Abstract
Abstract Results of field and growth chamber investigations indicate that potassium polyphosphate (KPP) is as effective as ammonium orthophosphate (AOP), ammonium polyphosphate (APP), and triple superphosphate (TSP) as a P source for corn ( Zea mays L.) and grain sorghum ( Sorghum bicolor L.). At one field site, on a soil high in total Fe, low P availability early in the growing season from both KPP and APP limited crop response. Field investigations of banded applications of KPP and AOP in direct contact with wheat ( Triticum aestivum L.) and grain sorphum seed had little effect on seedling emergence. In a growth chamber, however, a high P rate as banded AOP retarded dry‐matter yield of grain sorghum. Application of large amounts of P as KPP, AOP, APP and TSP to corn in the presence of low available Zn significantly reduced Zn concentrations in the plants but there was no significant difference in the effects of the various P carriers.
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Claims 8
Claim · model-written summary
Potassium polyphosphate was as effective as AOP, APP and TSP as a P source for corn.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- potassium polyphosphate (KPP)e0
- Outcome
- effective ase0
- Direction
- as effective ase0
- Comparator
- ammonium orthophosphate (AOP), ammonium polyphosphate (APP), and triple superphosphate (TSP)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium polyphosphate (KPP) is as effective as ammonium orthophosphate (AOP), ammonium polyphosphate (APP), and triple superphosphate (TSP) as a P source for corn ( Zea mays L.) and grain sorghum ( Sorghum bicolor L.)”
Claim · model-written summary
Potassium polyphosphate was as effective as AOP, APP and TSP as a P source for grain sorghum.
- Taxon
- grain sorghum
Sorghum bicolore0 - Treatment
- potassium polyphosphate (KPP)e0
- Outcome
- effective ase0
- Direction
- as effective ase0
- Comparator
- ammonium orthophosphate (AOP), ammonium polyphosphate (APP), and triple superphosphate (TSP)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium polyphosphate (KPP) is as effective as ammonium orthophosphate (AOP), ammonium polyphosphate (APP), and triple superphosphate (TSP) as a P source for corn ( Zea mays L.) and grain sorghum ( Sorghum bicolor L.)”
Claim · model-written summary
At a field site on a soil high in total Fe, low early-season P availability from KPP and APP limited crop response.
- Taxon
- crope0
- Treatment
- KPP and APPe0
- Outcome
- crop responsee0
- Direction
- limitede0
- Setting
- one field site, on a soil high in total Fee0
Not reportedComparator
Verbatim
e0“At one field site, on a soil high in total Fe, low P availability early in the growing season from both KPP and APP limited crop response”
Claim · model-written summary
Banded KPP and AOP in direct contact with wheat seed had little effect on seedling emergence in field trials.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- banded applications of KPP and AOPe0
- Outcome
- seedling emergencee0
- Direction
- little effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field investigations of banded applications of KPP and AOP in direct contact with wheat ( Triticum aestivum L.) and grain sorphum seed had little effect on seedling emergence”
Claim · model-written summary
Banded KPP and AOP in direct contact with grain sorghum seed had little effect on seedling emergence in field trials.
- Taxon
- grain sorphume0
- Treatment
- banded applications of KPP and AOPe0
- Outcome
- seedling emergencee0
- Direction
- little effecte0
Not reportedComparator
Verbatim
e0“Field investigations of banded applications of KPP and AOP in direct contact with wheat ( Triticum aestivum L.) and grain sorphum seed had little effect on seedling emergence”
Claim · model-written summary
In a growth chamber, a high P rate as banded AOP retarded dry-matter yield of grain sorghum.
- Taxon
- grain sorghumSorghum bicolore0
- Treatment
- a high P rate as banded AOPe0
- Outcome
- dry‐matter yielde0
- Direction
- retardede0
Not reportedComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a high P rate as banded AOP retarded dry‐matter yield of grain sorghum”
Claim · model-written summary
Large amounts of P as KPP, AOP, APP and TSP applied to corn with low available Zn significantly reduced Zn concentrations in the plants.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- large amounts of P as KPP, AOP, APP and TSPe0
- Outcome
- Zn concentrationse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of large amounts of P as KPP, AOP, APP and TSP to corn in the presence of low available Zn significantly reduced Zn concentrations in the plants”
Claim · model-written summary
The various P carriers did not differ significantly in their effects on Zn concentrations in corn.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- various P carrierse1
- Outcome
- effects of the various P carrierse1
- Direction
- no significant differencee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of large amounts of P as KPP, AOP, APP and TSP to corn in the presence of low available Zn significantly reduced Zn concentrations in the plants”
e1“there was no significant difference in the effects of the various P carriers”
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See all 551 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.