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Propagation and Culm Production of Bambusa Vulgaris and Bambusa Polymorpha by Node Cutting.

M.Serajuddola
( Ex.Chief Research Officer)
Silviculture Genetics Division, Bangladesh Forest Research Institute,P.O. Box-273, Chittagong.

Abstract/ Executive Summary:

This paper presents information on propagation and culm production of Bambusa vulgaris and Bambusa polymorpha by node cutting method. Five clumps each of B. vulgaris and B. polymorpha were selected for the study. One culm from each clump of both the species were collected and segmented into one node cutting of 30 pieces in three sections (upper, middle and lower) with sharp saw. Then propagules were developed from node cuttings in the soil bed nursery during the rainy season (June- July). Node cutting of only middle portion of the culm produced roots and rhizomes. Sixty six percent node cutting of B. vulgaris and sixty percent of B .polymorpha of the middle portion produced roots. After having rooted and rhizomed successfully,10 healthy propagules were planted at spacing of 3.5 m x 3.5 m in the field for their growth performance. Node cuttings of B. vulgaris produced 4.28 culms and those of B. polymorpha produced 2.12 culms per clump per year. There is significant difference of culm production at 5% level (t= 3.5678). After 5 years of the planting, the bamboo attained merchantable size and was harvested from the clumps of both the species. This method with no temperature and moisture control facilities and propagation structure was found suitable for the farmer.

Keywords: Bamboo propagation, Culm emergence, Node cutting, Plantation, Rooting percentage.

Location: Bangladesh Forest Research Institute, Chittagong.

Start Date: 00-00-0000

End Date: 00-00-0000

Program Area: Variety and Species

Commodity: Bamboo

Objectives:

( a)To assess the success of culm cuttings in the field condition without rooting media (gravels), propagation

structure (sprinkler with mist chamber) and intensive care (control of temperature and moisture) to produce

bamboo propagules .

(b)To determine the time period required for attaining merchantable culms after plantation.

Methodology:

;The two bamboo species, Bambusa vulgaris and B. polymorpha were chosen for the study. From each species five healthy clumps of two years old culms were selected. The selected culm was segmented into 30 (10 from top, 10 from middle and 10 from bottom of the culm) one-node cuttings with a sharp saw. They were directly planted in the soil bed (as rooting medium) nursery in the rainy season (June-July). The experimental beds were irrigated whenever necessary. The rooting success of the culm cuttings was recorded. In the month of August the rooted and rhizomed culm nodes were carefully uprooted. Then 10 healthy rooted and rhizomed propagules of each species were planted at a spacing of 3.5 m x 3.5 m in Bambusetum, Bangladesh Forest Research Institute, Chittagong. Data were recorded on culm emergence and their growth.

Source of Information: Bangladesh Journal of Forest Science Vol .30 No. 1 : 24-27, 2001

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The node cuttings from middle portion of the culm rooted and rhizomed.The rooting percentage was 66% and 60% in B. vulgaris and B .polymorpha. B. vulgaris produced 4.28 culms and B. polymorpha produced 2.12 culms per clump per year. The difference in average culm production in both the species are statistically significant ( t=3.5678) at 5% significant level.The height and diameter of the emerged culm is gradually increased in successive years in both the species. Up to third year , the average height of the species were not in exploitable size. But in the 4^th and 5^th year the average height became 13.7 m and 13.5 m for B. vulgaris and B. polymorpha. The average diameter became 6.41 cm for B.vulgaris and 7.09 cm for B. polymorpha reaching an exploitable size.Soil as a rooting medium of culm cutting is readily available for the farmers.Without maintaining controlled temperature and moisture these method is suitable for the farmers. In ordinary field condition , farmers can easily apply this technique for raising small -scale village grove bamboo plantation. Bamboo plantation raised from culm cuttings is a very easy method and from the 5^th year of the plantation merchantable bamboo could be harvested.

Knowledge Management: Journal