16. Influence of oxyfluorfen on weed control and growth of fruit-bearing of apple trees

The aim of the present study was to test the influence of two rates of a. i. oxyfluorfen (Goal 2 E) on the weed control and growth of fruit-bearing apples trees. The following variants were set: a1 – control (untreated); a₂ – oxyfluorfen (Goal 2 E in rate 250 ml/ da); a₃ – oxyfluorfen (Goal 2 E in rate 500 ml/ da). The number and the weight of weeds were reported on 30^th, 60^th and 90^th day after treatment. The indexes for annual shoot length increment and stem cross section area were studied after the end of vegetation. The obtained results showed that oxyfluorfen had a three-mounth weed control efficacy. Only weed species unsusceptible to oxyfluorfen were present. A depressing effect on the tree growth expressed by the annual shoot length and stem cross section was not detected.