Abstract
The effects of different rates of pirimicarb on aphids and syrphid larvae in winter wheat were studied from 1991 to 1993. The numbers of aphids and pre-imaginal stages of aphid-specific predators were determined visually in four replicated randomised plots. The years showed strong differences in aphid infestation, syrphid migration and oviposition, and larval density probably because of different weather conditions. The results indicate high efficacy of primicarb to aphids but also to syrphid larvae at the currently recommended rate (100 g a.i. ha −1) and even at 50 g a.i. ha −1. A certain degree of selectivity was obtained at 25 g a.i. ha −1.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
