Abstract
A field experiment was conducted in two successive years at Goiânia, GO, Brazil, to study the effect of seed treatment with pyroquilon fungicide (4.0 g a.i. per kg of seed) on rice blast in cultivars that differed in their level of resistance. Leaf and panicle blast progress was monitored in the newly released, early maturing upland rice cultivar Guarani and the advanced line CNA 4136, and compared with disease progress in the susceptible commercial cultivars IAC 165 and IAC 25 in plots with treated and untreated seed. Seed treatment suppressed leaf blast until 62 and 47 days after seeding in 1987 and 1988, respectively, when averaged across cultivars. The slow blasting nature of Guarani and CNA 4136 increased the level of disease control when environmental conditions favored blast development in 1988. Under high disease pressure the correlation between leaf blast and panicle blast severity in the field plots was negative (r = -0.5, P = 0.01). Leaf blast severity at 47 days after seeding was negatively correlated to grain yield (r = -0.709, P = 0.001). Guarani exhibited an increase in grain yield over the untreated control of 28%, corresponding to 826 kg/ha.
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Claims 7
Claim · model-written summary
Pyroquilon seed treatment suppressed leaf blast until day 62 in 1987, averaged across cultivars.
- Taxon
- rice
Oryza sativae1 - Treatment
- seed treatment with pyroquilon fungicide (4.0 g a.i. per kg of seed)e1
- Outcome
- leaf blaste0
- Direction
- suppressede0
- Value
- 62e0
- Qualifier
- in 1987e0
- Comparator
- untreated seede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed treatment suppressed leaf blast until 62 and 47 days after seeding in 1987 and 1988, respectively, when averaged across cultivars.”
e1“seed treatment with pyroquilon fungicide (4.0 g a.i. per kg of seed) on rice blast”
e2“treated and untreated seed”
Claim · model-written summary
Pyroquilon seed treatment suppressed leaf blast until day 47 in 1988, averaged across cultivars.
- Taxon
- riceOryza sativae1
- Treatment
- seed treatment with pyroquilon fungicide (4.0 g a.i. per kg of seed)e1
- Outcome
- leaf blaste0
- Direction
- suppressede0
- Value
- 47 days after seedinge0
- Qualifier
- 1988e0
- Comparator
- untreated seede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed treatment suppressed leaf blast until 62 and 47 days after seeding in 1987 and 1988, respectively, when averaged across cultivars.”
e1“seed treatment with pyroquilon fungicide (4.0 g a.i. per kg of seed) on rice blast”
e2“treated and untreated seed”
Claim · model-written summary
Guarani slow blasting increased disease control when conditions favored blast in 1988.
- Taxon
- riceOryza sativae1
- Material
- Guaranie0
- Outcome
- level of disease controle0
- Direction
- increasede0
- Qualifier
- when environmental conditions favored blast development in 1988e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The slow blasting nature of Guarani and CNA 4136 increased the level of disease control when environmental conditions favored blast development in 1988.”
e1“upland rice cultivar Guarani”
Claim · model-written summary
CNA 4136 slow blasting increased disease control when conditions favored blast in 1988.
- Taxon
- riceOryza sativae1
- Material
- CNA 4136e0
- Outcome
- level of disease controle0
- Direction
- increasede0
- Qualifier
- when environmental conditions favored blast development in 1988e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The slow blasting nature of Guarani and CNA 4136 increased the level of disease control when environmental conditions favored blast development in 1988.”
e1“upland rice cultivar Guarani”
Claim · model-written summary
Under high disease pressure, leaf and panicle blast severity were negatively correlated.
- Taxon
- riceOryza sativae1
- Outcome
- panicle blast severitye0
- Direction
- negativee0
- Value
- r = -0.5e0
- Qualifier
- Under high disease pressuree0
- Comparator
- leaf blaste0
- Setting
- field plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under high disease pressure the correlation between leaf blast and panicle blast severity in the field plots was negative (r = -0.5, P = 0.01).”
e1“upland rice cultivar Guarani”
Claim · model-written summary
Leaf blast severity at day 47 was negatively correlated with grain yield.
- Taxon
- riceOryza sativae1
- Outcome
- grain yielde0
- Direction
- negatively correlatede0
- Value
- r = -0.709e0
- Qualifier
- at 47 days after seedinge0
- Comparator
- Leaf blast severitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf blast severity at 47 days after seeding was negatively correlated to grain yield (r = -0.709, P = 0.001).”
e1“upland rice cultivar Guarani”
Claim · model-written summary
Guarani grain yield rose 28% over untreated control, equivalent to 826 kg/ha.
- Taxon
- riceOryza sativae1
- Material
- Guaranie0
- Treatment
- Guaranie0
- Outcome
- grain yielde0
- Direction
- increasee0
- Value
- 28%e0
- Qualifier
- 826 kg/hae0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Guarani exhibited an increase in grain yield over the untreated control of 28%, corresponding to 826 kg/ha.”
e1“upland rice cultivar Guarani”
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See all 69 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.