Abstract
The influence of K2O (0, 40, 80, 120 kg ha-1) at varying rates of N application (0, 30, 60 kg ha-1) at planting, on panicle blast (Pyricularia grisea (Cooke) Sacc.) was studied in a field experiment conducted during three consecutive years with the upland rice cultivar Douradão. Panicle blast severity decreased with increasing rates of potassium in the absence of nitrogen (N0). The relationship between panicle blast and K rates was quadratic at 30 kg ha-1 of nitrogen. Significant response to K fertilization was not obtained at 60 kg ha-1 of nitrogen in relation to panicle blast severity.
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Claims 3
Claim · model-written summary
Panicle blast severity decreased as potassium rates increased without nitrogen.
- Taxon
- upland rice
Oryza sativat0 - Treatment
- increasing rates of potassiume0
- Interactor
- Pyricularia grisea
Pyricularia griseae1pathogen - Outcome
- Panicle blast severitye0
- Direction
- decreasede0
- Comparator
- absence of nitrogen (N0)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Panicle blast severity decreased with increasing rates of potassium in the absence of nitrogen (N0)”
e1“panicle blast (Pyricularia grisea (Cooke) Sacc.)”
t0“upland rice”
Claim · model-written summary
At 30 kg ha-1 nitrogen, panicle blast had a quadratic relationship with potassium rate.
- Taxon
- upland riceOryza sativat0
- Treatment
- K ratese0
- Outcome
- panicle blaste0
- Qualifier
- 30 kg ha-1 of nitrogene0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relationship between panicle blast and K rates was quadratic at 30 kg ha-1 of nitrogen”
t0“upland rice”
Claim · model-written summary
At 60 kg ha-1 nitrogen, potassium fertilization had no significant response for panicle blast severity.
- Taxon
- upland riceOryza sativat0
- Treatment
- K fertilizatione0
- Outcome
- panicle blast severitye0
- Qualifier
- 60 kg ha-1 of nitrogene0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant response to K fertilization was not obtained at 60 kg ha-1 of nitrogen in relation to panicle blast severity”
t0“upland rice”
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fertilization · disease · Oryza sativa (rice)Positive and negative results
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