Abstract
Increased salinity is a threat to arid and semiarid zone agriculture worldwide. Kale consumption has increased as its nutritional and antioxidant benefits become more widely known. Compared with other vegetables, it is relatively salt tolerant. However, there is limited information on its salt tolerance, nutrient uptake under saline conditions, and physiological response. We examined the yield response, physiological parameters, and mineral nutrient content of kale grown under variable conditions of salt and Se addition in a greenhouse study. The experiment consisted of four salinity levels, four Se levels, and combined salinity treatments for a total of 16 treatments each with four replications. Salinity decreased yield when irrigated at 6 and 9 dS m−1 but not at 3 dS m−1. Selenium addition increased yield at all salinity levels but did not increase salt tolerance. Addition of 0.25 mg Se per kg of soil, corresponding to leaf Se concentrations of 1 mg kg−1, was sufficient to increase yield by an average of 11% relative to control. Kale yield loss began between 3 and 6 dS m−1 irrigation water salinity and 50% yield loss occurred at EC 6.
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Claims 7
Claim · model-written summary
Salinity of 6 and 9 dS m−1 decreased kale yield.
- Taxon
- kale
Brassica oleracea var. viridise1 - Treatment
- 6 and 9 dS m−1e0
- Outcome
- yielde0
- Direction
- decreasede0
- Setting
- greenhousee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity decreased yield when irrigated at 6 and 9 dS m−1 but not at 3 dS m−1”
e1“kale grown under variable conditions”
e2“greenhouse study”
Claim · model-written summary
At 3 dS m−1, salinity did not decrease kale yield.
- Taxon
- kaleBrassica oleracea var. viridise1
- Treatment
- 3 dS m−1e0
- Outcome
- yielde0
- Direction
- not ate0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity decreased yield when irrigated at 6 and 9 dS m−1 but not at 3 dS m−1”
e1“kale grown under variable conditions”
Claim · model-written summary
Selenium addition increased kale yield at all salinity levels.
- Taxon
- kaleBrassica oleracea var. viridise1
- Treatment
- Selenium additione0
- Outcome
- yielde0
- Direction
- increasede0
- Qualifier
- at all salinity levelse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Selenium addition increased yield at all salinity levels”
e1“kale grown under variable conditions”
Claim · model-written summary
Selenium addition did not increase kale salt tolerance.
- Taxon
- kaleBrassica oleracea var. viridise1
- Treatment
- Selenium additione0
- Outcome
- salt tolerancee0
- Direction
- did not increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Selenium addition increased yield at all salinity levels but did not increase salt tolerance”
e1“kale grown under variable conditions”
Claim · model-written summary
Adding 0.25 mg Se per kg of soil increased kale yield by an average of 11% relative to control.
- Taxon
- kaleBrassica oleracea var. viridise1
- Treatment
- 0.25 mg Se per kg of soile0
- Outcome
- yielde0
- Direction
- increasee0
- Value
- 11%e0
- Qualifier
- leaf Se concentrations of 1 mg kg−1e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of 0.25 mg Se per kg of soil, corresponding to leaf Se concentrations of 1 mg kg−1, was sufficient to increase yield by an average of 11% relative to control”
e1“kale grown under variable conditions”
Claim · model-written summary
Kale yield loss began between 3 and 6 dS m−1 irrigation water salinity.
- Taxon
- KaleBrassica oleracea var. viridise0
- Outcome
- yield losse0
- Value
- between 3 and 6 dS m−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kale yield loss began between 3 and 6 dS m−1 irrigation water salinity”
Claim · model-written summary
Kale had 50% yield loss at EC 6.
- Taxon
- KaleBrassica oleracea var. viridise1
- Outcome
- yield losse0
- Value
- 50%e0
- Qualifier
- EC 6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“50% yield loss occurred at EC 6”
e1“Kale yield loss began”
The same questions in other papers
selenium atom · tolerance: abiotic · Brassica oleracea (wild cabbage)Positive and negative results
1 in the opposite direction
- positive
selenium atom · yield · Brassica oleracea (wild cabbage)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
1 paper more in this group
See all 5 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.