Efficacy of biological formulations against Neoglocianus maculaalba and Dasineura papaveris in Papaver somniferum

Pavel Kolařík, Jiří Rotrekl and Karla Kolaříková
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Jiří Rotrekl: Agriculture Research Ltd, Troubsko, Czech Republic
Karla Kolaříková: Agriculture Research Ltd, Troubsko, Czech Republic

Plant Protection Science, 2019, vol. 55, issue 2, 123-128

Abstract: The effectiveness of selected insecticides against capsule weevils (Neoglocianus maculaalba) and capsule midges (Dasineura papaveris), which are the main pests of breadseed poppy, was verified in a small-plot field experiment in 2015-2017. The effect of foliar application was evaluated according to boreholes on capsule surfaces caused by the feeding of capsule weevil adults and larvae numbers in capsules collected approximately 4 weeks after application. Biological efficacy of the tested biological formulations Spintor (active ingredient spinosad 240 g/l) in dosage 0.4 l/ha and NeemAzal T/S (active ingredient azadirachtin A 10.6 g/l) in dosage 3 l/ha against N. maculaalba larvae in individual years of monitoring ranged from 46.4% to 77.7% and from 67.7% to 82.9%, respectively. The effect of the formulation Prev B2 (boron ethanolamine corresponding to 2.1% of water-soluble boron) in 0.3% dosage was in the range of 59.5-81.9%. Their efficacy did not differ significantly compared to the registered chemical standards Biscaya 240 OD (active ingredient thiacloprid 240 g/l) and Decis Mega (active ingredient deltamethrin 50 g/l). Therefore, these biological insecticides are potentially useful for the effective control of N. maculaalba and D. papaveris population densities and reduction of damage they cause to breadseed poppy.

Keywords: plant protection; capsule weevils; capsule midges; thiacloprid; spinosad; azadirachtin; boron ethanolamine (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:55:y:2019:i:2:id:25-2018-pps

DOI: 10.17221/25/2018-PPS

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