Effect of some soil herbicides on the vegetative habits of peach seedling rootstocks in a nursery

摘要

The study on the effect of applying the combined soil-applied herbicide Metofen (metolachlor + oxyfluorfen) and the contact soil herbicide with foliar activity Pledge 50 WP (flumioxazine) on the vegetative habits of peach seedling rootstocks was carried out in the period 2010-2012 at the Fruit-Growing Institute -Plovdiv in a nursery first year. The soil herbicides were applied in the period 15-25 March, before beginning of vegetation.The following variants were included in the study: 1. Control (untreated, hand-weeded); 2. Metofen - 120 ml/da; 3. Metofen - 240 ml/da; 4. Pledge 50 WP -8.0 g/da; 5. Pledge 50 WP - 20.0 g/da. The results showed that the soil herbicides included in the study, provided a full control of weed infestation at the applied rates. The efficient herbicide post-effect lasted for 3,5-4 months. No visual symptoms of phytotoxicity were observed in the peach rootstocks treated with herbicides. The results showed higher values of plant height and thickness in thearea of grafting in the herbicide treated variants compared to the control.