Effect of spacing on performance of teak at Longuza Tanga Tanzania

Sibomana G., . and Makonda F.B.S., . and Malimbwi R.E., . and Chamshama S.A.O., . and Iddi S., . Effect of spacing on performance of teak at Longuza Tanga Tanzania. pp. 176-187. ISSN 0128-1283

Sibomana G. Makonda F. B. S. Malimbwi R. E. Chamshama S. A. O. Iddi S 1997. Effect of spacing on performance of teak at Longuza Tanga Tanzania. The performance of teak (Tectona grandis) planted at four square spacings (1.5 2 2.5 and 3.0 m) at Longuza Tanga in Tanzania was assessed. The variables studied were diameter at breast height (dbh) total height and height to the first live branch survival number of branches basal area and volume production at ages 1 3 7 and 9 y and basic density and some strenght properties at the age of 14 y. Results showed that dbh number of branches total height basal area basic density and some strength properties were significantly affected by spacing (p 0.05). The diameter at breast height and number of branches increased with increasing spacing while basal area decreased. All other variables were not significantly affected by spacing. A spacing of 3.0 m resulted in large diameter trees and later thinnings with less a total volume per hectare. The current spacing of 2 m resulted in higher volume per hectare of small sized trees which could be improved by thinning. Its recommended to continue with this spacing and the current thinning schedule until information on the economic implications of alternative regimes is available.

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Abstract

Sibomana G. Makonda F. B. S. Malimbwi R. E. Chamshama S. A. O. Iddi S 1997. Effect of spacing on performance of teak at Longuza Tanga Tanzania. The performance of teak (Tectona grandis) planted at four square spacings (1.5 2 2.5 and 3.0 m) at Longuza Tanga in Tanzania was assessed. The variables studied were diameter at breast height (dbh) total height and height to the first live branch survival number of branches basal area and volume production at ages 1 3 7 and 9 y and basic density and some strenght properties at the age of 14 y. Results showed that dbh number of branches total height basal area basic density and some strength properties were significantly affected by spacing (p 0.05). The diameter at breast height and number of branches increased with increasing spacing while basal area decreased. All other variables were not significantly affected by spacing. A spacing of 3.0 m resulted in large diameter trees and later thinnings with less a total volume per hectare. The current spacing of 2 m resulted in higher volume per hectare of small sized trees which could be improved by thinning. Its recommended to continue with this spacing and the current thinning schedule until information on the economic implications of alternative regimes is available.

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Item Type:	Article
Additional Information:	Summaries (En Ms)
AGROVOC Term:	TECTONA GRANDIS
AGROVOC Term:	FOREST TREES
AGROVOC Term:	SPACING
AGROVOC Term:	CROP PERFORMANCE
AGROVOC Term:	GROWTH
AGROVOC Term:	DENSITY
AGROVOC Term:	THINNING
AGROVOC Term:	TANZANIA TECTONA GRANDIS
AGROVOC Term:	ARBOLES FORESTALES
AGROVOC Term:	ESPACIAMIENTO
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:52
URI:	http://webagris.upm.edu.my/id/eprint/17639

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