METHOD AND DEVICE FOR PRODUCING ANNUAL REPRODUCTION MATERIAL FOR TREE NURSERIES, AS YOUNG ROOTS FOR IMMEDIATE PLANTING

The invention method for production of one year old nursery propagation material, having undercut quality and branched root system, ready to plant, applying the usual soil preparation, water- and nutrient addition and plant protection-where at spring of the first year, near to the surface on the root system (11) of the plant (9), sprout 1-2 months before-sowed advantageously in bed, or in rows-early undercutting will be carried out advantageously in 5-7 cm-s cutting depth (16) from the soil level (10). The root system of the plant, produced with the early undercutting method can be recognized from its branched root system (14), starting from 5-10 cm-s (16) to the ground level. The equipment, realizing the early undercutting belongs also to the invention that has a tearing accessory. It is typically formed from vertical coulters (5a, 5b) fixed stiffly to the supports (3a, 3b), and tense horizontal cutting threads (6), fixed with detachable fixing elements on the lower part of the coulters-from twisted steel wire, wire thread, nylon string, or thin saw edge.