Abstract
Abstract Enhancing water productivity for sustainable crop production and water savings represents a major challenge for agricultural water management. Pot experiments under open field conditions were conducted for two years, 2016 and 2017, to assess the effects of regulated deficit irrigation under mulch on onion crop production, following a 2 × 3 factorial experiment with two soil cover systems (wheat straw mulch and no-mulch) and three irrigation levels (100%, 80%, and 60% of crop evapotranspiration), with six replications.The results indicated that onion plants were responsive to straw mulching. Bulb diameter, total yield, dry matter, and water productivity were significantly enhanced under mulch whatever the irrigation level used. The seasonal crop water requirements also considerably decreased (about 33%). The results also showed the sensitivity of onion to water stress. Yield, dry matter, and water productivity were higher under full irrigation compared to the deficit irrigation. However, when mulch was used, regulated deficit irrigation highly significantly improved water productivity and onion crop quality and quantity; and this approach could be a promising management practice to meet water shortage consequences in the dry Mediterranean region.
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Claims 5
Claim · model-written summary
Mulch significantly enhanced onion bulb diameter, total yield and dry matter across irrigation levels.
- Taxon
- Onion
Allium cepat0 - Treatment
- mulche0
- Outcome
- Bulb diameter, total yield, dry mattere0
- Direction
- enhancede0
- Qualifier
- whatever the irrigation level usede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Onion”
e0“Bulb diameter, total yield, dry matter, and water productivity were significantly enhanced under mulch whatever the irrigation level used.”
Claim · model-written summary
Mulch significantly enhanced onion water productivity across irrigation levels.
- Taxon
- OnionAllium cepat0
- Treatment
- mulche0
- Outcome
- water productivitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Onion”
e0“Bulb diameter, total yield, dry matter, and water productivity were significantly enhanced under mulch whatever the irrigation level used.”
Claim · model-written summary
Mulch decreased seasonal crop water requirements by about 33%.
- Taxon
- OnionAllium cepat0
- Treatment
- straw mulchinge1
- Outcome
- seasonal crop water requirementse0
- Direction
- decreasede0
- Value
- about 33%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Onion”
e0“The seasonal crop water requirements also considerably decreased (about 33%).”
e1“onion plants were responsive to straw mulching.”
Claim · model-written summary
Full irrigation produced higher onion yield, dry matter and water productivity than deficit irrigation.
- Taxon
- OnionAllium cepat0
- Treatment
- full irrigatione0
- Outcome
- Yield, dry matter, and water productivitye0
- Direction
- highere0
- Comparator
- deficit irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Onion”
e0“Yield, dry matter, and water productivity were higher under full irrigation compared to the deficit irrigation.”
Claim · model-written summary
With mulch, regulated deficit irrigation significantly improved onion water productivity and crop quality and quantity.
- Taxon
- onionAllium cepae0
- Treatment
- regulated deficit irrigatione0
- Outcome
- water productivity and onion crop quality and quantitye0
- Direction
- improvede0
- Qualifier
- when mulch was usede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when mulch was used, regulated deficit irrigation highly significantly improved water productivity and onion crop quality and quantity”
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See all 8 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.