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Use of young buddings as a planting material

By: Contributor(s): Material type: TextTextPublication details: Papers presented at the IRRDB seminar 5-8 November 1996, Sri Lanka p11Subject(s): Summary: High field establishment rate, uniform growth, easy handling, low cost of production, undisturbed tap root system, etc are some of the advantages of young buddings. In young buddings, seedling plants grown in polybags are grafted with green buds at the age of 3-4 months. Bud grafting success of all RRIC clones recommended in groups i, ii & iii (ie RRIC 100, RRIC 102, RRIC 110, RRIC 117, RRIC 121, RRIC 130 and RRIC 133) and all PB clones recommended in group i, ii, iii & iv (ie PB 28/59, PB 217, PB 235 & PB 255) was 90-100;. The bud grafting success was independent from the growth stage of the top most leaf whorl and the cut back time of the stock plant (either 2 weeks or 4 weeks). The quality of stock plants and the budwood affected the budgrafting success as well as the growth of the grafted bud. Selection of early germinating seeds by using a germination bed proved to be essential to obtain buddable girth in 3-4 months. Further, a positive correlation was found between the growth of stock plant and that of the scion. The length of the snag and whether the leaves were present or not affected the sprouting time and the initial growth of the grafted bud. The incidence of taproot penetration could be reduced by placing two circles of guage 500 polythene at the bottom of the bag prior to filling with soil. Use of young buddings as planting material increases the productivity of plantations mainly by maintaining the correct stand together with uniform growth in the field while contributing toward reducing the immature phase. The clone that the budded plants belong can be identified at 2-3 leaf whorl stage and this will be an added advantage in young buddings when compared to bare root budded stumps.
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High field establishment rate, uniform growth, easy handling, low cost of production, undisturbed tap root system, etc are some of the advantages of young buddings. In young buddings, seedling plants grown in polybags are grafted with green buds at the age of 3-4 months. Bud grafting success of all RRIC clones recommended in groups i, ii & iii (ie RRIC 100, RRIC 102, RRIC 110, RRIC 117, RRIC 121, RRIC 130 and RRIC 133) and all PB clones recommended in group i, ii, iii & iv (ie PB 28/59, PB 217, PB 235 & PB 255) was 90-100;. The bud grafting success was independent from the growth stage of the top most leaf whorl and the cut back time of the stock plant (either 2 weeks or 4 weeks). The quality of stock plants and the budwood affected the budgrafting success as well as the growth of the grafted bud. Selection of early germinating seeds by using a germination bed proved to be essential to obtain buddable girth in 3-4 months. Further, a positive correlation was found between the growth of stock plant and that of the scion. The length of the snag and whether the leaves were present or not affected the sprouting time and the initial growth of the grafted bud. The incidence of taproot penetration could be reduced by placing two circles of guage 500 polythene at the bottom of the bag prior to filling with soil. Use of young buddings as planting material increases the productivity of plantations mainly by maintaining the correct stand together with uniform growth in the field while contributing toward reducing the immature phase. The clone that the budded plants belong can be identified at 2-3 leaf whorl stage and this will be an added advantage in young buddings when compared to bare root budded stumps.

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