Abstract
Abstract Influence of nitrogen supply on water consumption and dry matter production of sugar beet in pot experiments This paper describes the influence of nitrogen on water consumption, dry matter production and water use efficiency (WUE) of sugar beet. The experiments, conducted in 1988 and 1989 using sand culture in pots, included five nitrogen levels from 2 to 16 g/pot. Beet roots were heaviest where the N‐supply was 8 g/pot. Top weight increased considerably up to 16 g N/ pot. Therefore plant dry weight was greatest where the N‐supply was maximum. Overall, in 1989 dry matter production (g/pot) was 20 % greater than in 1988 because the beet roots were heavier. Water consumption increased with nitrogen supply. At the largest N‐doses water consumption was 110 1 (1988) and 140 1 (1989). This was three times the amount used at the smallest N‐supply. Over the whole season WUE was greatest at 4 g N/pot and lower at both extremes of N‐supply. Independently of N‐supply, production of plant dry matter per litre of water consumed was between 4.9 and 6.0 g. For root dry matter, equivalent values were 3.7 and 4.6 g/l, and for white sugar yield they were 2.3 and 3.1 g/1
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Claims 13
Claim · model-written summary
Sugar beet roots were heaviest at 8 g/pot nitrogen.
- Taxon
- Beet
Beta vulgarise0 - Treatment
- N‐supply was 8 g/pote0
- Outcome
- Beet rootse0
- Direction
- heavieste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Beet roots were heaviest where the N‐supply was 8 g/pot”
Claim · model-written summary
Sugar beet top weight increased up to 16 g N/ pot.
Not reportedComparator
Verbatim
t0“Zuckerrübe”
e0“Top weight increased considerably up to 16 g N/ pot”
Claim · model-written summary
Plant dry weight was greatest at maximum nitrogen supply.
Not reportedComparator
Verbatim
t0“Zuckerrübe”
e0“plant dry weight was greatest where the N‐supply was maximum”
Claim · model-written summary
Dry matter production was 20% greater in 1989 than 1988.
Verbatim
t0“Zuckerrübe”
e0“in 1989 dry matter production (g/pot) was 20 % greater than in 1988”
Claim · model-written summary
Water consumption increased with nitrogen supply.
Not reportedComparator
Verbatim
t0“Zuckerrübe”
e0“Water consumption increased with nitrogen supply”
Claim · model-written summary
At the largest nitrogen doses, water consumption was 110 1 in 1988.
Verbatim
t0“Zuckerrübe”
e0“At the largest N‐doses water consumption was 110 1 (1988)”
Claim · model-written summary
At the largest nitrogen doses, water consumption was 140 1 in 1989.
Verbatim
t0“Zuckerrübe”
e0“At the largest N‐doses water consumption was 110 1 (1988) and 140 1 (1989)”
Claim · model-written summary
Maximum-dose water consumption was three times that at the smallest nitrogen supply.
Not reportedTreatmentDirection
Verbatim
t0“Zuckerrübe”
e0“This was three times the amount used at the smallest N‐supply”
Claim · model-written summary
Seasonal WUE was greatest at 4 g N/pot.
Not reportedComparator
Verbatim
t0“Zuckerrübe”
e0“Over the whole season WUE was greatest at 4 g N/pot”
Claim · model-written summary
Seasonal WUE was lower at both extremes of nitrogen supply.
Verbatim
t0“Zuckerrübe”
e0“WUE was greatest at 4 g N/pot and lower at both extremes of N‐supply”
Claim · model-written summary
Plant dry matter per litre of water was 4.9 to 6.0 g independent of nitrogen supply.
Verbatim
t0“Zuckerrübe”
e0“production of plant dry matter per litre of water consumed was between 4.9 and 6.0 g”
Claim · model-written summary
Root dry matter per litre of water was 3.7 to 4.6 g/l.
Verbatim
t0“Zuckerrübe”
e0“For root dry matter, equivalent values were 3.7 and 4.6 g/l”
Claim · model-written summary
White sugar yield per litre of water was 2.3 to 3.1 g/1.
Verbatim
t0“Zuckerrübe”
e0“for white sugar yield they were 2.3 and 3.1 g/1”
The same questions in other papers
nitrogen · organism · Beta vulgaris (beet)Positive and negative results
6 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- positive
5 papers more in this group
See all 9 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.