Abstract
Bacterial blight disease of rice is major constraint in rice cultivation. This disease is influenced by prevailing weather conditions, rice physiology and nutrition. The experiment was carried out to assess the role of nitrogenous fertilizer on development of bacterial blight disease of rice and Xanthomonas oryzae pv. oryzae density in guttation fluid. Disease development increased with increase in nitrogen fertilizer, among four doses of nitrogen tested (control, 36, 54,72 kg urea/acre), disease severity was maximum in the plot supplied with highest dose of nitrogen i.e. 72 kg urea/acre at both seedling (19.3%) and tillering stage (32.4%) at 30 days after inoculation. The highest population density of X. oryzae pv. oryzae (6.02 log cfu/ml) was also recovered in guttation fluid collected from X.oryzaepv. oryzae inoculated plants at tillering stage, from the plots supplied with highest dose (72 kg urea/acre) of nitrogen.Scanning electron microscopic studies also revealed intense colonization by X. oryzae pv. oryzae in rice leaves supplied with high nitrogen dose.
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Claims 5
Claim · model-written summary
Bacterial blight development increased with nitrogen fertilizer dose in rice.
- Taxon
- rice
Oryza sativat0 - Treatment
- nitrogen fertilizere0
- Outcome
- Disease developmente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Disease development increased with increase in nitrogen fertilizer”
t0“rice”
Claim · model-written summary
At seedling stage, rice bacterial blight severity was maximal at 72 kg urea/acre and reached 19.3%.
- Taxon
- riceOryza sativat0
- Organ / stage
- seedlinge0
- Treatment
- 72 kg urea/acree0
- Outcome
- disease severitye0
- Direction
- maximume0
- Value
- 19.3%e0
- Qualifier
- 30 days after inoculatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“disease severity was maximum in the plot supplied with highest dose of nitrogen i.e. 72 kg urea/acre at both seedling (19.3%) and tillering stage (32.4%) at 30 days after inoculation.”
t0“rice”
Claim · model-written summary
At tillering stage, rice bacterial blight severity was maximal at 72 kg urea/acre and reached 32.4%.
- Taxon
- riceOryza sativat0
- Organ / stage
- tillering stagee0
- Treatment
- 72 kg urea/acree0
- Outcome
- disease severitye0
- Direction
- maximume0
- Value
- 32.4%e0
- Qualifier
- 30 days after inoculatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“disease severity was maximum in the plot supplied with highest dose of nitrogen i.e. 72 kg urea/acre at both seedling (19.3%) and tillering stage (32.4%) at 30 days after inoculation.”
t0“rice”
Claim · model-written summary
Pathogen density in rice guttation fluid was highest at tillering with the highest nitrogen dose, reaching 6.02 log cfu/ml.
- Taxon
- riceOryza sativat0
- Organ / stage
- tillering stagee0
- Treatment
- 72 kg urea/acree0
- Interactor
- X. oryzae pv. oryzae
Xanthomonas oryzae pv. oryzaee0pathogen - Outcome
- population density of X. oryzae pv. oryzaee0
- Direction
- higheste0
- Value
- 6.02 log cfu/mle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest population density of X. oryzae pv. oryzae (6.02 log cfu/ml) was also recovered in guttation fluid collected from X.oryzaepv. oryzae inoculated plants at tillering stage, from the plots supplied with highest dose (72 kg urea/acre) of nitrogen.”
t0“rice”
Claim · model-written summary
High nitrogen supplied rice leaves showed intense pathogen colonization.
- Taxon
- riceOryza sativae0
- Organ / stage
- leavese0
- Treatment
- high nitrogen dosee0
- Interactor
- X. oryzae pv. oryzaeXanthomonas oryzae pv. oryzaee0pathogen
- Outcome
- intense colonization by X. oryzae pv. oryzaee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“intense colonization by X. oryzae pv. oryzae in rice leaves supplied with high nitrogen dose.”
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