Abstract
Abstract Sorghum [Sorghum bicolor (L.) Moench] cultivars were planted in 8 cm × 8 cm × 8 cm pots filled with ‘white quartz flintshot’ sand containing 0, 0.25, 0.50, 1.0, or 2.0 mg/kg metolachlor [2‐chloro‐N‐(2‐ethyl‐6‐methylphenyl)‐N‐(2 methoxy‐1‐methylethyl)acetamide] and the pots were watered on alternate days with 100 mL 0.1 M sodium acetate at pH 6.0, 5.5, 5.0, 4.5, or 4.0 to determine the influence of excess H+ and metolachlor concentrations on sorghum root growth. Cultivars utilized were Funk G522DR, SC574, SC283, GP‐10, 58M, and 38M. At pH 4.5 and 4.0 (0 metolachlor), root lengths of Funk G522DR and SC574 were significantly decreased compared to roots from plants grown at pH 6.0. The other four cultivars had decreased root growth at pH 4.0 (0 metolachlor). Metolachlor influence on sorghum cultivar root growth was dependent on pH, cultivar, and metolachlor concentration. None of the cultivars showed increased metolachlor activity which was influenced by pH. Metolachlor (0.25 mg/kg) reversed the influence of excess H+ concentration (pH 4.0) in SC574. Metolachlor (0.5, 1.0, and 2.0 ppmw) reversed the excess H+ concentration inhibition of root growth at pH 4.0 in Funk G522DR.
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Claims 7
Claim · model-written summary
At pH 4.5 and 4.0 without metolachlor, Funk G522DR roots were shorter than at pH 6.0.
- Material
- Funk G522DRe0
- Treatment
- pH 4.5 and 4.0e0
- Outcome
- root lengthse0
- Direction
- decreasede0
- Comparator
- pH 6.0e0
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At pH 4.5 and 4.0 (0 metolachlor), root lengths of Funk G522DR and SC574 were significantly decreased compared to roots from plants grown at pH 6.0.”
t0“sorghum (sorghum bicolor)cultivar roots”
Claim · model-written summary
At pH 4.5 and 4.0 without metolachlor, SC574 roots were shorter than at pH 6.0.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At pH 4.5 and 4.0 (0 metolachlor), root lengths of Funk G522DR and SC574 were significantly decreased compared to roots from plants grown at pH 6.0.”
t0“sorghum (sorghum bicolor)cultivar roots”
Claim · model-written summary
The other four cultivars had reduced root growth at pH 4.0 without metolachlor.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The other four cultivars had decreased root growth at pH 4.0 (0 metolachlor).”
t0“sorghum (sorghum bicolor)cultivar roots”
Claim · model-written summary
Metolachlor effects on sorghum cultivar root growth depended on pH, cultivar and concentration.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Metolachlor influence on sorghum cultivar root growth was dependent on pH, cultivar, and metolachlor concentration.”
Claim · model-written summary
No cultivar showed pH related increase in metolachlor activity.
Verbatim
e0“None of the cultivars showed increased metolachlor activity which was influenced by pH.”
Claim · model-written summary
At pH 4.0, 0.25 mg/kg metolachlor reversed the effect of excess H+ in SC574.
- Material
- SC574e0
- Treatment
- Metolachlor (0.25 mg/kg)e0
- Outcome
- influence of excess H+ concentratione0
- Direction
- reversede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Metolachlor (0.25 mg/kg) reversed the influence of excess H+ concentration (pH 4.0) in SC574.”
t0“sorghum (sorghum bicolor)cultivar roots”
Claim · model-written summary
At pH 4.0, metolachlor at 0.5, 1.0 and 2.0 ppmw reversed root growth inhibition in Funk G522DR.
- Material
- Funk G522DRe0
- Treatment
- Metolachlor (0.5, 1.0, and 2.0 ppmw)e0
- Outcome
- inhibition of root growthe0
- Direction
- reversede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Metolachlor (0.5, 1.0, and 2.0 ppmw) reversed the excess H+ concentration inhibition of root growth at pH 4.0 in Funk G522DR.”
t0“sorghum (sorghum bicolor)cultivar roots”
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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.