Abstract
Abstract Sugar beet ( Beta vulgaris , cv Novadima) was grown from 1980 to 1988 on a luvisol from loess in Northwest‐Germany always at the same uniformly cropped site. N‐fertilizer levels ranged from 2 to 211 kg N/ha. Root yield, sugar yield and white sugar yield increased with increasing N‐supply and reached maximum values at 159, 136 and 129 kg N/ha, respectively. Root yield showed no or only a slight decrease, whereas sugar yield and white sugar yield decreased with N‐levels beyond optimum. Sugar concentration and white sugar concentration decreased with increasing N‐supply, white sugar concentration showed a greater response. Sugar concentration was highest at 32 kg N/ha and decreased slightly with less N‐supply. Concentration of potassium was not altered, the concentration of amino‐N showed a great increase and sodium increased slightly with more N, being lowest at 36 kg N/ha with a very small increase with less N. Sugar loss was less affected than concentration of sodium and amino‐N and response of sugar gain was lower than response of sugar loss. White sugar yield formed a broad optimum and decreased by only 2% from the maximum value within a range of approx. 100 kg N/ha.
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Claims 16
Claim · model-written summary
Root yield increased with nitrogen supply, peaking at 159 kg N/ha.
- Taxon
- Sugar Beet
Beta vulgaris subsp. vulgarist0 - Treatment
- increasing N‐supplye0
- Outcome
- Root yielde0
- Direction
- increasede0
- Value
- 159e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root yield, sugar yield and white sugar yield increased with increasing N‐supply and reached maximum values at 159, 136 and 129 kg N/ha, respectively.”
t0“Sugar Beet”
Claim · model-written summary
Sugar yield increased with nitrogen supply, peaking at 136 kg N/ha.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- increasing N‐supplye0
- Outcome
- sugar yielde0
- Direction
- increasede0
- Value
- 136e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root yield, sugar yield and white sugar yield increased with increasing N‐supply and reached maximum values at 159, 136 and 129 kg N/ha, respectively.”
t0“Sugar Beet”
Claim · model-written summary
White sugar yield increased with nitrogen supply, peaking at 129 kg N/ha.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- increasing N‐supplye0
- Outcome
- white sugar yielde0
- Direction
- increasede0
- Value
- 129 kg N/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root yield, sugar yield and white sugar yield increased with increasing N‐supply and reached maximum values at 159, 136 and 129 kg N/ha, respectively.”
t0“Sugar Beet”
Claim · model-written summary
Root yield had no or a slight decrease above its nitrogen optimum.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Outcome
- Root yielde0
- Direction
- no or only a slight decreasee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root yield showed no or only a slight decrease”
t0“Sugar Beet”
Claim · model-written summary
Sugar and white sugar yield fell at nitrogen levels above optimum.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- N‐levels beyond optimume0
- Outcome
- sugar yield and white sugar yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sugar yield and white sugar yield decreased with N‐levels beyond optimum.”
t0“Sugar Beet”
Claim · model-written summary
Sugar concentration decreased as nitrogen supply increased.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- increasing N‐supplye0
- Outcome
- Sugar concentratione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sugar concentration and white sugar concentration decreased with increasing N‐supply”
t0“Sugar Beet”
Claim · model-written summary
White sugar concentration decreased as nitrogen supply increased, with a greater response than sugar concentration.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- increasing N‐supplye0
- Outcome
- white sugar concentratione0
- Direction
- decreasede0
- Qualifier
- greater responsee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sugar concentration and white sugar concentration decreased with increasing N‐supply, white sugar concentration showed a greater response.”
t0“Sugar Beet”
Claim · model-written summary
Sugar concentration was highest at 32 kg N/ha.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Outcome
- Sugar concentratione0
- Direction
- higheste0
- Value
- 32 kg N/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sugar concentration was highest at 32 kg N/ha”
t0“Sugar Beet”
Claim · model-written summary
Sugar concentration declined slightly at nitrogen supply below 32 kg N/ha.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- less N‐supplye0
- Outcome
- Sugar concentratione0
- Direction
- decreased slightlye0
- Comparator
- 32 kg N/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sugar concentration was highest at 32 kg N/ha and decreased slightly with less N‐supply.”
t0“Sugar Beet”
Claim · model-written summary
Potassium concentration was unchanged with more nitrogen.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Outcome
- Concentration of potassiume0
- Direction
- not alterede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentration of potassium was not altered”
t0“Sugar Beet”
Claim · model-written summary
Amino-N concentration increased greatly with more nitrogen.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Outcome
- concentration of amino‐Ne0
- Direction
- great increasee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the concentration of amino‐N showed a great increase”
t0“Sugar Beet”
Claim · model-written summary
Sodium concentration increased slightly with more nitrogen, with its minimum at 36 kg N/ha.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- more Ne0
- Outcome
- sodiume0
- Direction
- increased slightlye0
- Value
- 36 kg N/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sodium increased slightly with more N, being lowest at 36 kg N/ha with a very small increase with less N.”
t0“Sugar Beet”
Claim · model-written summary
Sodium rose very slightly below 36 kg N/ha.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- less Ne0
- Outcome
- sodiume0
- Direction
- very small increasee0
- Comparator
- 36 kg N/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sodium increased slightly with more N, being lowest at 36 kg N/ha with a very small increase with less N.”
t0“Sugar Beet”
Claim · model-written summary
Sugar loss responded less to nitrogen than sodium and amino-N concentrations.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Outcome
- Sugar losse0
- Direction
- less affectede0
- Comparator
- concentration of sodium and amino‐Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sugar loss was less affected than concentration of sodium and amino‐N”
t0“Sugar Beet”
Claim · model-written summary
Sugar gain responded less than sugar loss.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Outcome
- response of sugar gaine0
- Direction
- lowere0
- Comparator
- response of sugar losse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“response of sugar gain was lower than response of sugar loss”
t0“Sugar Beet”
Claim · model-written summary
White sugar yield dropped only 2% over a nitrogen range of about 100 kg N/ha around its broad optimum.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Outcome
- White sugar yielde0
- Direction
- decreasede0
- Value
- 2%e0
- Qualifier
- approx. 100 kg N/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“White sugar yield formed a broad optimum and decreased by only 2% from the maximum value within a range of approx. 100 kg N/ha.”
t0“Sugar Beet”
The same questions in other papers
nitrogen · quality: sugar starch · Beta vulgaris (beet)Results differ
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- no effect
- negative
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141 papers in the same direction as this paper · 16 in the opposite direction · 3 reporting no difference from an alternative
- positive
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See all 161 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.