Reproduction of currant is most extended by the lignified shanks which is made when the plant passes into rest phase: in September-October for blackcurrant and jostaberry, in August for red and white currant. In this case the okoreneniye of shanks occurs only in the spring of the next year therefore full-fledged plants are formed for year later, than at reproduction by green shanks.
Reproduction of currant shanks in the fall
At reproduction by wood shanks it is necessary to wait for full forming of pazushny kidneys and lignification of escapes of the current year. As well as in case with green shanks, for reproduction of currant choose the lignified radical escapes of the current year without damages in the fall. Thickness of escapes has to be not less than 7 mm. By knife in the lower part of escape do diagonal cut one centimeter lower than kidney. The planting stock is done such length that 6-8 kidneys were located on it, the top cut is done to straight lines, on half-centimeter kidneys are higher. From one escape from one to three such shanks can turn out. The top kidney is removed. The cut shanks of currant keep in korneobrazovaniye stimulator solution according to the instruction to medicine, submerging them approximately to the middle, then land in the prepared substrate.
For autumn landing of wood shanks of currant prepare shkolka. For this purpose dig out trench on depth of 30-40 cm, mix excavated soil with humus (peat) and bank sand in the ratio 2:2:1, if necessary add ashes or egg shell and potash fertilizer. Fill up trench to half with the received mix. In friable dry substrate stick shanks obliquely, at an angle 45 degrees, at distance not less than 30 cm from each other. When all shanks are landed, slightly condense substrate between them. Then fill up the remained mix in trench so that over surface about one upper kidney had, and penultimate has been only slightly powdered. Thoroughly spill trench. Now mulch your shkolka 4-5-centimeter layer of dry humus or sunflower pod for protection of the earth from drying. Further water shkolka of times a week to the first frosts.
Reproduction of currant shanks in the spring
At once it is not obligatory to land the shanks prepared in the fall since roots on them will begin to be formed only in the spring anyway. Therefore it is necessary to keep them till spring. It can be done in several ways: in the fridge (if there is not a lot of planting stock), in basement/cellar, prikopanny in the earth, in boxes with damp sawdust in the open air. For the best safety of shanks before bookmark on storage their minute is kept in 1 percent solution of copper vitriol, and cuts process the garden thief, wax or paraffin.
In the spring when soil gets warm on 15-20 cm in depth, prepare shkolka as well as in the fall. Remove wax from the lower cut of shanks and do by sharp knife several vertical notches from the lower kidney to cut – so backs will be formed more actively. Cuts pripylyat korneobrazovaniye stimulator powder (Kornevin or Geteroauksin) and land shanks in shkolka at an angle of 45 degrees at distance of 30 cm from each other, leaving two kidneys over surface. The earth is watered and mulched. The first fertilizing of saplings by nitrogen fertilizer is carried out at formation of two leaves.