Application of foliar microfertilizer Burall in vine nursery

摘要

A study has been carried out in IVE-Pleven for finding out the effect of foliar microfertilizer Burall application and determining the optimal number of sprayings after treatment of the vine nursery with the herbicide Lumax 538 SC. The trial was conducted with Bolgar variety grafted to Berlandieri X Riparia S04 rootstock with single, twice and three times application of Burall.Bolgar variety shows high sensitivity to Lumax 538 SC and the yield of standard rooted vines from the variant without Burall and single time introduction of the foliar microfertilizer did not differ significantly from that of control, remaining slightlylower. It was accounted an increase in the yield in the variants with two and three treatments. The maximum effect was found after three times spraying of the grafted cuttings. Applied in this manner, Burall results in mature growth with greater length and mass.