Abstract
Summary The amount of soil moisture used by sugar beet was determined weekly between May and October (1970–2) in plots testing 18500 and 124000 plants/ha with and without irrigation. When leaves covered more than 60% of the ground (after mid-June with the large density and after mid-July with the small density) the crop used water at the potential transpiration rate even with soil moisture deficits on plots without irrigation of up to 170 mm. Therefore as irrigation greatly increased sugar yield in 1970 and 1972, it probably did not do so simply by satisfying the crop's water need. In 1970 irrigation appeared to act partly by decreasing the time taken to attain complete leaf cover but in 1972 irrigation had only a slight effect on leaf cover but greatly increased sugar yield, particularly of the large population. With little rainfall, the large density rapidly exhausted the available moisture from the plough layer. It seems likely therefore that irrigation increased yield by giving more leaf cover early and by improving nutrient supply but not by supplying extra water for transpiration.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Sugar beet used water at potential transpiration rate after canopy cover exceeded 60%, even under deficits up to 170 mm.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarist0 - Outcome
- potential transpiration ratee0
- Qualifier
- soil moisture deficits on plots without irrigation of up to 170 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When leaves covered more than 60% of the ground (after mid-June with the large density and after mid-July with the small density) the crop used water at the potential transpiration rate even with soil moisture deficits on plots without irrigation of up to 170 mm.”
t0“sugar beet”
Claim · model-written summary
Irrigation greatly increased sugar yield in 1970 and 1972.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- irrigatione0
- Outcome
- sugar yielde0
- Direction
- greatly increasede0
- Qualifier
- 1970 and 1972e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigation greatly increased sugar yield in 1970 and 1972”
t0“sugar beet”
Claim · model-written summary
In 1970 irrigation appeared to shorten time to complete leaf cover.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- irrigatione0
- Outcome
- time taken to attain complete leaf covere0
- Direction
- decreasinge0
- Qualifier
- In 1970e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1970 irrigation appeared to act partly by decreasing the time taken to attain complete leaf cover”
t0“sugar beet”
Claim · model-written summary
In 1972 irrigation had only a slight effect on leaf cover.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- irrigatione0
- Outcome
- leaf covere0
- Qualifier
- in 1972e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in 1972 irrigation had only a slight effect on leaf cover”
t0“sugar beet”
Claim · model-written summary
In 1972 irrigation greatly increased sugar yield, especially at high density.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- irrigatione0
- Outcome
- sugar yielde0
- Direction
- greatly increasede0
- Qualifier
- particularly of the large populatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in 1972 irrigation had only a slight effect on leaf cover but greatly increased sugar yield, particularly of the large population.”
t0“sugar beet”
Claim · model-written summary
At low rainfall, high plant density quickly exhausted moisture in the plough layer.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- large densitye0
- Outcome
- available moisture from the plough layere0
- Direction
- exhaustede0
- Qualifier
- With little rainfalle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With little rainfall, the large density rapidly exhausted the available moisture from the plough layer.”
t0“sugar beet”
The same questions in other papers
irrigation · quality: sugar starch · Beta vulgaris (beet)Positive and negative results
29 papers in the same direction as this paper · 14 in the opposite direction
- no effect
- negative
- no effect
40 papers more in this group
See all 44 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.