Abstract
The hybrid NK283 was subjected to a range of nutrient element concentrations to determine their effect on predisposition of sorghum to seedling diseases and root rot. Emergence was not affected by soil nutrient status. Similarly N, P and K did not affect seedling disease severity or secondary root rot. Highly significant correlations with disease were recorded between soil acidity, expressed as pH, exchangable acid (Al+H), acid saturation and total cations. A linear increase in mesocotyl discolouration was recorded with decreasing pH, while secondary root discolouration increased significantly at pH(KCI)<4.6. A threshold value of approximately 15% acid saturation was recorded above which seedling diseases and secondary root rot increased significantly. Seedling length and post-emergence damp- ing-off were significantly related to the degree of mesocotyl discolouration. Plant length at 6, 9 and 12 weeks after planting was significantly related to effective root volume (ERV) which was calculated as ERV=(((100-root rot (%))/100)*root volume(ml)). It was concluded that soil acidity
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Claims 11
Claim · model-written summary
Sorghum emergence was not affected by soil nutrient status.
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Emergence was not affected by soil nutrient status.”
t0“sorghum”
Claim · model-written summary
N, P and K did not affect sorghum seedling disease severity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similarly N, P and K did not affect seedling disease severity or secondary root rot.”
t0“sorghum”
Claim · model-written summary
N, P and K did not affect secondary root rot in sorghum.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similarly N, P and K did not affect seedling disease severity or secondary root rot.”
t0“sorghum”
Claim · model-written summary
Soil acidity measures were significantly correlated with sorghum disease.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highly significant correlations with disease were recorded between soil acidity, expressed as pH, exchangable acid (Al+H), acid saturation and total cations.”
t0“sorghum”
Claim · model-written summary
Mesocotyl discolouration increased linearly as pH decreased.
Not reportedSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A linear increase in mesocotyl discolouration was recorded with decreasing pH”
t0“sorghum”
Claim · model-written summary
Secondary root discolouration increased significantly below pH(KCI) 4.6.
- Organ / stage
- secondary roote0
- Outcome
- secondary root discolouratione0
- Direction
- increasede0
- Value
- pH(KCI)<4.6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“secondary root discolouration increased significantly at pH(KCI)<4.6.”
t0“sorghum”
Claim · model-written summary
Seedling diseases increased significantly above about 15% acid saturation.
Not reportedSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A threshold value of approximately 15% acid saturation was recorded above which seedling diseases and secondary root rot increased significantly.”
t0“sorghum”
Claim · model-written summary
Secondary root rot increased significantly above about 15% acid saturation.
Not reportedSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A threshold value of approximately 15% acid saturation was recorded above which seedling diseases and secondary root rot increased significantly.”
t0“sorghum”
Claim · model-written summary
Seedling length was significantly related to mesocotyl discolouration.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedling length and post-emergence damp- ing-off were significantly related to the degree of mesocotyl discolouration.”
t0“sorghum”
Claim · model-written summary
Post-emergence damping off was significantly related to mesocotyl discolouration.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedling length and post-emergence damp- ing-off were significantly related to the degree of mesocotyl discolouration.”
t0“sorghum”
Claim · model-written summary
Plant length at 6, 9 and 12 weeks was significantly related to effective root volume.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant length at 6, 9 and 12 weeks after planting was significantly related to effective root volume (ERV)”
t0“sorghum”
The same questions in other papers
potassium · disease · SorghumPositive and negative results
1 in the opposite direction
- positive
nitrogen · disease · SorghumPositive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
phosphorus · disease · SorghumPositive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- negative
1 paper more in this group
See all 5 papers →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.