Abstract
Summary Seven field experiments were made on the effect of two harvesting dates on the nitrogen requirements of sugar beet. All were on Rauceby series soils overlying oolitic limestone in Lincolnshire. Nitrogen fertilizer increased sugar yield in all experiments, and yield was considerably higher at the mid-December harvest than in early October. On average, the sugar-yield response to nitrogen was greater at the late harvest, and the requirement for nitrogen was about 45 kg/ha higher then than at the early harvest. Sugar content was depressed less at the late harvest than at the early by increasing nitrogen rate. These results suggest that farmers should apply more nitrogen to fields that they plan to harvest late than to early-harvested fields; they also have implications for the conduct and interpretation of nitrogen response experiments on sugar beet.
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Claims 6
Claim · model-written summary
Nitrogen fertilizer increased sugar beet sugar yield in all experiments.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarist0 - Treatment
- Nitrogen fertilizere1
- Outcome
- sugar yielde1
- Direction
- increasede1
- Setting
- Lincolnshiree2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Nitrogen fertilizer increased sugar yield in all experiments”
e2“All were on Rauceby series soils overlying oolitic limestone in Lincolnshire”
t0“Nitrogen requirements of sugar beet in relation to harvesting date”
Claim · model-written summary
Sugar beet yield was considerably higher at the mid-December harvest than at the early October harvest.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- mid-December harveste3
- Outcome
- yielde3
- Direction
- highere3
- Comparator
- early Octobere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“yield was considerably higher at the mid-December harvest than in early October”
t0“Nitrogen requirements of sugar beet in relation to harvesting date”
Claim · model-written summary
Sugar-yield response to nitrogen was greater at the late harvest.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- late harveste4
- Outcome
- sugar-yield response to nitrogene4
- Direction
- greatere4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“On average, the sugar-yield response to nitrogen was greater at the late harvest”
t0“Nitrogen requirements of sugar beet in relation to harvesting date”
Claim · model-written summary
Nitrogen requirement was about 45 kg/ha higher for the late harvest than for the early harvest.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- late harveste4
- Outcome
- requirement for nitrogene5
- Direction
- highere5
- Value
- about 45 kg/hae5
- Comparator
- early harveste5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“On average, the sugar-yield response to nitrogen was greater at the late harvest”
e5“the requirement for nitrogen was about 45 kg/ha higher then than at the early harvest”
t0“Nitrogen requirements of sugar beet in relation to harvesting date”
Claim · model-written summary
Sugar content was depressed less at the late harvest than at the early harvest as nitrogen rate increased.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- increasing nitrogen ratee6
- Outcome
- Sugar contente6
- Direction
- depressed lesse6
- Comparator
- earlye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Sugar content was depressed less at the late harvest than at the early by increasing nitrogen rate”
t0“Nitrogen requirements of sugar beet in relation to harvesting date”
Claim · model-written summary
Authors recommend applying more nitrogen to sugar beet fields planned for late harvest than to early-harvested fields.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Outcome
- apply more nitrogen to fields that they plan to harvest latee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“farmers should apply more nitrogen to fields that they plan to harvest late than to early-harvested fields”
t0“Nitrogen requirements of sugar beet in relation to harvesting date”
The same questions in other papers
nitrogen · quality: sugar starch · Beta vulgaris (beet)Results differ
65 papers in the same direction as this paper · 36 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- negative
99 papers more in this group
See all 103 papers →fertilization · quality: sugar starch · Beta vulgaris (beet)Results differ
87 papers in the same direction as this paper · 17 in the opposite direction
- negative
- no effect
- no effect
101 papers more in this group
See all 105 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.