Abstract
In response to the Sustainable Development Goals (SDGs) adopted by United Nations, combining using straw mulching, the proper crop planting date, and regulated deficit irrigation (RDI) is fundamental to adapt to climate change and to promote sustainable agriculture in the dry Mediterranean region. Two-year pot experiment under field conditions (2017 and 2018) was conducted in Damascus Countryside, Syria (altitude 600 m), to evaluate the onion crop response to early planting, irrigation level, and straw mulching. Treatments composed of three different planting dates with 28-day intervals (two early dates in February and March, and the traditional date in April), three irrigation levels (100, 80, and 60% of crop evapotranspiration, ETc), and two types of soil cover (with and without wheat straw mulch), with three replicates. Findings revealed that the seasonal ETc decreased from about 900 mm under current practice (planting in April without mulch) to only about 550 mm under both straw mulch and earliness in planting. Large bulb yield increases (more than double) were also obtained. Moreover, early planting using straw mulching significantly enhanced the onion crop response to RDI, even at 60% of ETc. Combining early planting in February, straw mulching, and full irrigation represents the best agricultural management.
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Claims 4
Claim · model-written summary
Early planting with straw mulch reduced seasonal ETc from about 900 mm to about 550 mm relative to April planting without mulch.
- Taxon
- onion
Allium cepat0 - Treatment
- straw mulch and earliness in plantinge0
- Outcome
- seasonal ETce0
- Direction
- decreasede0
- Value
- about 550 mme0
- Qualifier
- about 900 mme0
- Comparator
- planting in April without mulche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the seasonal ETc decreased from about 900 mm under current practice (planting in April without mulch) to only about 550 mm under both straw mulch and earliness in planting”
t0“onion crop”
Claim · model-written summary
Early planting with straw mulch more than doubled bulb yield.
- Taxon
- onionAllium cepat0
- Treatment
- straw mulch and earliness in plantinge0
- Outcome
- bulb yielde0
- Direction
- increasese0
- Value
- more than doublee0
- Comparator
- planting in April without mulche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the seasonal ETc decreased from about 900 mm under current practice (planting in April without mulch) to only about 550 mm under both straw mulch and earliness in planting. Large bulb yield increases (more than double) were also obtained”
t0“onion crop”
Claim · model-written summary
Early planting with straw mulch significantly improved onion response to regulated deficit irrigation, even at 60% ETc.
- Taxon
- onionAllium cepae0
- Treatment
- early planting using straw mulchinge0
- Outcome
- onion crop response to RDIe0
- Direction
- enhancede0
- Qualifier
- 60% of ETce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“early planting using straw mulching significantly enhanced the onion crop response to RDI, even at 60% of ETc”
Claim · model-written summary
The authors recommend February planting with straw mulch and full irrigation as the best management.
- Taxon
- onionAllium cepat0
- Outcome
- early planting in February, straw mulching, and full irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combining early planting in February, straw mulching, and full irrigation represents the best agricultural management”
t0“onion crop”
The same questions in other papers
organic · yield · Allium cepa (onion)Results differ
19 papers in the same direction as this paper · 7 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- no effect
- no effect
25 papers more in this group
See all 29 papers →organic · organism · Allium cepa (onion)Results agree
1 paper in the same direction as this paper
- positive
organic · physiology: water · Allium cepa (onion)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.