Establishment of Nursery-Raised-Seedlings of Acacia nailotic in Flooded Areas (maaya’s) in Khour Al Atshan, Sennar State - Sudan
Establishment of Nursery-Raised-Seedlings of Acacia nailotic in Flooded Areas (maaya’s) in Khour Al Atshan, Sennar State - Sudan
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Date
2015-04-22
Authors
Ali Ibrahim Ahmed, Abbas
Journal Title
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Publisher
UOFK
Abstract
This study investigated the success of Acacia nilotica regeneration by
nursery raised seedlings in comparison with seed broadcasting in flooded
areas (maaya's). The study was conducted in Khor Al Atshan reserved
forests and consisted of three field experiments: regeneration by seeds
broadcasting after flooding, by seedling transplanting after flooding and
before flooding. Survival and seedling growth was evaluated and the
relationship between growth parameters (length and girth) and days after
seedling transplantation was quantified.
In the first experiment, treated seeds of A. nilotica were broadcasted in
protected areas and were evaluated for germination and seedling survival.
Germination percent was low (4%) and the survival seedlings died after the
first flooding of the Khor.
In the second and third experiments, nursery-raised seedlings were
transplanted before and after flooding of the Khor at three depths (15, 30 and
45 cm). Seedlings planted just before the flooding were unable to with stand
flooding and died due to submersion and suffocation by water (seedling
length was 35 cm). However, those planted after flooding showed a success
of about 85.8 % survival due to the extended growth season that enable them
to perform an increase in both height and diameter growth. The shallowest
soil depth had a significant effect on seedling length where depth 15 cm
showed higher shoot length. However, seedling girth was not affected by
soil depth. Regression showed significant relations between each of seedling
length and girth with days fro transplanting. The study recommends use of
seedlings in establishment of Acacia nilotica in flooded depressions and
maaya’s, particularly after flood receding
Description
65 page
Keywords
Establishment,Nursery,Raised,Seedlings,Acacia,nailotic,Flooded,Areas,Sudan