Abstract
Abstract S.22 Italian ryegrass grown in a glasshouse during June on clay loam soil at three light intensities (100, 68 and 44% of daylight), was given 6 amounts of N (0–500 ppm) as NH 4 + ‐N or NO 3 − ‐N. Grass grew best in 100% daylight, and with NH 4 + ‐N yields were most at 500 ppm and with NO 3 − ‐N at 200 ppm. Total‐N, total soluble‐N and nitrate‐N, were much more, and protein‐N, amide‐N (psrticularly asparagine‐N) and α‐amino‐N much less in grass given NO 3 − ‐N than in grass given NH 4 + ‐N. These differences increased with increasing amounts of applied N. Shading, or increasing the amount of N increased total‐N, total soluble‐N, soluble organic‐N and nitrate‐N, and decreased protein‐N and soluble carbohydrates. Light intensity had most effect on the amount of solyble carbohydrates in grass given 100 ppm of N and the effect decreased with increasing amounts of N. ‘N‐Serve’ indirectly influenced the chemical composition of grass by maintaining N in the soil in the NH 4 + ‐N form.
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Claims 12
Claim · model-written summary
Ryegrass grew best under full daylight.
- Taxon
- Italian ryegrass
Lolium multiflorumt0 - Treatment
- 100% daylighte0
- Outcome
- Grass grewe0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grass grew best in 100% daylight”
t0“Italian ryegrass”
Claim · model-written summary
With ammonium nitrogen, yield was greatest at 500 ppm.
- Taxon
- Italian ryegrassLolium multiflorumt0
- Treatment
- NH 4 + ‐Ne0
- Outcome
- yieldse0
- Direction
- moste0
- Value
- 500 ppme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with NH 4 + ‐N yields were most at 500 ppm”
t0“Italian ryegrass”
Claim · model-written summary
With nitrate nitrogen, yield was greatest at 200 ppm.
- Taxon
- Italian ryegrassLolium multiflorumt0
- Treatment
- NO 3 − ‐Ne0
- Outcome
- yieldse1
- Value
- 200 ppme0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with NO 3 − ‐N at 200 ppm”
e1“with NH 4 + ‐N yields were most at 500 ppm”
t0“Italian ryegrass”
Claim · model-written summary
Nitrate nitrogen produced more total N, total soluble N and nitrate N than ammonium nitrogen.
- Taxon
- Italian ryegrassLolium multiflorumt0
- Treatment
- NO 3 − ‐Ne0
- Outcome
- Total‐N, total soluble‐N and nitrate‐Ne0
- Direction
- much moree0
- Comparator
- NH 4 + ‐Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total‐N, total soluble‐N and nitrate‐N, were much more, and protein‐N, amide‐N (psrticularly asparagine‐N) and α‐amino‐N much less in grass given NO 3 − ‐N than in grass given NH 4 + ‐N.”
t0“Italian ryegrass”
Claim · model-written summary
Nitrate nitrogen produced less protein N, amide N and alpha amino N than ammonium nitrogen.
- Taxon
- Italian ryegrassLolium multiflorumt0
- Treatment
- NO 3 − ‐Ne0
- Outcome
- protein‐N, amide‐N (psrticularly asparagine‐N) and α‐amino‐Ne0
- Direction
- much lesse0
- Comparator
- NH 4 + ‐Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“protein‐N, amide‐N (psrticularly asparagine‐N) and α‐amino‐N much less in grass given NO 3 − ‐N than in grass given NH 4 + ‐N.”
t0“Italian ryegrass”
Claim · model-written summary
Nitrogen-form differences grew with increasing applied N.
- Taxon
- Italian ryegrassLolium multiflorumt0
- Treatment
- increasing amounts of applied Ne0
- Outcome
- differencese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These differences increased with increasing amounts of applied N.”
t0“Italian ryegrass”
Claim · model-written summary
Shading increased total N, soluble N, soluble organic N and nitrate N.
- Taxon
- Italian ryegrassLolium multiflorumt0
- Treatment
- Shadinge0
- Outcome
- total‐N, total soluble‐N, soluble organic‐N and nitrate‐Ne0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shading, or increasing the amount of N increased total‐N, total soluble‐N, soluble organic‐N and nitrate‐N, and decreased protein‐N and soluble carbohydrates.”
t0“Italian ryegrass”
Claim · model-written summary
Increasing applied nitrogen increased total N, soluble N, soluble organic N and nitrate N.
- Taxon
- Italian ryegrassLolium multiflorumt0
- Treatment
- increasing the amount of Ne0
- Outcome
- total‐N, total soluble‐N, soluble organic‐N and nitrate‐Ne0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shading, or increasing the amount of N increased total‐N, total soluble‐N, soluble organic‐N and nitrate‐N, and decreased protein‐N and soluble carbohydrates.”
t0“Italian ryegrass”
Claim · model-written summary
Shading decreased protein N and soluble carbohydrates.
- Taxon
- Italian ryegrassLolium multiflorumt0
- Treatment
- Shadinge0
- Outcome
- protein‐N and soluble carbohydratese0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shading, or increasing the amount of N increased total‐N, total soluble‐N, soluble organic‐N and nitrate‐N, and decreased protein‐N and soluble carbohydrates.”
t0“Italian ryegrass”
Claim · model-written summary
Increasing applied nitrogen decreased protein N and soluble carbohydrates.
- Taxon
- Italian ryegrassLolium multiflorumt0
- Treatment
- increasing the amount of Ne0
- Outcome
- protein‐N and soluble carbohydratese0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shading, or increasing the amount of N increased total‐N, total soluble‐N, soluble organic‐N and nitrate‐N, and decreased protein‐N and soluble carbohydrates.”
t0“Italian ryegrass”
Claim · model-written summary
Light had its strongest effect on soluble carbohydrates at 100 ppm nitrogen and less effect at higher nitrogen.
- Taxon
- Italian ryegrassLolium multiflorumt0
- Treatment
- Light intensitye0
- Outcome
- amount of solyble carbohydratese0
- Direction
- moste0
- Qualifier
- 100 ppm of Ne0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light intensity had most effect on the amount of solyble carbohydrates in grass given 100 ppm of N and the effect decreased with increasing amounts of N.”
t0“Italian ryegrass”
Claim · model-written summary
N-Serve influenced grass composition indirectly by keeping soil N in ammonium form.
- Taxon
- Italian ryegrassLolium multiflorumt0
- Treatment
- ‘N‐Serve’e0
- Outcome
- chemical composition of grasse0
- Qualifier
- maintaining N in the soil in the NH 4 + ‐N forme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘N‐Serve’ indirectly influenced the chemical composition of grass by maintaining N in the soil in the NH 4 + ‐N form.”
t0“Italian ryegrass”