Grapes |
Propagation
Hardwood Cuttings
- For obtaining hardwood cuttings, 3-4 year old disease free vigorously growing mature vines, which has produced a good crop in the previous year should be selected after October pruning.
- Cuttings from very young and very old vines or those subjected to heavy fruiting during the previous year should be avoided.
- Medium-size canes having internodal length of 8-10 cm are desirable. 30-45 cm long cuttings of pencil size thickness with atleast 3-4 nodes are cut from the middle portion of the selected canes.
- A cut should be made straight across 1cm below the node at the lower end of the cuttings, while slanted cut at the top is taken 2-3 cm above the bud.
- The cuttings are then immediately planted in bed or in polythene bags in the nursery.
- In case of delay in planting, the cuttings are stored by burying in moist sand or sawdust at 5 -7.50 C.
- In nursery, the cuttings are planted in well-prepared flat beds of 1.2m width of convenient length.
- A mixture of Leaf mould, FYM, Sand and Super phosphate is thoroughly mixed in the soil before forming the bed. Cuttings are planted 20 cm apart in lines.
- While planting the cuttings at least two nodes should be inside the soil with one bud above the soil.
- Care should be taken to maintain the polarity while planting the cuttings, since grape cuttings planted upside down do not grow.
- Soil is pushed back into the furrows and pressed firmly around each cutting.
- Cuttings can also be planted in polythene bags. Polybags (25x15 cm and150-200 gauge) are filled with a mixture of soil, sand and FYM in equal proportion along with Superphosphate.
- One or two cuttings may be planted in each bag. Preventive sprays to control common diseases are given during the growing period
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Chip Budding
- Chip budding is the best method for propagating vines on rootstocks.
- In this method a wedge-shaped piece containing the bud (chip) along with a portion of wood is removed from the desired variety.
- The scion buds should be plump and taken from well-mature healthy canes, equal in maturity level and thickness to that of the rootstock.
- A notch, sufficient to accommodate the chip, is made on the rootstock 10-15cm above the ground.
- The chip is places in this notch and wrapped with a polythene strip exposing the bud. Normally two budding are done on every mature stem 15 cm apart.
- When these buds sprout and grows to about 15 cm, the rootstock portion above it is cut off.
- The sprouts on the rootstock below the bud joint are removed regularly
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