Greener Journal of Agronomy, Forestry and Horticulture Vol. 2 (1), pp. 008-013, February 2014.
ISSN: 2354-2306 © 2013 Greener Journals
Manuscript Number: 071513731
Relationship between some Growth Parameters and Browse Biomass Produced from Ailanthus excelsa Tree in Kordofan, Sudan
J. B. Jadalla1, A. A. Khatir2.,E. M. Dawelbait*3 and
S. A. M. Ali4
1University of kordofan, Faculty of Natural Resources and environmental Studies, Sudan.
2,3Agricultural Research Corporation, Elobeid Research Station, Sudan.
4Peace University, Sudan.
*Corresponding Author’s Email: elnazeir_m @ yahoo. com
This study was conducted in Elobeid town, Sheikan Locality, North Kordofan State (29.350-30.300E and 12.250-13.450 N) and Dilling town, Dilling Locality, South Kordofan State (alt. 90-120 N and lat. 29-310E) during 2009-2010 with the objective of studying browse biomass production, estimation of Ailanthus excelsa as affected by location and development of Regression equations for prediction of biomass from the tree depending on growth parameters. From the two sites, forty similar aged, normally growing trees were selected and leaf biomass was harvested, weighed fresh, sun dried and oven dried. Stem diameter, twig diameter, crown diameter and tree height were measured for each tree. T test was used to examine the effects of site on foliage biomass production that was calculated as ton/hectare. The estimated foliage biomass was correlated to the physical parameters measured. Regression equations were developed between the estimated foliage biomass and the growth parameters of the tree. The results indicated that trees in Dilling produced greater amount of foliage biomass than those in Elobeid. The study revealed that biomass production in Elobeid was 1.2 ton per hectare, compared to 2.3 ton per hectare in Dilling. It was found that in Elobeid, the biomass production was highly correlated to twig diameter and least correlation was observed between biomass and tree height whereas in Dilling, biomass production was highly correlated to tree height and least correlations were observed between biomass and the other parameters. The study concluded that site of growth had significant effects on foliage biomass production of A. excelsa. The amount of biomass was highly correlated between twig diameter in Elobeid and tree height in Dilling and the twig diameter developed best regression equations for biomass estimation forAilanthus excelsa in Elobeid and El Dilling. Therefore, it can be recommended that more research should be carried out in different areas of the country where this tree is naturalized to investigate the effects of site and ecological factors on biomass production of the species and relationship between biomass produced and growth parameters in each site.
Keywords: Browse biomass, Ailanthus excelsa, growth parameters.