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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Response of Onion to Different Organic Amendments in Central Uganda
Author(s)
Bosco Bua, Raphael Owiny and Akasairi Ocwa
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DOI:10.17265/2161-6264/2017.02.002
Affiliation(s)
Department of Agriculture, Kyambogo University, P.O. Box 1, Kyambogo-Kampala, Uganda
ABSTRACT
Onion is one of the most important vegetable crops grown in Uganda, because of its
nutritional and economic value. However, production of onion in Uganda is very
low due to nutritional imbalances in the soil. Therefore, soil
fertility remains one of the key areas of focus in sustaining onion production.
A field experiment was conducted to assess the
response of onion variety Red Creole C-5 to different soil organic amendments at Kyambogo University during the period February
2016 and January 2017. The experiment was
laid out in a randomized complete
block design with four replications. The treatments
included T0: without
manure (control), T1: green manure (GM), T2: farmyard manure (FYM) and T3: compost manure (CM). Data collected
included: plant height, root length, plant
fresh and dry weight, number of leaves per plant, fresh and dry weight of
bulbs, diameter of bulbs and commercial yield computed. Data were analysed using Genstat.
There was significant response of onion to the different soil organic amendments. Onion plant height,
number of leaves, root length, dry and fresh weight and bulb weight were high in farmyard
manure, followed by compost
manure and lastly green manure, compared to the
control. The highest yield (12,000 kg/ha) was obtained
from the plots amended with farmyard manure as
opposed to the control. It was therefore concluded that farmyard manures had a
greater effect on the agronomic and yield performance of onion. Future study with more than
one onion genotype is recommended so as to widen the scope of this result.
KEYWORDS
Onion, organic manures, growth, yield.
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