Crop losses and economic impact associated with papaya mealybug (Paracoccus marginatus) infestation in Kenya

Abstract

This study quantified crop losses and economic impacts associated with papaya mealybug (Paracoccus marginatus) infestation in Kenya and identified the most important predictors of papaya tree (Carica papaya L.) yield losses through a household survey of 404 farmers. At least 95% male and 88% female respondents correctly identified papaya mealybug. Papaya was the most affected crop by the pest, with 73% of the respondents indicating that a major part (>60%) of their trees was affected. The estimated papaya yield losses due to papaya mealybug were 57%, with an associated annual economic loss of US$3,009 per ha at the farm level and US$29.8 million at the national level. Regression analysis showed significant yield-reducing effects with high infestation levels of papaya mealybug, use of local varieties, and use of indigenous pest control practices. Economic losses differed significantly by county, with the highest losses reported in Mombasa. Male farmers reported higher losses than their female counterparts. Findings highlight the need for location and gender-specific information on pest management for effectiveness in controlling papaya mealybug.