Abstract
Core Ideas Different growth stages of drip‐irrigated sugar beet can bear different water deficit level. The canopy development stage is the most water‐sensitive period of the sugar beet. Regulated deficit irrigation could increase beet yield and reduce the consumption of water resources in arid land. ABSTRACT The shortage of water resources promotes the development of water saving irrigation in arid land. Regulated deficit irrigation (RDI), as one of the water‐saving irrigation technologies through applying a certain amount of water stress to the crops to promote the distribution of the photosynthate of crops to the needs of the tissues and organs, can save water and may increase yield. Our study evaluated the effect of the RDI on the sugar beet ( Beta vulgaris L. cv. Beta356). Seven irrigation treatments were applied based on the growth stages of sugar beet (canopy development, storage root development, and sugar accumulation) and water deficit levels (30, 50, and 70% of field capacity [FC]). The yield, quality, sugar yield, irrigation water use efficiency (IWUE), and agronomic physiological traits of sugar beet were evaluated. Moderate water deficit (50% of FC) during canopy development increased sugar yield by 27% compared with the control (70% of FC during the whole growth stages). Severe (30% of FC) water deficit increased sugar yield by 45% during storage root development, and by 55% during sugar accumulation. The RDI during canopy development and storage root development inhibited leaf growth but did not affect yield. Malondialdehyde content and relative conductivity increased significantly when soil water content dropped to the irrigation threshold levels (i.e., 30% and 50% of FC) before rehydration during canopy development. After rehydration, there were significant increases in peroxidase activity and proline content (indicators of antioxidant defense and osmotic stress). Our results indicated that RDI increased yield at 30% and 50% of FC during three growth stages (canopy development, storage root development, and sugar accumulation) of sugar beet, which reduced irrigation water requirements. RDI could be applied as a strategic action for crop sustainability and water saving in arid land.
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Claims 13
Claim · model-written summary
Moderate canopy-stage deficit increased sugar yield 27% over the control.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarist0 - Treatment
- Moderate water deficit (50% of FC) during canopy developmente0
- Outcome
- sugar yielde0
- Direction
- increasede0
- Value
- 27%e0
- Comparator
- control (70% of FC during the whole growth stages)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moderate water deficit (50% of FC) during canopy development increased sugar yield by 27% compared with the control (70% of FC during the whole growth stages).”
t0“Sugar Beet”
Claim · model-written summary
Severe deficit during storage-root development increased sugar yield 45%.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Organ / stage
- storage root developmente0
- Treatment
- Severe (30% of FC) water deficite0
- Outcome
- sugar yielde0
- Direction
- increasede0
- Value
- 45%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Severe (30% of FC) water deficit increased sugar yield by 45% during storage root development”
t0“Sugar Beet”
Claim · model-written summary
Severe deficit during sugar accumulation increased sugar yield 55%.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Organ / stage
- sugar accumulatione0
- Treatment
- Severe (30% of FC) water deficite0
- Outcome
- sugar yielde0
- Direction
- increasede0
- Value
- 55%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Severe (30% of FC) water deficit increased sugar yield by 45% during storage root development, and by 55% during sugar accumulation.”
t0“Sugar Beet”
Claim · model-written summary
Deficit irrigation during canopy development inhibited leaf growth.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- RDI during canopy developmente0
- Outcome
- leaf growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RDI during canopy development and storage root development inhibited leaf growth but did not affect yield.”
t0“Sugar Beet”
Claim · model-written summary
Deficit irrigation during storage-root development inhibited leaf growth.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- RDI during canopy development and storage root developmente0
- Outcome
- leaf growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RDI during canopy development and storage root development inhibited leaf growth but did not affect yield.”
t0“Sugar Beet”
Claim · model-written summary
Deficit irrigation in the two stages did not affect yield.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- RDI during canopy development and storage root developmente0
- Outcome
- yielde0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RDI during canopy development and storage root development inhibited leaf growth but did not affect yield.”
t0“Sugar Beet”
Claim · model-written summary
Malondialdehyde content increased significantly before rehydration at irrigation thresholds.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- 30% and 50% of FCe0
- Outcome
- Malondialdehyde contente0
- Direction
- increasede0
- Qualifier
- before rehydration during canopy developmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Malondialdehyde content and relative conductivity increased significantly when soil water content dropped to the irrigation threshold levels (i.e., 30% and 50% of FC) before rehydration during canopy development.”
t0“Sugar Beet”
Claim · model-written summary
Relative conductivity increased significantly before rehydration at irrigation thresholds.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- 30% and 50% of FCe0
- Outcome
- relative conductivitye0
- Direction
- increasede0
- Qualifier
- before rehydration during canopy developmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Malondialdehyde content and relative conductivity increased significantly when soil water content dropped to the irrigation threshold levels (i.e., 30% and 50% of FC) before rehydration during canopy development.”
t0“Sugar Beet”
Claim · model-written summary
Peroxidase activity increased significantly after rehydration.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- rehydratione0
- Outcome
- peroxidase activitye0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After rehydration, there were significant increases in peroxidase activity and proline content”
t0“Sugar Beet”
Claim · model-written summary
Proline content increased significantly after rehydration.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- rehydratione0
- Outcome
- proline contente0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After rehydration, there were significant increases in peroxidase activity and proline content”
t0“Sugar Beet”
Claim · model-written summary
Deficit irrigation at 30% and 50% FC increased yield across three stages.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- RDIe0
- Outcome
- yielde0
- Direction
- increasede0
- Qualifier
- 30% and 50% of FC during three growth stagese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RDI increased yield at 30% and 50% of FC during three growth stages (canopy development, storage root development, and sugar accumulation) of sugar beet”
Claim · model-written summary
Deficit irrigation reduced irrigation water requirements.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- Regulated Deficit Irrigationt0
- Outcome
- irrigation water requirementse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which reduced irrigation water requirements”
t0“Regulated Deficit Irrigation at Special Development Stages Increases Sugar Beet Yield”
Claim · model-written summary
The authors recommend deficit irrigation for sustainability and water saving in arid land.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Outcome
- RDI could be applied as a strategic action for crop sustainability and water saving in arid lande0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RDI could be applied as a strategic action for crop sustainability and water saving in arid land.”
t0“Sugar Beet”
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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.