Pesticidi i fitomedicina 2014 Volume 29, Issue 3, Pages: 177-185
https://doi.org/10.2298/PIF1403177N
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Effects of biological insecticides NeemAzal T/S and pyrethrum FS EC and their interaction with organic products in treatments of pea aphid Acyrthosiphon pisum (Harris) (Hemiptera: Aphididae) on Pisum sativum (L.)
Nikolova Ivelina (Institute of Forage Crops, Pleven, Bulgaria)
Georgieva Natalia (Institute of Forage Crops, Pleven, Bulgaria)
The efficacy and effects of two biological insecticides, NeemAzal T/S® and
Pyrethrum FS EC, applied individually and in combination with Polyversum (a
biological growth regulator and fungicide) and Biofa (an organic foliar
fertilizer), in controlling Acyrthosyphon pisum population density were
studied. Nurelle D (a synthetic insecticide), applied alone and in
combination with Flordimex 420 (a synthetic growth regulator), was used as a
standard. The products were applied once (at budding stage) or twice (at
budding and flowering stages). Twenty-four variants were studied. The
interaction of Pyrethrum with Biofa was the most efficient variant of the
biological products, causing a reduction in aphid density that reached 48.2%
after double treatment, while Pyrethrum+Polyversum (42.5%) was the second
most successful treatment. The combination of Pyrethrum with Biofa achieved
the highest efficacy and synergism and their efficacy approached that of the
synthetic insecticide.
Keywords: forage pea, acyrthosiphon, biopesticides, insecticides