Abstract
The Influence of varying Amounts of Nitrogen, Copper and Magnesium on the Yield of Oat 1. In pot experiments with oat high amounts of copper (500 mg) copper sulfate/pot, comparable to 50 kg (Cu/ha) together with a high nitrogen supply as calcium nitrate led to a remarkable increase in yield of grain in comparison to a normal copper fertilization (50 mg copper sulfate/pot, comparable to 5 kg Cu/ha). When using high amounts of ammonium sulfate the observed effect of high amounts of copper was only small. 2. According to the results and to the copper content and copper uptake of the plant it was concluded, that nitrogen fertilization given as ammonium sulfate increased the availability of soil copper and/or fertilizer copper presumably by affecting the soil reaction. Nitrogen fertilization given as calcium nitrate therefore needs a higher copper level in the root medium either from soil or fertilizers in order to obtain the maximum yield. 3. It was assumed that the form of nitrogen fertilizers was responsible for the different availability of copper in these experiments, as the amount of available copper in the soil increased with the lowering of soil pH due to ammonium sulfate addition. 4. The high copper supply to the soil remarkably reduced the harmful effect of high amounts of nitrogen given as calcium nitrate but not as ammonium sulfate. 5. The nitrogen fertilization with calcium nitrate, especially in combination with a high copper supply, resulted in the reducing effect of a magnesium deficiency. 6. The harmful effect of high amounts of nitrogen, especially in the ammonium sulfate form, upon yield was reduced by an optimal magnesium supply. 7. The results presented suggest that for evaluating the copper status of the soil and for estimating the demands of copper fertilization, soil reaction and its change by the form of nitrogen fertilizers should more be taken in consideration.
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Claims 10
Claim · model-written summary
High copper with a high calcium nitrate nitrogen supply increased oat grain yield compared with normal copper fertilization.
- Taxon
- oat
Avena sativae1 - Treatment
- high amounts of copper (500 mg) copper sulfate/pote1
- Outcome
- yield of graine1
- Direction
- increasee1
- Qualifier
- together with a high nitrogen supply as calcium nitratee1
- Comparator
- normal copper fertilization (50 mg copper sulfate/pot, comparable to 5 kg Cu/ha)e1
- Setting
- pot experimentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Influence of varying Amounts of Nitrogen, Copper and Magnesium on the Yield of Oat”
e1“In pot experiments with oat high amounts of copper (500 mg) copper sulfate/pot, comparable to 50 kg (Cu/ha) together with a high nitrogen supply as calcium nitrate led to a remarkable increase in yield of grain in comparison to a normal copper fertilization (50 mg copper sulfate/pot, comparable to 5 kg Cu/ha)”
Claim · model-written summary
High amounts of ammonium sulfate made the effect of high copper amounts on oat small.
- Taxon
- oatAvena sativae1
- Treatment
- high amounts of ammonium sulfatee2
- Outcome
- effect of high amounts of coppere2
- Direction
- only smalle2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In pot experiments with oat high amounts of copper (500 mg) copper sulfate/pot, comparable to 50 kg (Cu/ha) together with a high nitrogen supply as calcium nitrate led to a remarkable increase in yield of grain in comparison to a normal copper fertilization (50 mg copper sulfate/pot, comparable to 5 kg Cu/ha)”
e2“When using high amounts of ammonium sulfate the observed effect of high amounts of copper was only small”
Claim · model-written summary
Nitrogen fertilization as ammonium sulfate presumably increased the availability of soil and fertilizer copper by affecting soil reaction.
- Taxon
- oatAvena sativae1
- Treatment
- nitrogen fertilization given as ammonium sulfatee3
- Outcome
- availability of soil copper and/or fertilizer coppere3
- Qualifier
- presumably by affecting the soil reactione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In pot experiments with oat high amounts of copper (500 mg) copper sulfate/pot, comparable to 50 kg (Cu/ha) together with a high nitrogen supply as calcium nitrate led to a remarkable increase in yield of grain in comparison to a normal copper fertilization (50 mg copper sulfate/pot, comparable to 5 kg Cu/ha)”
e3“nitrogen fertilization given as ammonium sulfate increased the availability of soil copper and/or fertilizer copper presumably by affecting the soil reaction”
Claim · model-written summary
Nitrogen fertilization as calcium nitrate needs a higher copper level in the root medium to obtain maximum yield.
- Taxon
- oatAvena sativae1
- Treatment
- calcium nitratee4
- Outcome
- a higher copper level in the root mediume4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In pot experiments with oat high amounts of copper (500 mg) copper sulfate/pot, comparable to 50 kg (Cu/ha) together with a high nitrogen supply as calcium nitrate led to a remarkable increase in yield of grain in comparison to a normal copper fertilization (50 mg copper sulfate/pot, comparable to 5 kg Cu/ha)”
e4“Nitrogen fertilization given as calcium nitrate therefore needs a higher copper level in the root medium either from soil or fertilizers in order to obtain the maximum yield”
Claim · model-written summary
The amount of available copper in soil increased as soil pH was lowered by ammonium sulfate addition.
