Abstract
Abstract Nine cuttings of ‘Alaskland’ red clover (Trifolium pratense L.) grown in the greenhouse in a 24 factorial experiment were made over a 2‐year period. Annual applications of two P and two K rates and sources in the presence and absence of additional C1 were made. The higher P rate did not increase clover yield, but did increase P percentage of and P uptake by the last five clippings only when K2SO4 was used. Total C1 uptake was reduced by the higher P application. The higher K rate increased clover yield and P uptake. K source had no significant effect on clover yield. Uptake of C1 and C1 percentage were greater with KC1 than with K2SO4 while total P uptake tended to be greater with K2SO4. Annual applications of 408 kg C1/ha depressed clover yield, P uptake and dry matter percentage, and increased C1 percentage and uptake. Available NO3‐N, P, and K in the soil were reduced by the nine clippings.
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Claims 11
Claim · model-written summary
Higher phosphorus rate did not increase clover yield.
- Taxon
- red clover
Trifolium pratensee1 - Treatment
- higher P ratee0
- Outcome
- clover yielde0
- Direction
- did not increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher P rate did not increase clover yield”
e1“red clover (Trifolium pratense L.)”
Claim · model-written summary
Higher phosphorus increased P percentage in the last five clippings only with K2SO4.
- Taxon
- red cloverTrifolium pratensee2
- Organ / stage
- last five clippingse0
- Treatment
- higher P ratee1
- Outcome
- P percentagee0
- Direction
- increasee0
- Qualifier
- only when K2SO4 was usede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“did increase P percentage of and P uptake by the last five clippings only when K2SO4 was used”
e1“The higher P rate”
e2“red clover (Trifolium pratense L.)”
Claim · model-written summary
Higher phosphorus increased P uptake in the last five clippings only with K2SO4.
- Taxon
- red cloverTrifolium pratensee2
- Treatment
- higher P ratee1
- Outcome
- P uptakee0
- Direction
- increasee0
- Qualifier
- only when K2SO4 was usede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“did increase P percentage of and P uptake by the last five clippings only when K2SO4 was used”
e1“The higher P rate”
e2“red clover (Trifolium pratense L.)”
Claim · model-written summary
Higher phosphorus reduced total C1 uptake.
- Taxon
- red cloverTrifolium pratensee1
- Treatment
- higher P applicatione0
- Outcome
- Total C1 uptakee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total C1 uptake was reduced by the higher P application”
e1“red clover (Trifolium pratense L.)”
Claim · model-written summary
Higher potassium rate increased clover yield and P uptake.
- Taxon
- red cloverTrifolium pratensee1
- Treatment
- higher K ratee0
- Outcome
- clover yield and P uptakee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher K rate increased clover yield and P uptake”
e1“red clover (Trifolium pratense L.)”
Claim · model-written summary
Potassium source had no significant effect on clover yield.
- Taxon
- red cloverTrifolium pratensee1
- Treatment
- K sourcee0
- Outcome
- clover yielde0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“K source had no significant effect on clover yield”
e1“red clover (Trifolium pratense L.)”
Claim · model-written summary
KC1 increased C1 uptake and C1 percentage relative to K2SO4.
- Taxon
- red cloverTrifolium pratensee1
- Treatment
- KC1e0
- Outcome
- Uptake of C1 and C1 percentagee0
- Direction
- greatere0
- Comparator
- K2SO4e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Uptake of C1 and C1 percentage were greater with KC1 than with K2SO4”
e1“red clover (Trifolium pratense L.)”
Claim · model-written summary
Total phosphorus uptake tended to be greater with K2SO4 than KC1.
- Taxon
- red cloverTrifolium pratensee2
- Treatment
- K2SO4e0
- Outcome
- total P uptakee0
- Direction
- greatere0
- Qualifier
- tended to bee0
- Comparator
- KC1e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while total P uptake tended to be greater with K2SO4”
e1“with KC1 than with K2SO4”
e2“red clover (Trifolium pratense L.)”
Claim · model-written summary
Annual chloride application depressed clover yield, P uptake and dry matter percentage.
- Taxon
- red cloverTrifolium pratensee1
- Treatment
- Annual applications of 408 kg C1/hae0
- Outcome
- clover yield, P uptake and dry matter percentagee0
- Direction
- depressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Annual applications of 408 kg C1/ha depressed clover yield, P uptake and dry matter percentage”
e1“red clover (Trifolium pratense L.)”
Claim · model-written summary
Annual chloride application increased C1 percentage and uptake.
- Taxon
- red cloverTrifolium pratensee1
- Treatment
- Annual applications of 408 kg C1/hae0
- Outcome
- C1 percentage and uptakee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Annual applications of 408 kg C1/ha depressed clover yield, P uptake and dry matter percentage, and increased C1 percentage and uptake”
e1“red clover (Trifolium pratense L.)”
Claim · model-written summary
Nine clippings reduced available soil NO3‐N, P and K.
- Taxon
- red cloverTrifolium pratensee1
- Treatment
- nine clippingse0
- Outcome
- Available NO3‐N, P, and K in the soile0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Available NO3‐N, P, and K in the soil were reduced by the nine clippings”
e1“red clover (Trifolium pratense L.)”
The same questions in other papers
phosphorus · nutrient: content · Trifolium pratense (red clover)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
phosphorus · yield · Trifolium pratense (red clover)Positive and negative results
6 in the opposite direction
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →potassium · yield · Trifolium pratense (red clover)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
4 papers more in this group
See all 8 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.