Abstract
A single foliar spray of 0‐1 M phosphate salts solution was applied to the upper side of maize (cv. Jubilee) leaves 1,2 and 3 at the five‐to six‐leaf stage, 2‐4 h before inoculation with Puccinia sorghi. This treatment induced systemic resistance against common rust as expressed by 98% reduction in the number of pustules of P. sorghi developed on leaves 5, 6 and 7, There was no damage or chlorotic stippling on the induced leaves (1, 2 and 3) as a result of the phosphate spray, A less effective, but still significant. reduction (90%) in the number of pustules was obtained when the foliar spray was applied 6 days before inoculation. One foliar spray of K 2 HPO 4 on leaves 1,2 and 3,6 days before inoculation, stimulated plant growth regardless of inoculation. The foliar spray on the day of inoculation was less effective in stimulating growth. Appropriate mixtures of phosphate solutions revealed that the level of protection was not necessarily dependent on the gradual changes in the pH of the solution. The possible dual use of phosphate salts as foliar fertilizers and as agents for induced resistance is discussed.
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Claims 6
Claim · model-written summary
A single foliar spray of phosphate salts solution on maize leaves 1-3 induced systemic resistance, with a 98% reduction in pustules of P. sorghi on leaves 5, 6 and 7.
- Organ / stage
- leaves 5, 6 and 7e1
- Treatment
- single foliar spray of 0‐1 M phosphate salts solutione0
- Interactor
- P. sorghi
Puccinia sorghie1pathogen - Outcome
- number of pustules of P. sorghie1
- Direction
- reductione1
- Value
- 98%e1
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Foliar spray of phosphates induces growth increase and systemic resistance to Puccinia sorghi in maize”
e0“A single foliar spray of 0‐1 M phosphate salts solution was applied to the upper side of maize (cv. Jubilee) leaves 1,2 and 3”
e1“This treatment induced systemic resistance against common rust as expressed by 98% reduction in the number of pustules of P. sorghi developed on leaves 5, 6 and 7”
Claim · model-written summary
A foliar spray applied 6 days before inoculation gave a less effective but still significant 90% reduction in pustules of P. sorghi.
- Treatment
- foliar spray was applied 6 days before inoculatione2
- Interactor
- Puccinia sorghiPuccinia sorghit0pathogen
- Outcome
- number of pustulese2
- Direction
- reductione2
- Value
- 90%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Foliar spray of phosphates induces growth increase and systemic resistance to Puccinia sorghi in maize”
e2“A less effective, but still significant. reduction (90%) in the number of pustules was obtained when the foliar spray was applied 6 days before inoculation”
Claim · model-written summary
Phosphate spray on maize leaves 1-3 caused no damage or chlorotic stippling on those induced leaves.
- Organ / stage
- induced leaves (1, 2 and 3)e3
- Treatment
- phosphate spraye3
- Outcome
- damage or chlorotic stipplinge3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Foliar spray of phosphates induces growth increase and systemic resistance to Puccinia sorghi in maize”
e3“There was no damage or chlorotic stippling on the induced leaves (1, 2 and 3) as a result of the phosphate spray”
Claim · model-written summary
One foliar spray of K2HPO4 on maize leaves 1-3, 6 days before inoculation, stimulated plant growth regardless of inoculation.
- Treatment
- One foliar spray of K 2 HPO 4e4
- Outcome
- plant growthe4
- Direction
- stimulatede4
- Qualifier
- regardless of inoculatione4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Foliar spray of phosphates induces growth increase and systemic resistance to Puccinia sorghi in maize”
e4“One foliar spray of K 2 HPO 4 on leaves 1,2 and 3,6 days before inoculation, stimulated plant growth regardless of inoculation”
Claim · model-written summary
A foliar spray on the day of inoculation was less effective than the earlier spray in stimulating maize growth.
- Treatment
- foliar spray on the day of inoculatione5
- Outcome
- stimulating growthe5
- Direction
- less effectivee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Foliar spray of phosphates induces growth increase and systemic resistance to Puccinia sorghi in maize”
e5“The foliar spray on the day of inoculation was less effective in stimulating growth”
Claim · model-written summary
The level of protection by mixtures of phosphate solutions was not necessarily dependent on the gradual changes in solution pH.
- Treatment
- mixtures of phosphate solutionse6
- Outcome
- level of protectione6
- Direction
- no_changeinferrede6
- Qualifier
- not necessarily dependent on the gradual changes in the pH of the solutione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Foliar spray of phosphates induces growth increase and systemic resistance to Puccinia sorghi in maize”
e6“Appropriate mixtures of phosphate solutions revealed that the level of protection was not necessarily dependent on the gradual changes in the pH of the solution”
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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.