Thrips complex in ornamental plants: Their abundance and management

Thrips are common pests in ornamental and nursery crops, characterized by their piercing-sucking mouthparts. Their life cycle includes egg, larva, prepupa, pupa, and adult stages. Both larvae and adults feed on plant sap from leaves, stems, flowers, and buds, causing chlorosis, necrosis, plant weakening, and reduced productivity or aesthetic value. In the present greenhouse study, we conducted a comparative study to determine the thrips complex and their abundance in various ornamental plants (Chrysanthemums, Verbena, Petunia, Dianthus, and Lantana) across different sampling dates. Additionally, we conducted an efficacy trial with insecticides chosen by growers. Various thrips species were observed, with higher numbers of adults and larvae found in flowers than in leaves. Petunia flowers exhibited the highest thrips populations. This study provides valuable insights for producers on thrips population dynamics and damage patterns, aiding in effective pest management strategies.