Basic density and some strength properties of melia azedarach l. and markhamia lutea (benth.) k. schum. grown in agroforestry in Bunda, Mara, Tanzania.

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dc.contributor.authorMatekere, James Peter
dc.date.accessioned2025-02-06T10:03:09Z
dc.date.available2025-02-06T10:03:09Z
dc.date.issued1999
dc.descriptionA dissertation submitted in partial fulfilment for the degree of master of science in forestry
dc.description.abstractBasic density and some strength properties of Melia azedarach L. and Markhamia lutea (Benth.) K. Schum. grown in agroforestry in Bunda district were studied. The overall objective of this study was to assess tire quality of wood of these species in order to improve their utilization. i A survey of end uses of both species was conducted by using structured questionnaires. Tree form was determined by observation on standing trees. Five mature trees aged between 25 to 30 years with good form and free from defects were selected. Basic density was determined by using maximum moisture content method. Strength properties were measured on a Monsanto Tensiometer machine. The main findings were as follows: • Wood of Melia azedarach and Markhamia lutea is already being utilized in Bunda for furniture making and construction work. • Trees of Melia azedarach were straight up to about 7 m with sparse crown cover while those of Markhamia lutea were straight up to about 5 m from the base. • Mean basic density were found to be 436 kg/m and 430 kg/m for Melia azedarach and Markhamia lutea respectively. There was no significant difference in mean basic density between the two species (P>0.05). • There were significant differences in all studied strength properties except work to maximum load for the two species (P<0.05). i • All studied strength properties of Markhamia lutea were significantly higher by an average of about 37% compared with those of Melia azedarach except work to maximum load and cleavage strength. • Variations in basic density and studied strength properties were found between trees and within trees of the same species. Within trees of the same species variation was found in radial and axial directions. • These results suggest that it is possible to improve the wood quality of these species through among other methods selection of trees with the desired properties for further planting. • There were significant relationships between basic density and tire studied strength properties which indicate that it is possible to predict one strength property from basic density hence reduction of cost and time required for testing. There were positive significant relationships between both basic density and studied strength properties with rate of growth measured by dbh and total tree height for both species. The relationships were all significant with dbh for Melia azedarach and not significant for Markhamia lutea.
dc.identifier.urihttps://www.suaire.sua.ac.tz/handle/123456789/6542
dc.language.isoen
dc.publisherSokoine University of Agriculture
dc.subjectMelia azedarach
dc.subjectMarkhamia hitea
dc.subjectAgroforestiy
dc.subjectWood
dc.subjectBunda
dc.subjectMara
dc.subjectTanzania
dc.titleBasic density and some strength properties of melia azedarach l. and markhamia lutea (benth.) k. schum. grown in agroforestry in Bunda, Mara, Tanzania.
dc.typeThesis

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