Abstract
Abstract Chlorosis of grain sorghum (Sorghum bicolor L. Moench) due to a deficiency or unavailability of soil iron limits yields of grain over an extensive area of Texas. Standard corrective treatments in the past have called for frequent foliar sprays to correct the deficiency. Soil applications generally have not been economically satisfactory‐ The purpose of this study was to develop a practical and economical means of improving Fe nutrition of grain sorghum. Soil applied as well as foliarly applied treatments were evaluated. Ferrous iron from foliarly applied inorganic Fe sources was complexed by plant metabolites and cycled back to the soil as organic residue. In addition to the sorghum plant, weeds were compared for their Fe complexing abilities. Sorghum plant response and Fe uptake were compared with coitmercial Fe chelates and foliar Fe sprays. Growth responses in the greenhouse experiments were in the following order: Plant complexed Fe > FeEDDHA. > foliar sprays. The degree of plant response to Fe was associated with the severity of Fe chlorosis. Amaranthus, spp, a commonly occurring weed in Fe chlorotic areas showed higher Fe complexing ability than sorghum. Subsequent applications of the various Fe‐treated plant residues to soils of medium to severe Fe chlorosis problems indicated Amaranthus, spp, was a better Fe carrier than the other sources. Data indicate plant uptake of Fe by the sorghum crop from plant complexed sources equaled or exceeded that from FeEDDHA. Field tests evaluating the new organic sources have been initiated.
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Claims 5
Claim · model-written summary
Plant-complexed iron gave greater greenhouse growth response than FeEDDHA and foliar sprays.
- Taxon
- grain sorghum
Sorghum bicolort0 - Treatment
- Plant complexed Fee0
- Outcome
- Growth responsese0
- Comparator
- FeEDDHAe0
- Setting
- greenhousee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth responses in the greenhouse experiments were in the following order: Plant complexed Fe > FeEDDHA. > foliar sprays”
t0“grain sorghum”
Claim · model-written summary
Plant response to iron was associated with chlorosis severity.
- Taxon
- grain sorghumSorghum bicolort0
- Compound
- Fee0
- Outcome
- plant response to Fee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The degree of plant response to Fe was associated with the severity of Fe chlorosis”
t0“grain sorghum”
Claim · model-written summary
Amaranthus had higher iron-complexing ability than sorghum.
- Taxon
- grain sorghumSorghum bicolort0
- Interactor
- Amaranthus, sppe0weed
- Outcome
- Fe complexing abilitye0
- Direction
- highere0
- Comparator
- sorghume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Amaranthus, spp, a commonly occurring weed in Fe chlorotic areas showed higher Fe complexing ability than sorghum”
t0“grain sorghum”
Claim · model-written summary
Amaranthus residue was a better iron carrier than other sources in chlorotic soils.
- Taxon
- grain sorghumSorghum bicolort0
- Treatment
- Amaranthus, sppe0
- Interactor
- Amaranthus, sppe0weed
- Outcome
- Fe carriere0
- Direction
- bettere0
- Comparator
- other sourcese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Subsequent applications of the various Fe‐treated plant residues to soils of medium to severe Fe chlorosis problems indicated Amaranthus, spp, was a better Fe carrier than the other sources”
t0“grain sorghum”
Claim · model-written summary
Sorghum iron uptake from plant-complexed sources equaled or exceeded uptake from FeEDDHA.
- Treatment
- plant complexed sourcese0
- Outcome
- plant uptake of Fee0
- Direction
- equaled or exceedede0
- Comparator
- FeEDDHAe0
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant uptake of Fe by the sorghum crop from plant complexed sources equaled or exceeded that from FeEDDHA”
The same questions in other papers
iron atom · growth · Sorghum bicolor (sorghum)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.