Abstract
Protein content and yield of wheat usually increased with increases in the amount of nitrate nitrogen present in the soil. Large yield increases were obtained when 34 or 67 kg N/ha was applied broadcast to nonfallow land at time of seeding, but protein content decreased or increased only slightly. Protein content increased substantially when 101–202 kg N/ha was applied to nonfallow land, whereas yields were not increased above that obtained with 67 kg N/ha. Protein content of wheat grown on fallow land increased with increasing amounts of added nitrogen up to about 134 kg N/ha; yields did not increase greatly with added nitrogen. Wheat protein content was found to be related to nitrogen supply. An R 2 value of 0.78 was obtained when wheat protein content was related to soil nitrate nitrogen measured to a depth of 61 cm and nitrogen applied broadcast at time of seeding. Soil- and foliar-applied postemergent nitrogen applications increased the protein content more than equivalent rates of nitrogen-applied broadcast at time of seeding in field studies conducted during 1971, but not in 1970. A greenhouse experiment showed that usually less than 1% of the nitrogen from ammonium nitrate, urea, or ammonium sulfate was absorbed into the grain when applied to the foliar surfaces of wheat; usually greater than 30% of the nitrogen from these fertilizers was absorbed when soil applied.
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Claims 11
Claim · model-written summary
Wheat protein content and yield usually increased with soil nitrate nitrogen.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- nitrate nitrogen present in the soile0
- Outcome
- Protein content and yielde0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Protein content and yield of wheat usually increased with increases in the amount of nitrate nitrogen present in the soil.”
Claim · model-written summary
Broadcast 34 or 67 kg N/ha at seeding produced large yield increases on nonfallow land.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- 34 or 67 kg N/ha was applied broadcaste0
- Outcome
- yielde0
- Direction
- increasese0
- Setting
- nonfallow lande0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Large yield increases were obtained when 34 or 67 kg N/ha was applied broadcast to nonfallow land at time of seeding”
t0“NEEPAWA WHEAT”
Claim · model-written summary
At those rates, wheat protein decreased or increased only slightly.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- 34 or 67 kg N/hae1
- Outcome
- protein contente0
- Direction
- decreased or increased only slightlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but protein content decreased or increased only slightly”
e1“when 34 or 67 kg N/ha was applied broadcast to nonfallow land at time of seeding”
t0“NEEPAWA WHEAT”
Claim · model-written summary
Applying 101–202 kg N/ha on nonfallow land substantially increased wheat protein.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- 101–202 kg N/hae0
- Outcome
- Protein contente0
- Direction
- increased substantiallye0
- Setting
- nonfallow lande0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Protein content increased substantially when 101–202 kg N/ha was applied to nonfallow land”
t0“NEEPAWA WHEAT”
Claim · model-written summary
At 101–202 kg N/ha, yields did not exceed those at 67 kg N/ha.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- 101–202 kg N/hae1
- Outcome
- yieldse0
- Direction
- not increasede0
- Comparator
- 67 kg N/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas yields were not increased above that obtained with 67 kg N/ha”
e1“101–202 kg N/ha was applied to nonfallow land”
t0“NEEPAWA WHEAT”
Claim · model-written summary
On fallow land, added nitrogen increased protein content up to about 134 kg N/ha.
- Taxon
- wheatTriticum aestivume0
- Treatment
- added nitrogene0
- Outcome
- Protein contente0
- Direction
- increasede0
- Value
- 134 kg N/hae0
- Setting
- fallow lande0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Protein content of wheat grown on fallow land increased with increasing amounts of added nitrogen up to about 134 kg N/ha”
Claim · model-written summary
Added nitrogen did not greatly increase yield on fallow land.
- Taxon
- wheatTriticum aestivume1
- Treatment
- added nitrogene0
- Outcome
- yieldse0
- Direction
- did not increase greatlye0
- Setting
- fallow lande1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yields did not increase greatly with added nitrogen”
e1“wheat grown on fallow land”
Claim · model-written summary
Wheat protein content related to nitrogen supply, with R 2 of 0.78 for soil nitrate and broadcast nitrogen.
- Taxon
- WheatTriticum aestivume0
- Treatment
- nitrogen supplye0
- Outcome
- protein contente0
- Value
- 0.78e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat protein content was found to be related to nitrogen supply. An R 2 value of 0.78 was obtained when wheat protein content was related to soil nitrate nitrogen measured to a depth of 61 cm and nitrogen applied broadcast at time of seeding.”
Claim · model-written summary
Postemergent soil and foliar nitrogen increased protein more than equivalent broadcast nitrogen in 1971, but not 1970.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- Soil- and foliar-applied postemergent nitrogen applicationse0
- Outcome
- protein contente0
- Direction
- increasede0
- Qualifier
- during 1971, but not in 1970e0
- Comparator
- equivalent rates of nitrogen-applied broadcast at time of seedinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil- and foliar-applied postemergent nitrogen applications increased the protein content more than equivalent rates of nitrogen-applied broadcast at time of seeding in field studies conducted during 1971, but not in 1970.”
t0“NEEPAWA WHEAT”
Claim · model-written summary
Foliar application led to less than 1% of fertilizer nitrogen absorbed into wheat grain.
- Taxon
- wheatTriticum aestivume0
- Treatment
- applied to the foliar surfacese0
- Outcome
- nitrogen from ammonium nitrate, urea, or ammonium sulfate was absorbed into the graine0
- Value
- less than 1%e0
Not reportedComparatorSettingDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“usually less than 1% of the nitrogen from ammonium nitrate, urea, or ammonium sulfate was absorbed into the grain when applied to the foliar surfaces of wheat”
Claim · model-written summary
Soil application led to more than 30% of fertilizer nitrogen being absorbed into grain.
- Taxon
- wheatTriticum aestivume1
- Treatment
- soil appliede0
- Outcome
- nitrogen from these fertilizers was absorbede0
- Value
- greater than 30%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“usually greater than 30% of the nitrogen from these fertilizers was absorbed when soil applied”
e1“foliar surfaces of wheat”
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