ADVICE ON PLANTING GRAFTED VINES
After buying grafted grapevine, cut its roots to the size of the fist (8-10cm) before planting. Plant it ina sufficiently moist soil in March and April, in Koper area even in February. Dig a hole the size of 40 x 40 cm and 35 cm deep. At the bottom of the hole, form a mound from a stable soil, place the bottom of a rootstock on top of it and evenly spread the vine roots. During planting, while forming a mound, make sure that the graft is at least 5 to 8 cm above the soil level. Push the soil back over the roots and firm it in. Add 1-2 litres of compost or Humovit TM substrate. During late planting in dry soil, the graft must be watered.
ADVICE ON ACHIEVING BETTER GRAFT GROWTH IN THE FIRST YEAR AFTER PLANTING IN HEAVY CLAY SOIL
Plant as late as possible, preferrably in the second half of April when the soil is appropriatelly warm and humid. We recommend planting in a furrow because it provides light, moist and airy soil. You should by no means use a pressurized water jet for planting or usea burr to drill a planting hole because in such instances grafts are planted closer to the surface.
THROUGHOUT THE YEAR
It is of vital importance to protect the grafts from fungal diseases, such as Downy Mildew and Oidium.Downy Mildew, caused by Plasmopara Viticola, significantly damages vineyards duringgrape picking in September, because it is an optimal time for its development and the vinegrowers are of belief that additional spraying is not necessary.The symptoms od Downy Mildew in September are different than the ones in the summer. The oily circular spots no longer appear on the upper side of the leaf but a white downy fungal growth (sporangia) will appear on the underside of the leaf.The infected leaves fall off within a week, vine shoot does not mature and there is a high chance that the graft will not produce buds in the spring, although the vine shoot was green during the pruning.