Improvement of propagation technology in Populus deltoides Bart. under nursery condition
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Date
2017
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Punjab Agricultural University, Ludhiana
Abstract
The present study entitled ‘Improvement of propagation technology in Populus deltoides
Bart. under nursery condition’ was carried out at the Experimental area of Department of
Forestry and Natural Resources, Punjab Agricultural University, Ludhiana during the year
2016-17. The study was conducted to know the suitable time of transplanting, polythene bag
size and cutting size and to evaluate the growth parameters of plants under nursery conditions.
Two cutting sizes i.e. large 15cm and small 10cm and two polythene bag sizes i.e. large 12cm
x 7cm and small 8cm x 4cm were used in the present investigation. First transplanting was
done in the first week of May and second transplanting in the first week of June. The
observations were recorded for survival per cent and various growth parameters of populus
deltoides under nursery conditions i.e. plant height, collar diameter, root length, root spread,
shoot fresh and dry biomass. The survival per cent was more in the treatment T1 (May
transplant + Large polythene bags + Large sized cutting) as compare to the other treatment
combinations. Size of polythene bags influenced the growth of plants. It was noticed from the
data that cuttings which were raised in large polythene bags (12cm x 7cm) showed better
growth as compared to the cuttings raised in small polythene bags (8cm x 4cm). Cutting
length and time of transplanting also had a pronounced significant effect on the growth
parameters. The large size cuttings (15cm) raised in large polythene bags (12cm x 7cm) and
transplanted in the month of May was found to best in comparison to all other treatment in the
study. In general, the growth of plant was better in control except survival per cent.
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