Abstract
To study the effect of salicylic acid concentrations and foliar application times on yield and yield components of maize in the northern Khuzestan, a field experiment in 2014-2015, as factorial in the form of randomized complete block design with three replications was conducted. Experimental factors were salicylic acid concentration in five levels, 0, 0.25, 0.5, 0.75 1 Mm and foliar application times with three levels: once at 6-8 leaf stage, twice at 6-8 leaf stage and ten days after that, thrice at 6-8 leaf stage and twenty days after that. Results showed that the leaf area index, grain yield and yield components, like grain thousand weight, number of kernel rows per ear and number of kernels per row, were affected significantly by different salicylic acid concentrations and foliar application times, but the effect of salicylic acid concentration ×foliar application time interactions were not significant. Biologic yield was affected by different concentration of salicylic acid. The highest biologic yield of 18150 kg/ha related to 0.75 Mm salicylic acid concentration and lowest to control (no foliar application) with 15140 kg.ha-1, but the effect of foliar application times and their interactions were not significant. Foliar application of salicylic acid increased grain yield. The highest grain yield of 8998 kg.ha-1 related to 1 Mm concentration treatment and lowest (6897 kg.ha-1) to control (no foliar application). Highest grain yield (8592 kg.ha-1) belonged to two time foliar applications, at 6-8 leaf stage and ten days after that. The conclusion is that the application of salicylic acid could be beneficial in increasing grain yield of maize.
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Claims 8
Claim · model-written summary
Salicylic acid concentration and foliar application time significantly affected leaf area index, grain yield, grain thousand weight, kernel rows per ear, and kernels per row.
- Treatment
- salicylic acid concentrations and foliar application timese0
- Outcome
- leaf area index, grain yield and yield componentse0
Zea maysNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“leaf area index, grain yield and yield components, like grain thousand weight, number of kernel rows per ear and number of kernels per row, were affected significantly by different salicylic acid concentrations and foliar application times”
Claim · model-written summary
The concentration-by-application-time interaction was not significant for leaf area index and yield components.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“the effect of salicylic acid concentration ×foliar application time interactions were not significant”
Claim · model-written summary
Salicylic acid concentration affected biologic yield.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“Biologic yield was affected by different concentration of salicylic acid”
Claim · model-written summary
Biologic yield was highest at 0.75 Mm salicylic acid, reaching 18150 kg/ha.
- Treatment
- 0.75 Mm salicylic acid concentratione0
- Outcome
- biologic yielde0
- Direction
- higheste0
- Value
- 18150 kg/hae0
- Qualifier
- 15140 kg.ha-1e0
- Comparator
- control (no foliar application)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“The highest biologic yield of 18150 kg/ha related to 0.75 Mm salicylic acid concentration and lowest to control (no foliar application) with 15140 kg.ha-1”
Claim · model-written summary
Application time and its interaction with dose did not significantly affect biologic yield.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“the effect of foliar application times and their interactions were not significant”
Claim · model-written summary
Foliar salicylic acid increased grain yield; the highest value was 8998 kg.ha-1 at 1 Mm versus 6897 kg.ha-1 in untreated controls.
- Treatment
- 1 Mm concentration treatmente0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 8998 kg.ha-1e0
- Qualifier
- 6897 kg.ha-1e0
- Comparator
- control (no foliar application)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“Foliar application of salicylic acid increased grain yield. The highest grain yield of 8998 kg.ha-1 related to 1 Mm concentration treatment and lowest (6897 kg.ha-1) to control (no foliar application)”
Claim · model-written summary
Two salicylic acid applications produced the highest grain yield among application times, 8592 kg.ha-1.
- Treatment
- two time foliar applications, at 6-8 leaf stage and ten days after thate0
- Outcome
- grain yielde0
- Direction
- Higheste0
- Value
- 8592 kg.ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“Highest grain yield (8592 kg.ha-1) belonged to two time foliar applications, at 6-8 leaf stage and ten days after that”
Claim · model-written summary
The authors conclude that salicylic acid application could benefit maize grain yield.
- Outcome
- application of salicylic acid could be beneficial in increasing grain yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of salicylic acid could be beneficial in increasing grain yield of maize”
The same questions in other papers
salicylic acid · yield · Zea mays (maize)Results differ
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- no effect
- no effect
- positive
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574 papers in the same direction as this paper · 42 in the opposite direction · 12 reporting no difference from an alternative
- no effect
- no effect
- negative
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See all 629 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.