VARIETAL PREFERENCE AND BIOLOGY OF MULBERRY LEAF-WEBBER, Diaphania pulverulentalis (HAMPSON)
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Date
2009-01-10
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University of Agricultural Sciences GKVK, Bangalore
Abstract
Studies on the air layering and softwood grafting in Jamun was
carried out at the Division of Horticulture, Gandhi Krishi Vignana
Kendra, University of Agricultural Sciences, Bangalore, to standardize air
layering and soft wood grafting in Jamun.
Air layers prepared during June and July months with 7500 ppm
IBA as well as July and August months with 10000 ppm IBA recorded
maximum rooting (100%). Layers treated with 10000 ppm IBA during
September month layering recorded highest number of adventitious
roots.
The softwood grafting in Jamun plants carried out on two species
of rootstocks (Syzygium cumini and S. operculatum) from June to
October. The grafting success was maximum in the month of June in
both S. cumini (94%) and S. operculatum (92%) root stock. The cured
scion shows 96 per cent of success during month of June in S. cumini
and 92 per cent in S. operculatum. Length of sprouts and number of
sprouts found maximum in S. cumini during the month of July in cured
and uncured scions (0.27 and 0.24 cm respectively). The number of
sprouts in S. cumini found maximum in cured scions (3.38) used grafts.
The days taken for sprouting was minimum during the month of
June in cured and uncured scions (11.50 and 12.14 days, respectively)
in S. cumini rootstock used grafts. Significantly minimum number of days
taken for scion sprouting in cured (12.28 days) as well as uncured (12.30
days) scion grafted on S. operculatum.
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