Filmcoating of cauliflower seed (Brassica oleracea L. var. botrytis L.) with insecticides to control the cabbage root fly (Delia radicum)

Seasonal Flight, Optimal Timing and Efficacy of Selected Insecticides for Cabbage Maggot (Delia radicum L., Diptera: Anthomyiidae) Control

“…There was no literature to support that any other Delia species is damaging to cabbage in the region of Ogulin and the flies on the YST were identified to genus level only. Workers from Croatia (1–6) always mentioned Delia radicum as the main pest of cabbage and this species is always mentioned as the most serious pest of the brassica crops in Western Europe [ 8 , 19 , 21 ]. Additionally, Sandrine et al 2006 [ 23 ] indicated that the distribution of the most similar species, Delia floralis is more restricted to Northern regions with lower temperatures and does not exist at latitudes below 50° N. Therefore, all Delia flies on the traps were considered as D. radicum .…”

“…Seed treatment by different insecticides has been advocated as an effective control strategy against cabbage maggot larvae [ 21 , 30 , 45 , 46 , 51 , 52 , 53 , 54 ]. For seed treatment, various insecticides are recommended: chlorpyrifos [ 21 , 52 , 53 ], isofenphos [ 52 ], spinosad [ 30 , 51 ], thiamethoxam, clothianidin and abamectin [ 51 ], chlofenapyr, cyromazine and fipronil [ 52 ]. No significant negative effect ongermination was observed in either of these studies.…”

“…The larvae and/or pupae were counted on each plant, in the roots and in the part of the stem that was below the ground as proposed by Ester et al . [ 21 ].…”