Abstract
Oxyfluorfen (2-chloro-1-(3-ethoxy-4-nitrophenoxy)-4-(trifluoromethyl)benzene) was applied at a rate equivalent to a field application rate of 3 kg active ingredient/ha to seed and to 1- to 6-week-old seedlings of loblolly pine (Pinustaeda L.) and sweetgum (Liquidambarstyraciflua L.) under greenhouse conditions. Loblolly pine was more tolerant of oxyfluorfen than sweetgum at all ages. Emergence of sweetgum was completely inhibited by oxyfluorfen, while loblolly pine seedling emergence was reduced by 33%. Tolerance to oxyfluorfen by both species increased with increasing seedling age. Except for the 6-week-old loblolly pine seedlings, dry weights of shoots and roots of treated seedlings were lower than controls. Oxyfluorfen injured the apical meristem of sweetgum at all ages but meristems of loblolly pine seedlings older than 2 weeks did not show any injury.
Published Version
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