Published in Scientific Papers. Series B, Horticulture, Vol. LXVIV, Issue 2
Written by Ana-Maria VÎRTEIU, Marius BOLDEA, Ramona ȘTEF, Florin PRUNAR, Silvia PRUNAR, Ioana GROZEA
The economic importance of thrips in the last ten years, in terms of both direct (often quality) and indirect (via viruses and phytoplasmas) damage to protected flower crops, in particular pelargoniums, has in most cases necessitated the adaptation of integrated management practices. A rich thrip fauna, with Frankliniella occidentalis, Frankliniella intonsa, Thrips tabaci, Thrips major being the most abundant species, was revealed by the analysis of the data collected from the greenhouse in Dudeștii Noi (Timiș County). Feeding pattern analysis revealed the consistent presence of very high levels of polyphagous species. In order to maintain a high quality of Pelargomium plants for rapid commercialisation, treatments were carried out in 2023 and the efficacy of bio-insecticides to control thrips species was evaluated. The results showed that the chemical products had the highest efficacy, namely Exalt with the active ingredient spinetoram and among the biological products used, Laser 240 SC (spinosad as active ingredient) had the highest efficacy. The least effective products used to control thrips were those based on diatom powder and neem oil.
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