University of Khartoum

Regeneration of Sclerocarya Birrea (A. Rich.) Hochst. Subsp. Birrea at Rashad Locality in the Nuba Mountains, Sudan

Regeneration of Sclerocarya Birrea (A. Rich.) Hochst. Subsp. Birrea at Rashad Locality in the Nuba Mountains, Sudan

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Title: Regeneration of Sclerocarya Birrea (A. Rich.) Hochst. Subsp. Birrea at Rashad Locality in the Nuba Mountains, Sudan
Author: Daldoum, Daldoum Mohamed Ahmed; Massuad, M.M.
Abstract: This study aimed to investigate into the regeneration of Sclerocarya birrea subsp. birrea (A.Rich.) Hochst, on the Nuba Mountains, Rashad District, Sudan (latitude 11° 51´ N and longitude 31° 4´ E), during the years 2005 and 2006. The investigation procedures consisted of assessment of natural regeneration; regeneration by seed broadcasting and regeneration by seed sowing and seedlings transplantation in pits. The pits were excavated in unprepared land, cultivated land and cultivated land with furrows. Natural regeneration of S. birrea was scanty for there was only 210 seedlings ha-1, assessed immediately after the rainy season. Yet the survival rate of seedlings was even poorer as only 10% of them survived after a lapse of one year. Germination of seeds sown by broadcasting on unprepared land was about 25% in 4 weeks time. Seedling survival assessed after 3 months from sowing date was about 72.5%. It declined to only 40% after one year. Seeds sown in pits excavated in unprepared land (NP), plowed (P) and plowed with furrows land (PF) gave 100% germination after a lapse of 4 weeks. Seedling survival percentage was higher in plowed land with furrows (77.8) as compared with pitted and plowed lands which gave 55.6% and 61.1%. Significant differences were found for the seedlings height and diameter between these treatments. The highest growth parameters studied were recorded in the treatment PF followed by P and NP treatments. Concerning the seedling transplantation treatments, the results showed that there were significant differences in seedling height and diameter between NP and the two other treatments; while there were no significant differences in the parameters between P and PF treatments. The best seedling growth was recorded for the PF treatment. Seedling survival in these treatments ranged between 56 and 86%. S. birrea can be easily established in the field by seeds or seedlings without much land preparation but simply in pits. However, to achieve 2 a satisfactory establishment of this species in all cases good protection, against animals, in all growth stages is obligatory. In view of the numerous benefits drawn from S. birrea as outlined in the literature and particularly from South Africa, the findings of this study will support the baseline information necessary to put this species under management prescription to exploit its potentials in the northern savannah region.
URI: http://khartoumspace.uofk.edu/123456789/23899


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