- Taxon
- oatAvena sativae1
- Treatment
- ammonium sulfate additione5
- Outcome
- amount of available copper in the soile5
- Direction
- increasede5
- Qualifier
- with the lowering of soil pHe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In pot experiments with oat high amounts of copper (500 mg) copper sulfate/pot, comparable to 50 kg (Cu/ha) together with a high nitrogen supply as calcium nitrate led to a remarkable increase in yield of grain in comparison to a normal copper fertilization (50 mg copper sulfate/pot, comparable to 5 kg Cu/ha)”
e5“as the amount of available copper in the soil increased with the lowering of soil pH due to ammonium sulfate addition”
Claim · model-written summary
High copper supply to the soil reduced the harmful effect of high amounts of calcium nitrate nitrogen.
- Taxon
- oatAvena sativae1
- Treatment
- high copper supply to the soile6
- Outcome
- harmful effect of high amounts of nitrogene6
- Direction
- reducede6
- Qualifier
- given as calcium nitratee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In pot experiments with oat high amounts of copper (500 mg) copper sulfate/pot, comparable to 50 kg (Cu/ha) together with a high nitrogen supply as calcium nitrate led to a remarkable increase in yield of grain in comparison to a normal copper fertilization (50 mg copper sulfate/pot, comparable to 5 kg Cu/ha)”
e6“The high copper supply to the soil remarkably reduced the harmful effect of high amounts of nitrogen given as calcium nitrate but not as ammonium sulfate”
Claim · model-written summary
High copper supply to the soil did not reduce the harmful effect of high amounts of nitrogen given as ammonium sulfate.
- Taxon
- oatAvena sativae1
- Treatment
- high copper supply to the soile6
- Outcome
- harmful effect of high amounts of nitrogene6
- Direction
- no_changeinferrede6
- Qualifier
- but not as ammonium sulfatee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In pot experiments with oat high amounts of copper (500 mg) copper sulfate/pot, comparable to 50 kg (Cu/ha) together with a high nitrogen supply as calcium nitrate led to a remarkable increase in yield of grain in comparison to a normal copper fertilization (50 mg copper sulfate/pot, comparable to 5 kg Cu/ha)”
e6“The high copper supply to the soil remarkably reduced the harmful effect of high amounts of nitrogen given as calcium nitrate but not as ammonium sulfate”
Claim · model-written summary
Calcium nitrate nitrogen, especially with high copper supply, resulted in a reducing effect of magnesium deficiency on oat.
- Taxon
- oatAvena sativae1
- Treatment
- nitrogen fertilization with calcium nitratee7
- Outcome
- effect of a magnesium deficiencye7
- Direction
- reducinge7
- Qualifier
- especially in combination with a high copper supplye7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In pot experiments with oat high amounts of copper (500 mg) copper sulfate/pot, comparable to 50 kg (Cu/ha) together with a high nitrogen supply as calcium nitrate led to a remarkable increase in yield of grain in comparison to a normal copper fertilization (50 mg copper sulfate/pot, comparable to 5 kg Cu/ha)”
e7“The nitrogen fertilization with calcium nitrate, especially in combination with a high copper supply, resulted in the reducing effect of a magnesium deficiency”
Claim · model-written summary
An optimal magnesium supply reduced the harmful effect of high amounts of nitrogen on oat yield.
- Taxon
- oatAvena sativae1
- Treatment
- optimal magnesium supplye2
- Outcome
- harmful effect of high amounts of nitrogene2
- Direction
- reducede2
- Qualifier
- especially in the ammonium sulfate forme2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In pot experiments with oat high amounts of copper (500 mg) copper sulfate/pot, comparable to 50 kg (Cu/ha) together with a high nitrogen supply as calcium nitrate led to a remarkable increase in yield of grain in comparison to a normal copper fertilization (50 mg copper sulfate/pot, comparable to 5 kg Cu/ha)”
e2“The harmful effect of high amounts of nitrogen, especially in the ammonium sulfate form, upon yield was reduced by an optimal magnesium supply”
Claim · model-written summary
Soil reaction and its change by the form of nitrogen fertilizer should be considered when evaluating soil copper status and estimating copper fertilization demand.
- Taxon
- oatAvena sativae1
- Outcome
- soil reaction and its change by the form of nitrogen fertilizerse2
- Qualifier
- for evaluating the copper status of the soile2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In pot experiments with oat high amounts of copper (500 mg) copper sulfate/pot, comparable to 50 kg (Cu/ha) together with a high nitrogen supply as calcium nitrate led to a remarkable increase in yield of grain in comparison to a normal copper fertilization (50 mg copper sulfate/pot, comparable to 5 kg Cu/ha)”
e2“for evaluating the copper status of the soil and for estimating the demands of copper fertilization, soil reaction and its change by the form of nitrogen fertilizers should more be taken in consideration”
The same questions in other papers
copper atom · yield · Avena sativa (oats)Results differ
4 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- no effect
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See all 8 papers →calcium nitrate · nutrient: content · Avena sativa (oats)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
fertilization · nutrient: content · Avena sativa (oats)Positive and negative results
8 papers in the same direction as this paper · 31 in the opposite direction
- positive
- positive
- positive
36 papers more in this group
See all 40 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.