Influencing factors on growth performance of 5, 7, 10, and 12 year old Pinus Caribaea Grown at Butainamwa Village in Bukoba Rural District Tanzania.

Magayane, Mutterson Baltazar (2022) Influencing factors on growth performance of 5, 7, 10, and 12 year old Pinus Caribaea Grown at Butainamwa Village in Bukoba Rural District Tanzania. Masters thesis, The Open University of Tanzania.

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Abstract

This study assessed influencing factors on growth performance of 5, 7, 10 and 12-year-old pinus caribaea grown at Butainamwa village in Bukoba Rural District, Tanzania. Specifically, the research objectives were to determine strata mean tree stands parameters DBH and Height at juvenile stage of 5 years old plantation; at first thinning stage of 7 years old plantation; at second thinning stage of 10 years old plantation; and at sale stage classes of 12 years as base of bargaining power as well as Smallholder‟s decisions making, Socio economic and demographic characteristics and other influencing factors to implement or, to not implement better silvicultural management. The actual total population strata stand 18 606 for this study at Butainamwa village comprised Sub-village Bugyabuso strata stands 8 469 and Sub-village Bweshamuzi strata stands 10 137. Total actual population at age of five years was 4 929, at age of seven years was 3 989, at age of ten years was 4 844 and Similarly at age of twelve years was 4 844. Primary data extracted on the field data forms involved direct measurement from each selected strata stand drawn optimal Temporary Sample Plots (TSPs) of 10m x 20m with 40 stands collected variable parameters DBH (cm) and Height (m); and Secondary data from various sources was summarised, coded and analysed. Based on the ANCOVA, stem form shows good growth rate and that DBH cm varies according to the area (sub village) as the p value is less than 0.05 and that the height is also statistically significant as p value for the height is less than 0.05. Also, variations in diameter (DBHcm) of trees is 99.3% determined by height (Hm) of the tree as partial η² (η²p) is 0.993. The area of the place (sub villages) explains 3.9% variations in tree diameters. Keywords: Diameter, Height, Smallholder, Stem form.

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