Abstract
Rice is one of the staple crops in Burkina Faso. However, the local production covers only 47% of the population demands. One of the main reasons of the poor productivity in Burkina Faso is iron toxicity which is related mainly to the activity of Iron Reducing Bacteria in the rice field’s ecosystems. In order to control the harmful effects of Iron Reducing Bacterial populations and to improve rice productivity, a pots experiment was conducted at the experimental site of the University Ouaga I Pr. Joseph KI-ZERBO. An iron toxic soil from Kou Valley (West of Burkina Faso) and two rice varieties, BOUAKE-189 and ROK-5, sensitive and tolerant to iron toxicity, respectively, were used for the experiment. The pots were drained for 14 days (D2) and amended with chemical fertilizers (NPK + Urea and NPK + Urea + Ca + Mg + Zn complexes). Control pots without drainage and fertilization (D0/NF) were prepared similarly. The kinetics of Iron Reducing Bacterial populations and ferrous iron content in soil near rice roots were monitored throughout the cultural cycle using MPN and colorimetric methods, respectively. The total iron content was evaluated in rice plant using a spectrometric method. Data obtained were analyzed in relation to drainage and fertilization mode, rice growth stage and rice yield using the Student’s t-test and XLSTAT 2014 statistical software. The experiment showed that the combined application of subsurface drainage and NPK + Urea + Ca + Mg + Zn fertilization, reduced significantly the number of IRB in the soil near rice roots for both rice varieties (p = 0.050 and p = 0.020) increased the leaf tissue tolerance to excess amounts of Fe, and rice yield.
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Claims 3
Claim · model-written summary
Combined subsurface drainage and NPK + Urea + Ca + Mg + Zn fertilization significantly reduced the number of iron-reducing bacteria in soil near the roots of both rice varieties.
- Taxon
- rice
Oryza sativae1 - Treatment
- combined application of subsurface drainage and NPK + Urea + Ca + Mg + Zn fertilizatione6
- Interactor
- Iron Reducing Bacteriae7other
- Outcome
- number of IRB in the soil near rice rootse1
- Direction
- reducede1
- Qualifier
- p = 0.050 and p = 0.020e1
- Comparator
- Control pots without drainage and fertilizatione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“reduced significantly the number of IRB in the soil near rice roots for both rice varieties (p = 0.050 and p = 0.020)”
e6“the combined application of subsurface drainage and NPK + Urea + Ca + Mg + Zn fertilization”
e5“Control pots without drainage and fertilization (D0/NF) were prepared similarly”
e7“related mainly to the activity of Iron Reducing Bacteria”
Claim · model-written summary
Combined drainage and fertilization increased leaf tissue tolerance of rice to excess Fe.
- Taxon
- RiceOryza sativae4
- Treatment
- combined application of subsurface drainage and NPK + Urea + Ca + Mg + Zn fertilizatione6
- Outcome
- leaf tissue tolerance to excess amounts of Fee2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Rice is one of the staple crops in Burkina Faso”
e6“the combined application of subsurface drainage and NPK + Urea + Ca + Mg + Zn fertilization”
e2“increased the leaf tissue tolerance to excess amounts of Fe”
Claim · model-written summary
Combined drainage and fertilization increased rice yield.
- Taxon
- RiceOryza sativae4
- Treatment
- combined application of subsurface drainage and NPK + Urea + Ca + Mg + Zn fertilizatione6
- Outcome
- rice yielde3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Rice is one of the staple crops in Burkina Faso”
e6“the combined application of subsurface drainage and NPK + Urea + Ca + Mg + Zn fertilization”
e3“increased the leaf tissue tolerance to excess amounts of Fe, and rice yield”
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