Untersuchungen zur wirkung von decis (Deltamethrin), filitox (Methamidophos) und baythroid (Cyfluthrin) zur saatgutbehandlung gegen larven der brachfliege (Delia coarctata(Fall.)) in winterweizen
Abstract:Die Brachfliege (Delia coarctata (Fall.)) gilt als temporär auftretendes Schadinsekt. Bromophoshaltige Präparate stellten längere Zeit die einzigsten Mittel zur Saatgutinkrustierung gegen Larven des Schädlings im Winterweizen dar. Ihre Wirkungsgrade konnten jedoch nicht immer befriedigen. Aus diesem Grund wurden entsprechende Gefäßversuche (Saatgutbehandlung) gegen Brachfliegen mit den Präparaten Decis (Deltamethrin), Filitox (Methamidophos) und Baythroid (Cyfluthrin) in den Jahren 1986 und 1987 durchgeführt. … Show more
The biology of barley shoot fly Delia flavibasis was studied using resistant (Dinsho and Harbu) and susceptible (Holker) barley cultivars at Sinana Agricultural Research Center, Ethiopia. A higher number of eggs was laid on Holker (17 eggs/female) than on Dinsho (11 eggs/female) or Harbu (12 eggs/female). However, there were no differences between cultivars in preoviposition and total reproductive periods. The shortest time required to complete larval, pupal and total developmental stages from egg to adult emergence occurred when the insect was reared on the cultivar Holker. Pupal weight, adult emergence and adult longevity did not differ between cultivars. The female to male sex ratio was 1:1. This study enabled us to understand the duration of each of the life stages of D.flavibasis, which will undoubtedly aid researchers and growers to design a sustainable management strategy against barley shoot fly.
The biology of barley shoot fly Delia flavibasis was studied using resistant (Dinsho and Harbu) and susceptible (Holker) barley cultivars at Sinana Agricultural Research Center, Ethiopia. A higher number of eggs was laid on Holker (17 eggs/female) than on Dinsho (11 eggs/female) or Harbu (12 eggs/female). However, there were no differences between cultivars in preoviposition and total reproductive periods. The shortest time required to complete larval, pupal and total developmental stages from egg to adult emergence occurred when the insect was reared on the cultivar Holker. Pupal weight, adult emergence and adult longevity did not differ between cultivars. The female to male sex ratio was 1:1. This study enabled us to understand the duration of each of the life stages of D.flavibasis, which will undoubtedly aid researchers and growers to design a sustainable management strategy against barley shoot fly.
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