Abstract
Abstract Spinach was grown in the greenhouse in soil with the pH adjusted to 5.0, 5.5, 6.0, 6.5, and 7.0, N fertilizer rates of 0, 50 and 200 mg N/Kg soil, and Mo fertilizer rates of 0, 0.3 and 1.2 mg Mo/Kg soil. The NO3‐N concentration of the tissue increased with fertilizer N or a rise in pH from 5.0 to 7.0. The addition of Mo at either rate reduced the NO3 concentration of spinach grown at pH 5.0 and 5.5 but had no effect on plants grown at pH 6.5 or 7.0. At pH 6.0 the 1.2 mg Mo/Kg soil rate was effective at the 50 and 200 mg N/Kg soil fertilizer rates but had no effect on spinach grown without a N application. At the same pH, the 0.3 mg Mo/Kg soil rate had no effect on NO3 content of spinach grown with the 50 mg N/Kg rate but did reduce the NO3 content of spinach grown without N added or with the 200 mg N/Kg soil. The 1.2 mg Mo/Kg soil rate was more effective than 0.3 mg Mo/Kg rate in reducing NO3 content of spinach grown with 200 mg N/Kg soil at pH 5.0–6.5 inclusive but gave variable results when no N or 50 mg N/Kg soil was added. Molybdenum did not affect the total N or NO2 concentrations of the plants.
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Claims 13
Claim · model-written summary
Spinach tissue nitrate nitrogen concentration increased with fertilizer nitrogen.
- Taxon
- Spinach
Spinacia oleraceae1 - Treatment
- fertilizer Ne0
- Outcome
- NO3‐N concentration of the tissuee0
- Direction
- increasede0
- Setting
- greenhousee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The NO3‐N concentration of the tissue increased with fertilizer N”
e1“Spinach was grown in the greenhouse”
Claim · model-written summary
Spinach tissue nitrate nitrogen concentration increased as pH rose from 5.0 to 7.0.
- Taxon
- SpinachSpinacia oleraceae1
- Treatment
- a rise in pH from 5.0 to 7.0e0
- Outcome
- NO3‐N concentration of the tissuee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The NO3‐N concentration of the tissue increased with fertilizer N or a rise in pH from 5.0 to 7.0”
e1“Spinach was grown in the greenhouse”
Claim · model-written summary
Both molybdenum rates reduced spinach nitrate concentration at pH 5.0 and 5.5.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- Mo at either ratee0
- Outcome
- NO3 concentratione0
- Direction
- reducede0
- Qualifier
- pH 5.0 and 5.5e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of Mo at either rate reduced the NO3 concentration of spinach grown at pH 5.0 and 5.5”
Claim · model-written summary
Molybdenum did not affect spinach nitrate concentration at pH 6.5 or 7.0.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- Mo at either ratee0
- Outcome
- NO3 concentratione0
- Direction
- no effecte0
- Qualifier
- pH 6.5 or 7.0e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of Mo at either rate reduced the NO3 concentration of spinach grown at pH 5.0 and 5.5 but had no effect on plants grown at pH 6.5 or 7.0”
Claim · model-written summary
At pH 6.0, 1.2 mg Mo/Kg soil was effective for spinach at nitrogen rates of 50 and 200 mg N/Kg soil.
