Abstract
The impact of simulated acid rain on the survival, growth and yield of NR 930025 cultivar of cassava Manihot esculenta (Crantz) is studied. A field experiment was conducted from October 2012 to March 2013 at the Federal University of Technology, Akure, Ondo state, Nigeria. Simulated acid rain was prepared with a mixed concentrated sulphuric acid (H2SO4) and concentrated nitric acid (HNO3) in a ratio 2:1 to get the desired pH using a Deluxe pH meter. Plants was exposed to simulated acid rain of pH 2.0, 3.0, 4.0, 5.0, 6.0 and 7.0 which was the control, respectively. Simulated acid rain induced morphological changes including chlorosis, early leaf senescence, necrosis, leaf abscission, leaf folding and death. Plant height, leaf area, fresh weight, dry weight, relative growth rate , the chlorophyll content of the leaf and the harvest index was highest at 7.0 (control) and significantly (p<0.05) decreased with increasing acidity.
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Claims 4
Claim · model-written summary
Simulated acid rain induced morphological changes including chlorosis, leaf senescence, necrosis, leaf abscission, leaf folding and death in cassava.
- Taxon
- Manihot esculenta
Manihot esculentae0 - Treatment
- simulated acid raine1
- Outcome
- morphological changese2
- Direction
- inducede2
- Qualifier
- chlorosis, early leaf senescence, necrosis, leaf abscission, leaf folding and deathe2
- Comparator
- the controle1
- Setting
- field experimente3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The impact of simulated acid rain on the survival, growth and yield of NR 930025 cultivar of cassava Manihot esculenta (Crantz) is studied”
e1“Plants was exposed to simulated acid rain of pH 2.0, 3.0, 4.0, 5.0, 6.0 and 7.0 which was the control, respectively”
e2“Simulated acid rain induced morphological changes including chlorosis, early leaf senescence, necrosis, leaf abscission, leaf folding and death”
e3“A field experiment was conducted from October 2012 to March 2013 at the Federal University of Technology, Akure, Ondo state, Nigeria”
Claim · model-written summary
Plant height, leaf area and fresh weight decreased significantly with increasing acidity.
- Taxon
- Manihot esculentaManihot esculentae0
- Treatment
- simulated acid raine1
- Outcome
- Plant height, leaf area, fresh weighte3
- Direction
- decreasede3
- Comparator
- 7.0 (control)e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The impact of simulated acid rain on the survival, growth and yield of NR 930025 cultivar of cassava Manihot esculenta (Crantz) is studied”
e1“Plants was exposed to simulated acid rain of pH 2.0, 3.0, 4.0, 5.0, 6.0 and 7.0 which was the control, respectively”
e3“Plant height, leaf area, fresh weight, dry weight, relative growth rate , the chlorophyll content of the leaf and the harvest index was highest at 7.0 (control) and significantly (p<0.05) decreased with increasing acidity”
Claim · model-written summary
Dry weight and relative growth rate decreased significantly with increasing acidity.
- Taxon
- Manihot esculentaManihot esculentae0
- Treatment
- simulated acid raine1
- Outcome
- dry weight, relative growth ratee3
- Direction
- decreasede3
- Comparator
- 7.0 (control)e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The impact of simulated acid rain on the survival, growth and yield of NR 930025 cultivar of cassava Manihot esculenta (Crantz) is studied”
e1“Plants was exposed to simulated acid rain of pH 2.0, 3.0, 4.0, 5.0, 6.0 and 7.0 which was the control, respectively”
e3“Plant height, leaf area, fresh weight, dry weight, relative growth rate , the chlorophyll content of the leaf and the harvest index was highest at 7.0 (control) and significantly (p<0.05) decreased with increasing acidity”
Claim · model-written summary
Leaf chlorophyll content and harvest index decreased significantly with increasing acidity.
- Taxon
- Manihot esculentaManihot esculentae0
- Treatment
- simulated acid raine1
- Outcome
- the chlorophyll content of the leaf and the harvest indexe3
- Direction
- decreasede3
- Comparator
- 7.0 (control)e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The impact of simulated acid rain on the survival, growth and yield of NR 930025 cultivar of cassava Manihot esculenta (Crantz) is studied”
e1“Plants was exposed to simulated acid rain of pH 2.0, 3.0, 4.0, 5.0, 6.0 and 7.0 which was the control, respectively”
e3“Plant height, leaf area, fresh weight, dry weight, relative growth rate , the chlorophyll content of the leaf and the harvest index was highest at 7.0 (control) and significantly (p<0.05) decreased with increasing acidity”
The same questions in other papers
rainfall · growth · Manihot esculenta (cassava)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
rainfall · physiology: pigments · Manihot esculenta (cassava)Results agree
2 papers in the same direction as this paper
- negative
- negative
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.