Journal of Stress Physiology &
Biochemistry, Vol. 9 No. 4
2013, pp. 207-218 ISSN 1997-0838
Original Text Copyright (cc) 2013 by Dada, Aminu
ORIGINAL ARTICLE
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QueryDate : 2016-12-24
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The performance of lowland
rice (Oryza sativa L.)
cultivars on iron toxic soil augmented with compost
O.A. Dada and J.A. Aminu
Department of Botany, University of
Ibadan, Ibadan, Nigeria
*E-Mail: oadada247@yahoo.com
Received July 10, 2013
Performance of lowland rice grown
on anaerobic wetland soil is greatly affected by iron toxicity disorder
in Nigeria. Better nutrient management and cultivation of resistant
varieties have been recommended as strategy to manage this nutrient
disorder. Information on intraspecific lowland NERICA cultivars grown
on iron toxic soil augmented with compost is scanty. Therefore, the
effect of different rates of compost on growth, dry matter and grain
yield of lowland NERICA cultivars grown on iron toxic soil was
investigated. A greenhouse experiment comprising of three (two NERICAs
and ITA 212) lowland rice cultivars
and four varying rates of compost
arranged in completely randomized design
with six replicates was conducted
in greenhouse of Botany Department, University
of Ibadan. Data collected on growth and yield parameters were analysed
using ANOVA and LSD at P≤ 0.05. Correlation and simple linear
regression were used to establish relationship between growth and iron
toxicity scores. Results showed that iron toxicity significantly
(p≤0.05) reduced growth and yield of
lowland rice. Growth and grain
yield of NERICA cultivars were
significantly better (P ≤0.05) on
soil augmented with compost than
control. Grain yield was significantly related to the
number of leaves affected by iron toxicity. Cultivating lowland
NERICA-L-1 on iron toxic soil augmented with 8t ha -1 of
compost will enhance better growth, dry matter characteristics and
increase lowland NERICA grain yield.
Key
words: Iron toxicity, lowland NERICA, compost, wetland,
grain yield
