Regeneration

Regeneration

    Natural:–
    • It is seldom found growing gregariously,
    • It regenerates naturally by seeds, coppice and root suckers
    • Fruit ripening coincides with rainy season; fallen fruits germinate within a fortnight giving a thicket of seedlings under mature tree.
    • Germination is epigeal
    • Mature tree comparatively have short tap root and number of horizontally growing lateral roots
    Artificial :-
    • It can be raised easily through direct sowing, planting out of entire plants or stump planting
    Seed collection and storage:
    • Fruiting starts early in South India and late in North India
    • Seeds are preferably collected in June-July or some time seeds swept from the floor as soon as they fall down
    • Seed do not require any pre-sowing treatment
    • De-pulping and cleaning the seed considerably improve germination percentage
    Nursery technique:
    • Sowing in raised nursery beds is done in June in drills 15cm apart;
    • The seeds being sown 2.5cm apart in the lines.
    • They should be lightly covered with soil since the emerging radicles are eaten by rodents.
    • Depth of sowing is to 2.5cm.
    • Seed can be sown in poly bags (22cm×9cm) and later transplanted to 30cm×16cm size poly bags.
    • Pricking out of seedlings or wilding is done at three leaves stage into polythene bags.
    Direct Sowing:
    • It is done by dibbling in bushes, broadcast sowing, sowing in lines or patches, in trenches, sunken beds or circular saucers etc.
    • Especially sowing in lines or patches has been employed under taungya system.
    Planting technique:
    • One year old seedlings are considered the best over either two years or below one year.
    • Planting should be done in July-August during rainy period and stopped in the non-rainy days
    • Winter planting is unsuitable for neem.
    • Cleaning around the pits should be done at the time of planting.
    Stump planting:
    • It is carried out in 30 cm3 pits as soon as rain break.
    • Stumps are usually prepared from two year old seedlings,
    • One year old seedlings of fertilized nurseries can also be used.
    Vegetative propagation:
    • It is propagated by air-layering or by rooting stem cuttings and root cuttings.
    • Successful air-layering was achieved by treatment with 0.1 per cent Indole-butyric acid or naphthalene acetic acid.
    Economic importance: Almost every part of neem tree is useful from its roots, trunk, bark, leaves, flowers, fruits and seeds in day to day life.

Last modified: Friday, 19 October 2012, 7:55 AM