Abstract
Field experiments were performed for two growing seasons in Spain under Mediterranean conditions to evaluate the response of onion growth, plant water status, bulb yield, irrigation water use efficiency (IWUE), and gross revenue to regulated deficit irrigation strategies (RDI). Seven irrigation treatments were utilized, including the application of 100% irrigation water requirements (IWR) during the entire growing season and the application of 75% or 50% of the IWR during one of the following growth stages: the vegetative growth, bulbing, and bulb ripening stages. The deficit irrigation strategies tested decreased marketable yields to greater or lesser extents; therefore, if water is readily available, full irrigation would be recommended. The RDI with 50% of the IWR during the bulb ripening stage led to important water savings (22%) and to slight decreases in yield (9%), improving IWUE (20%) compared with full irrigation, and this strategy can be recommended under a severe water shortage. A satisfactory bulb yield was obtained with RDI with 75% of the IWR during the bulb ripening stages, resulting in a lower reduction in yield (4%) and in an increased IWUE (9%); this strategy is an advisable strategy for onion production under a mild water shortage in Mediterranean conditions.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 9
Claim · model-written summary
Deficit irrigation strategies decreased marketable onion yields to greater or lesser extents.
- Taxon
- Onion
Allium cepat0 - Treatment
- deficit irrigation strategiese0
- Outcome
- marketable yieldse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The deficit irrigation strategies tested decreased marketable yields to greater or lesser extents”
t0“Onion Cultivation”
Claim · model-written summary
If water is readily available, full irrigation is recommended for onion.
- Taxon
- OnionAllium cepat0
- Outcome
- full irrigation would be recommendede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“if water is readily available, full irrigation would be recommended”
t0“Onion Cultivation”
Claim · model-written summary
RDI with 50% of the IWR during bulb ripening saved 22% of water compared with full irrigation.
- Taxon
- OnionAllium cepat0
- Treatment
- RDI with 50% of the IWR during the bulb ripening stagee0
- Outcome
- water savingse0
- Direction
- savingse0
- Value
- 22%e0
- Comparator
- full irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RDI with 50% of the IWR during the bulb ripening stage led to important water savings (22%) and to slight decreases in yield (9%), improving IWUE (20%) compared with full irrigation”
t0“Onion Cultivation”
Claim · model-written summary
RDI with 50% of the IWR during bulb ripening slightly decreased onion yield by 9% compared with full irrigation.
- Taxon
- OnionAllium cepat0
- Treatment
- RDI with 50% of the IWR during the bulb ripening stagee0
- Outcome
- yielde0
- Direction
- decreasese0
- Value
- 9%e0
- Comparator
- full irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RDI with 50% of the IWR during the bulb ripening stage led to important water savings (22%) and to slight decreases in yield (9%), improving IWUE (20%) compared with full irrigation”
t0“Onion Cultivation”
Claim · model-written summary
RDI with 50% of the IWR during bulb ripening improved IWUE by 20% compared with full irrigation.
- Taxon
- OnionAllium cepat0
- Treatment
- RDI with 50% of the IWR during the bulb ripening stagee0
- Outcome
- IWUEe0
- Direction
- improvinge0
- Value
- 20%e0
- Comparator
- full irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RDI with 50% of the IWR during the bulb ripening stage led to important water savings (22%) and to slight decreases in yield (9%), improving IWUE (20%) compared with full irrigation”
t0“Onion Cultivation”
Claim · model-written summary
The authors recommend RDI with 50% of the IWR during bulb ripening under a severe water shortage.
- Taxon
- OnionAllium cepat0
- Outcome
- recommended under a severe water shortagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this strategy can be recommended under a severe water shortage”
t0“Onion Cultivation”
Claim · model-written summary
RDI with 75% of the IWR during bulb ripening gave a lower reduction in onion yield of 4%.
- Taxon
- OnionAllium cepat0
- Treatment
- RDI with 75% of the IWR during the bulb ripening stagese0
- Outcome
- yielde0
- Direction
- reductione0
- Value
- 4%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A satisfactory bulb yield was obtained with RDI with 75% of the IWR during the bulb ripening stages, resulting in a lower reduction in yield (4%) and in an increased IWUE (9%)”
t0“Onion Cultivation”
Claim · model-written summary
RDI with 75% of the IWR during bulb ripening increased IWUE by 9%.
- Taxon
- OnionAllium cepat0
- Treatment
- RDI with 75% of the IWR during the bulb ripening stagese0
- Outcome
- IWUEe0
- Direction
- increasede0
- Value
- 9%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A satisfactory bulb yield was obtained with RDI with 75% of the IWR during the bulb ripening stages, resulting in a lower reduction in yield (4%) and in an increased IWUE (9%)”
t0“Onion Cultivation”
Claim · model-written summary
RDI with 75% of the IWR during bulb ripening is advisable for onion production under a mild water shortage in Mediterranean conditions.
- Taxon
- onionAllium cepae0
- Outcome
- advisable strategy for onion productione0
- Qualifier
- mild water shortagee0
- Setting
- Mediterranean conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this strategy is an advisable strategy for onion production under a mild water shortage in Mediterranean conditions”
The same questions in other papers
stage · physiology: water · Allium cepa (onion)Positive and negative results
1 in the opposite direction
- no effect
stage · yield · Allium cepa (onion)Positive and negative results
6 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
6 papers more in this group
See all 10 papers →irrigation · quality: postharvest · Allium cepa (onion)Positive and negative results
8 papers in the same direction as this paper · 25 in the opposite direction
- positive
- positive
- positive
30 papers more in this group
See all 34 papers →irrigation · physiology: water · Allium cepa (onion)Positive and negative results
46 papers in the same direction as this paper · 2 in the opposite direction
- positive
- negative
- negative
45 papers more in this group
See all 49 papers →irrigation · yield · Allium cepa (onion)Positive and negative results
26 papers in the same direction as this paper · 106 in the opposite direction
- positive
- negative
- positive
129 papers more in this group
See all 133 papers →harvest time · yield · Allium cepa (onion)Results agree
2 papers in the same direction as this paper
- no effect
- no effect
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.