Journal of Economic Entomology (2015) 108, 201-209

From Pestinfo-Wiki
Jump to: navigation, search

Leidy Salamanca, Maria R. Manzano, Diosdado Baena, Diego Tovar and Kris A.G. Wyckhuys (2015)
Effect of simulated Dasiops inedulis (Diptera: Lonchaeidae) injury on yield and fruit quality parameters in yellow passionfruit
Journal of Economic Entomology 108 (1), 201-209
Abstract: Yellow passionfruit (Passiflora edulis f. flavicarpa O. Deg.) is a tropical fruit crop that is meeting increasing demand both in local and international markets in South America. The lance fly, Dasiops inedulis (Diptera: Lonchaeidae), affects P. edulis floral buds and flowers, and is thought to cause important yield losses in this crop. In Colombia, D. inedulis are commonly controlled through calendar-based applications of chemically synthesized insecticides, and no scientific criteria exist to guide pest management. In the present study, we simulated D. inedulis injury to passionfruit plants, over the course of three production cycles. We assessed the effect of seven different categories of flower bud removal (from 0% to 79.9%) on passionfruit yield and fruit quality parameters. Removal rates above 20% caused a significant reduction in the number of flowers, while yield levels were lowest at 50–79.9% bud removal. With increasing rates of flower bud removal, we observed higher initial production of buds and lower levels of natural abortion of floral and fruiting structures. For the three consecutive harvests, maximum yield levels were 7.57 ± 5.51 kg (mean ± SD; with 0–9.9% damage), and minimum yield was 2.37 ± 2.15 kg (60–69.9% damage) per plant. For fruit quality parameters, D. inedulis injury did not affect fruit pulp weight or the content of soluble solids (Brix). Our work provides insights into the impact of D. inedulis on yellow passionfruit production, and constitutes a basis for future integrated pest management programs for this pest.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Kris A.G. Wyckhuys

Research topic(s) for pests/diseases/weeds:
damage/losses/economics


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Dasiops inedulis Passionfruit (Passiflora) Colombia