Abstract
Effects of flooding on physical,chemical and biological properties of soil and on disease control of Phytophthora blight of chilli pepper were studied with soil treatment and pot experiment in two kinds of soil coming from greenhouse.The results showed that pH value and phenolic acid content of soil were increased slightly while the organic acid concentration was increased significantly after flooding.However,EC,Eh and ammonium nitrogen content decreased significantly.After transplantation of chilli pepper,different parameters of rhizosphere soil of chilli pepper showed different change trend.Organic acid and phenolic acid content decreased rapidly and ammonium nitrogen content and Eh increased gradually,but EC and pH were stable.As to biological character of soil,flooding reduced activity of dehydrogenase and urease,so did the number of fungi and actinomycetes.The soil inoculated with zoospores of Phytophthora capsici at density of 1 000 zoospores per gram dry soil were respectively kept wet and waterlogged for 35 days.The density of P.capsis in wet groupwas 5~6 times of waterlogged group when the soil treatments were finished.The number of in soil of wet group increased significantly after transplanting of chilli pepper,but the P.capsici population in waterlogged group remained unchanged.The study also showed that flooding for 20 days and 35 days respectively received 100% control effect against pepper blight in two soils collected from two greenhouse,and 40%~100% control effect was obtained in two soils inoculated with P.capsici at density of 1 000 zoospores per gram dry soil with corresponding flooding time.Therefore,the authors speculated that flooding solely was not suitable for soil where soil-borne disease was serious and other measures for soil treatments should be integrated to achieve satisfying effect in disease control.
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Claims 20
Claim · model-written summary
Flooding changed soil pH value (increased slightly).
Verbatim
t0“Chilli Pepper”
e0“pH value and phenolic acid content of soil were increased slightly while the organic acid concentration was increased significantly after flooding”
e1“after flooding”
Claim · model-written summary
Flooding changed soil phenolic acid content of soil (increased slightly).
Verbatim
t0“Chilli Pepper”
e0“pH value and phenolic acid content of soil were increased slightly while the organic acid concentration was increased significantly after flooding”
e1“after flooding”
Claim · model-written summary
Flooding changed soil organic acid concentration (increased significantly).
Verbatim
t0“Chilli Pepper”
e0“pH value and phenolic acid content of soil were increased slightly while the organic acid concentration was increased significantly after flooding”
e1“after flooding”
Claim · model-written summary
Flooding changed soil EC (decreased significantly).
Verbatim
t0“Chilli Pepper”
e0“EC,Eh and ammonium nitrogen content decreased significantly”
e1“after flooding”
Claim · model-written summary
Flooding changed soil Eh (decreased significantly).
Verbatim
t0“Chilli Pepper”
e0“EC,Eh and ammonium nitrogen content decreased significantly”
e1“after flooding”
Claim · model-written summary
Flooding changed soil ammonium nitrogen content (decreased significantly).
Verbatim
t0“Chilli Pepper”
e0“EC,Eh and ammonium nitrogen content decreased significantly”
e1“after flooding”
Claim · model-written summary
After transplanting, rhizosphere Organic acid was decreased rapidly.
Verbatim
t0“Chilli Pepper”
e0“Organic acid and phenolic acid content decreased rapidly and ammonium nitrogen content and Eh increased gradually,but EC and pH were stable”
Claim · model-written summary
After transplanting, rhizosphere phenolic acid content was decreased rapidly.
Verbatim
t0“Chilli Pepper”
e0“Organic acid and phenolic acid content decreased rapidly and ammonium nitrogen content and Eh increased gradually,but EC and pH were stable”
Claim · model-written summary
After transplanting, rhizosphere ammonium nitrogen content was increased gradually.
Verbatim
t0“Chilli Pepper”
e0“Organic acid and phenolic acid content decreased rapidly and ammonium nitrogen content and Eh increased gradually,but EC and pH were stable”
Claim · model-written summary
After transplanting, rhizosphere Eh was increased gradually.
Verbatim
t0“Chilli Pepper”
e0“Organic acid and phenolic acid content decreased rapidly and ammonium nitrogen content and Eh increased gradually,but EC and pH were stable”
Claim · model-written summary
After transplanting, rhizosphere EC was stable.
Verbatim
t0“Chilli Pepper”
e0“Organic acid and phenolic acid content decreased rapidly and ammonium nitrogen content and Eh increased gradually,but EC and pH were stable”
Claim · model-written summary
After transplanting, rhizosphere pH was stable.
Verbatim
t0“Chilli Pepper”
e0“Organic acid and phenolic acid content decreased rapidly and ammonium nitrogen content and Eh increased gradually,but EC and pH were stable”
Claim · model-written summary
Flooding reduced soil activity of dehydrogenase.
Verbatim
t0“Chilli Pepper”
e0“flooding reduced activity of dehydrogenase and urease,so did the number of fungi and actinomycetes”
Claim · model-written summary
Flooding reduced soil urease.
Verbatim
t0“Chilli Pepper”
e0“flooding reduced activity of dehydrogenase and urease,so did the number of fungi and actinomycetes”
Claim · model-written summary
Flooding reduced soil number of fungi.
Verbatim
t0“Chilli Pepper”
e0“flooding reduced activity of dehydrogenase and urease,so did the number of fungi and actinomycetes”
Claim · model-written summary
Flooding reduced soil actinomycetes.
Verbatim
t0“Chilli Pepper”
e0“flooding reduced activity of dehydrogenase and urease,so did the number of fungi and actinomycetes”
Claim · model-written summary
The wet group had 5 to 6 times the pathogen density of the waterlogged group.
Verbatim
t0“Chilli Pepper”
e0“The density of P.capsis in wet groupwas 5~6 times of waterlogged group when the soil treatments were finished”
Claim · model-written summary
The pathogen population remained unchanged in waterlogged soil after pepper transplanting.
- Taxon
- Chilli Peppert0
- Interactor
- P.capsici
.jpg?width=60)
Phytophthora capsicie0pathogen - Outcome
- P.capsici populatione0
- Direction
- remained unchangede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Chilli Pepper”
e0“The number of in soil of wet group increased significantly after transplanting of chilli pepper,but the P.capsici population in waterlogged group remained unchanged”
Claim · model-written summary
Flooding for 20 and 35 days achieved 100% control of pepper blight in two greenhouse soils.
- Taxon
- Chilli Peppert0
- Treatment
- flooding for 20 days and 35 dayse0
- Outcome
- control effect against pepper blighte0
- Direction
- control effecte0
- Value
- 100%e0
Not reportedComparator
Verbatim
t0“Chilli Pepper”
e0“flooding for 20 days and 35 days respectively received 100% control effect against pepper blight in two soils collected from two greenhouse,and 40%~100% control effect was obtained in two soils inoculated with P.capsici at density of 1 000 zoospores per gram dry soil with corresponding flooding time”
Claim · model-written summary
Flooding gave 40%~100% control in pathogen-inoculated soils.
- Taxon
- Chilli Peppert0
- Treatment
- floodinge0
- Interactor
- P.capsiciPhytophthora capsicie0pathogen
- Outcome
- control effecte0
- Direction
- control effecte0
- Value
- 40%~100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chilli Pepper”
e0“flooding for 20 days and 35 days respectively received 100% control effect against pepper blight in two soils collected from two greenhouse,and 40%~100% control effect was obtained in two soils inoculated with P.capsici at density of 1 000 zoospores per gram dry soil with corresponding flooding time”
The same questions in other papers
flooding · disease · Capsicum (peppers)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
flooding · Phytophthora capsici · Capsicum (peppers)Results agree
1 paper in the same direction as this paper
- positive
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.