ABSTRACT
Field trials in 1985 clearly showed that seedbed treatment of cauliflower with chlorfenvinphos 1 g a. i. per m2 had the best effect on Delia radicum larvae followed by carbofuran granules 0,05 g a.i. and carbosulfan 0,075 g a.i. per m row at transplanting.
When applied sowing soil treatment with chlorfenvinphos 4 kg a. i. per ha, carbofuran granules 0,05 g a. i. and carbosulfan 0,075 g a. i. per m row had the best effect. Seed treatment and spraying gave unsatisfactory results.
The number of D. radicum pupae were greatly reduced by chlorfenvinphos (65%), carbofuran (51%) and carbosulfan (38%) when chlorfenvinphos was used as soil treatment.
The number of pupae parasitized by Aleochara bilineata and Trybliographa rapae dropped from 78% in untreated to 57% with chlorfenvinphos and 66% with carbosulfan.