- Taxon
- spinachSpinacia oleraceae1
- Treatment
- 1.2 mg Mo/Kg soile0
- Outcome
- NO3 contente1
- Direction
- effectivee0
- Qualifier
- 50 and 200 mg N/Kg soil fertilizer ratese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At pH 6.0 the 1.2 mg Mo/Kg soil rate was effective at the 50 and 200 mg N/Kg soil fertilizer rates”
e1“but did reduce the NO3 content of spinach grown without N added or with the 200 mg N/Kg soil”
Claim · model-written summary
At pH 6.0, 1.2 mg Mo/Kg soil had no effect on spinach without applied nitrogen.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- 1.2 mg Mo/Kg soile0
- Outcome
- NO3 contente1
- Direction
- no effecte0
- Qualifier
- without a N applicatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At pH 6.0 the 1.2 mg Mo/Kg soil rate was effective at the 50 and 200 mg N/Kg soil fertilizer rates but had no effect on spinach grown without a N application”
e1“but did reduce the NO3 content of spinach grown without N added or with the 200 mg N/Kg soil”
Claim · model-written summary
At pH 6.0, 0.3 mg Mo/Kg soil did not affect spinach nitrate at 50 mg N/Kg.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- 0.3 mg Mo/Kg soile0
- Outcome
- NO3 contente0
- Direction
- no effecte0
- Qualifier
- 50 mg N/Kg ratee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 0.3 mg Mo/Kg soil rate had no effect on NO3 content of spinach grown with the 50 mg N/Kg rate”
Claim · model-written summary
At pH 6.0, 0.3 mg Mo/Kg soil reduced spinach nitrate without added nitrogen.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- 0.3 mg Mo/Kg soile0
- Outcome
- NO3 contente0
- Direction
- reducee0
- Qualifier
- without N addede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 0.3 mg Mo/Kg soil rate had no effect on NO3 content of spinach grown with the 50 mg N/Kg rate but did reduce the NO3 content of spinach grown without N added or with the 200 mg N/Kg soil”
Claim · model-written summary
At pH 6.0, 0.3 mg Mo/Kg soil reduced spinach nitrate with 200 mg N/Kg soil.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- 0.3 mg Mo/Kg soile0
- Outcome
- NO3 contente0
- Direction
- reducee0
- Qualifier
- 200 mg N/Kg soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 0.3 mg Mo/Kg soil rate had no effect on NO3 content of spinach grown with the 50 mg N/Kg rate but did reduce the NO3 content of spinach grown without N added or with the 200 mg N/Kg soil”
Claim · model-written summary
At 200 mg N/Kg soil and pH 5.0–6.5, 1.2 mg Mo/Kg soil reduced spinach nitrate more effectively than 0.3 mg Mo/Kg.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- 1.2 mg Mo/Kg soile0
- Outcome
- NO3 contente0
- Direction
- more effectivee0
- Qualifier
- 200 mg N/Kg soil at pH 5.0–6.5 inclusivee0
- Comparator
- 0.3 mg Mo/Kg ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 1.2 mg Mo/Kg soil rate was more effective than 0.3 mg Mo/Kg rate in reducing NO3 content of spinach grown with 200 mg N/Kg soil at pH 5.0–6.5 inclusive”
Claim · model-written summary
The higher molybdenum rate gave variable nitrate results with no nitrogen or 50 mg N/Kg soil.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- 1.2 mg Mo/Kg soile0
- Outcome
- NO3 contente0
- Qualifier
- variable results when no N or 50 mg N/Kg soil was addede0
- Comparator
- 0.3 mg Mo/Kg ratee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 1.2 mg Mo/Kg soil rate was more effective than 0.3 mg Mo/Kg rate in reducing NO3 content of spinach grown with 200 mg N/Kg soil at pH 5.0–6.5 inclusive but gave variable results when no N or 50 mg N/Kg soil was added”
Claim · model-written summary
Molybdenum did not affect total nitrogen in spinach.
- Taxon
- spinachSpinacia oleraceae1
- Treatment
- Molybdenume0
- Outcome
- total Ne0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Molybdenum did not affect the total N or NO2 concentrations of the plants”
e1“The addition of Mo at either rate reduced the NO3 concentration of spinach grown”
Claim · model-written summary
Molybdenum did not affect nitrite concentration in spinach.
- Taxon
- spinachSpinacia oleraceae1
- Treatment
- Molybdenume0
- Outcome
- NO2 concentrationse0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Molybdenum did not affect the total N or NO2 concentrations of the plants”
e1“The addition of Mo at either rate reduced the NO3 concentration of spinach grown”
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See all 25 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.