Sowing date impacts the dipterous pests species composition and damage on wheat crop
2006
Krasteva, Kh. | Ventsislavov, V. | Nikolova, G.
The most destructive species were Opomyza florum Fabr. and Phorbia haberlandti Schiner. Wheat sowed on the earlier dates was predominantly damaged by Ph. haberlandti larvae and O. florum larvae. Wheat sowed on the later dates was predominantly damaged by Ph. haberlandti larvae. O. florum appeared in wheat sowing in the stage of first-second leaf and occured by the end of november. Females migrated mature and laid eggs on plantings advanced in the phonological development. Ph. haberlandti occured in the spring. Females preferred to lay eggs in sowings with early phenological stages of development. Larvae of both species hatched between late march and mid april at average temperatures from 9.2 to 9.7oC during this period. In all treatments they damaged predominantly the main stems of wheat.
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