Abstract
Field experiments were conducted to evaluate the response of rainfed wheat (Triticum aestivum L.) to foliar copper (Cu) application in correcting Cu deficiency in calcareous soils. Two native soil Cu contents were tested in successive growing seasons. The soil “1” contained 0.35 mg kg−1 of Cu (Diethylenetriamine Pentaacetic Acid extraction). It was evaluated during the 2016-17 season. The soil “2” contained 0.61 mg kg−1. It was studied during the 2017-18 season. The rainfall amount was around 289 mm and 429 mm, respectively, for 2016-17 and 2017-18 seasons. For the soil “1”, the Cu treatments were: control, 0.2%, 0.4%, 0.6%, 0.8%, and 1%. For the soil “2”, the Cu tested levels were: control, 0.01%, 0.03%, 0.05%, 0.1%, and 0.2%. Cu was applied at the early boot growth stage in the sulfate form. The results showed that the response of grain yield to Cu foliar feeding was not related to the tested native soil Cu content. A significant grain yield increase, due to Cu spray, was revealed during the rainfall season (429 mm) in soil “2”. This increase was around 8% at 0.018% of Cu compared to control. However, Cu foliar application higher than 0.03% induced leaf damage. The Cu content of flag leaf and kernels showed a linear response to Cu supply. Flag leaf Cu content was around 5 mg kg−1 in control and exceeded 30 mg kg−1 at Cu application over than 0.03%.
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Claims 6
Claim · model-written summary
Yield response to foliar copper was unrelated to native soil copper content.
- Taxon
- wheat
Triticum aestivumt0 - Compound
- Cue0
- Outcome
- response of grain yielde0
- Qualifier
- not related to the tested native soil Cu contente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the response of grain yield to Cu foliar feeding was not related to the tested native soil Cu content”
t0“wheat (Triticum aestivum L.)”
Claim · model-written summary
Copper spray increased wheat grain yield significantly, by around 8% at 0.018% copper, during the 429 mm season in soil 2.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- 0.018% of Cue0
- Outcome
- grain yielde0
- Direction
- increasee0
- Value
- 8%e0
- Qualifier
- rainfall season (429 mm)e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant grain yield increase, due to Cu spray, was revealed during the rainfall season (429 mm) in soil “2”. This increase was around 8% at 0.018% of Cu compared to control.”
t0“wheat”
Claim · model-written summary
Copper foliar applications above 0.03% induced wheat leaf damage.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Cu foliar application higher than 0.03%e0
- Outcome
- leaf damagee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cu foliar application higher than 0.03% induced leaf damage.”
t0“wheat”
Claim · model-written summary
Flag leaf and kernel copper contents responded linearly to copper supply.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Cu supplye0
- Outcome
- Cu content of flag leaf and kernelse0
- Qualifier
- linear responsee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Cu content of flag leaf and kernels showed a linear response to Cu supply.”
t0“wheat”
Claim · model-written summary
Control wheat flag leaves contained around 5 mg kg−1 copper.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- Flag leaf Cu contente0
- Value
- 5 mg kg−1e0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flag leaf Cu content was around 5 mg kg−1 in control”
t0“wheat”
Claim · model-written summary
Flag leaf copper content exceeded 30 mg kg−1 with copper applications above 0.03%.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Cu application over than 0.03%e0
- Outcome
- Flag leaf Cu contente0
- Direction
- exceedede0
- Value
- 30 mg kg−1e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flag leaf Cu content was around 5 mg kg−1 in control and exceeded 30 mg kg−1 at Cu application over than 0.03%.”
t0“wheat”
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