Efficacy of spirotetramat in the control of the currant-sowthistle (Hyperomyzus lactucae l.) on blackcurrant plantations in Poland

Spirotetramat applied as Movento 100 SC at dose rates: 0.7 and 1.0 L·ha^-1 in a single treatment just after blossom resulted in a very high reduction of currant-sowthistle aphid - Hyperomyzus lactucae L. (Aphidoidea, Aphididae) on blackcurrants ‘Ojebyn’ and ‘Titania’. The results obtained with this pesticide applied at both tested dose rates: 0.7 and 1.0 L·ha^-1 were comparable. The efficacy of spirotetramat at 7th day after treatment was similar or slightly poorer compared to standard insecticides, but at 21st day after treatment a higher reduction of aphids than with reference insecticides such as pirimicarb (Pirimor 500 WG at the rate 0.75 kg·ha^-1), thiacloprid (Calypso 480 SC 0.15 L·ha^-1) and thiamethoxam (Actara 25 WG at the rate 0.1 kg·ha^-1) was recorded. With regard to environment safety and biodiversity it must be underlined that on plants treated with Movento 100 SC, high populations of Coccinellidae (both larvae and beetles), Syrphidae (larvae) and Phytoseiidae were noted.