurseries far from production areas and/or use thrips-proof netting; weed before planting; at harvest, collect trash and burn. For the control of TSWV use resistant varieties.
- Chemical control: use soaps, oils, neem, or spinosad.
Pacific Pests, Pathogens, Weeds & Pesticides
Melon thrips (106)
Photo 1. Warty scaring at the calyx end of the chilli fruit caused by Thrips palmi, while the fruit was still in the bud.
Photo 2. Faint lines of scaring down the chilli fruit from the calyx end caused by Thrips palmi, while the fruit was still in the bud.
Thrips palmi (but note, no species of palms are host!).
AUTHOR Grahame Jackson & Mani Mua
Information from Waterhouse DF, Norris KR (1987) Thrips palmi. Biological Control Pacific Prospects. Inkata Press; and CABI (2021) Thrips palmi (melon thrips). Crop Protection Compendium. (https://www.cabi.org/isc/datasheet/53745); Melon thrips Thrips palmi. Department of Environment Food & Rural Affairs. (https://planthealthportal.defra.gov.uk/assets/factsheets/thrips-palmi-factsheet.pdf). Photo 1 Guyot J, INRA, Pointe-a-Pitre, Bugwood.org. Photo 2 Plant Protection Service Archive, Plant Protection Service, Bugwood.org.
Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community.