Abstract
The monitoring of rice pests and their predators in pesticide untreated and treated rice fields was conducted at the southern of Thailand. Twenty-two species in 15 families and 6 orders of rice pests were sampled from untreated rice field. For treated rice field, 22 species in 14 families and 5 orders of rice pest were collected. Regardless of treatment type, dominant species and individual number of rice pest varied to physiological stage of rice. Lepidopteran pests had highest infestation during the vegetative stage of rice growth, while hemipteran pests composed of hopper species (Hemipetra: Auchenorrhyncha) and heteropteran species (Hemiptera: Heteroptera) were dominant groups during the reproductive stage and grain formation and ripening stage of rice growth. In contrast, dominant species of predator did not change throughout rice growing season. There were 35 species in 25 families and seven orders and 40 species in 29 families and seven orders of predators collected from untreated and treated rice field, respectively. Major predators of both rice fields were Micraspis discolor (Fabricius) (Coleoptera: Coccinellidae), Tetragnatha sp. (Araneae: Tetragnathidae) and Agriocnemis pygmaea Rambur (Odonata: Agrionidae). The population dynamic of predators were not related with rice pest population in both treatments. However, the fluctuation of population pattern of rice pests in the untreated treatment were more distinctly synchronized with their predators than that of the treated treatment. There were no significant differences in the total number of rice pest and predator between two treatments at vegetative and reproductive stages of rice growth. Untreated rice field had a higher population number of predator and a lower population number of rice pest than that of treated rice field during grain formation and ripening stages. These results indicated the ago-ecosystem balance in rice fields could be produced through minimal pesticide application, in order to allow the natural balance between pests and their predators to be restored and maintained.
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Claims 14
Claim · model-written summary
Twenty-two species in 15 families and 6 orders of rice pests were sampled from untreated rice field.
- Taxon
- rice
Oryza sativae0 - Outcome
- rice pests were samplede0
- Value
- Twenty-two species in 15 families and 6 orderse0
- Setting
- untreated rice fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Twenty-two species in 15 families and 6 orders of rice pests were sampled from untreated rice field”
Claim · model-written summary
In the treated rice field, 22 species in 14 families and 5 orders of rice pests were collected.
- Taxon
- riceOryza sativae0
- Outcome
- rice pest were collectede0
- Value
- 22 species in 14 families and 5 orderse0
- Setting
- treated rice fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For treated rice field, 22 species in 14 families and 5 orders of rice pest were collected”
Claim · model-written summary
Lepidopteran pests had the highest infestation during the vegetative stage of rice growth.
- Taxon
- riceOryza sativae0
- Organ / stage
- vegetative stagee0
- Interactor
- Lepidopteran pestse0pest
- Outcome
- infestatione0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lepidopteran pests had highest infestation during the vegetative stage of rice growth”
Claim · model-written summary
Hemipteran pests (hopper species and heteropteran species) were the dominant groups during the reproductive and the grain formation and ripening stages of rice growth.
- Taxon
- riceOryza sativae0
- Organ / stage
- reproductive stage and grain formation and ripening stagee0
- Interactor
- hemipteran pestse0pest
- Outcome
- dominant groupse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemipteran pests composed of hopper species (Hemipetra: Auchenorrhyncha) and heteropteran species (Hemiptera: Heteroptera) were dominant groups during the reproductive stage and grain formation and ripening stage of rice growth”
Claim · model-written summary
The dominant predator species did not change throughout the rice growing season.
- Taxon
- riceOryza sativae0
- Interactor
- predatore0biocontrol_agent
- Outcome
- dominant species of predatore0
- Direction
- did not changee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dominant species of predator did not change throughout rice growing season”
Claim · model-written summary
In untreated rice fields, 35 species in 25 families and seven orders of predators were collected.
- Taxon
- riceOryza sativae0
- Interactor
- predatorse0biocontrol_agent
- Outcome
- predators collectede0
- Value
- 35 species in 25 families and seven orderse0
- Setting
- untreatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“35 species in 25 families and seven orders and 40 species in 29 families and seven orders of predators collected from untreated and treated rice field, respectively”
Claim · model-written summary
In treated rice fields, 40 species in 29 families and seven orders of predators were collected.
- Taxon
- riceOryza sativae0
- Interactor
- predatorse0biocontrol_agent
- Outcome
- predators collectede0
- Value
- 40 species in 29 families and seven orderse0
- Setting
- treated rice fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“35 species in 25 families and seven orders and 40 species in 29 families and seven orders of predators collected from untreated and treated rice field, respectively”
Claim · model-written summary
Major predators in both rice fields were Micraspis discolor, Tetragnatha sp. and Agriocnemis pygmaea.
- Taxon
- riceOryza sativae0
- Interactor
- Micraspis discolor (Fabricius)
Micraspis discolore0biocontrol_agent - Second interactor
- Tetragnatha sp.
.jpg?width=60)
Tetragnathae0biocontrol_agent - Outcome
- Major predatorse0
- Qualifier
- Agriocnemis pygmaea Rambure0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Major predators of both rice fields were Micraspis discolor (Fabricius) (Coleoptera: Coccinellidae), Tetragnatha sp. (Araneae: Tetragnathidae) and Agriocnemis pygmaea Rambur (Odonata: Agrionidae)”
Claim · model-written summary
Predator population dynamics were not related to rice pest population in either treatment.
- Taxon
- riceOryza sativae0
- Interactor
- rice peste0pest
- Outcome
- population dynamic of predatorse0
- Direction
- no_changeinferrede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The population dynamic of predators were not related with rice pest population in both treatments”
Claim · model-written summary
Population fluctuation of rice pests in the untreated treatment was more distinctly synchronized with their predators than in the treated treatment.
- Taxon
- riceOryza sativae0
- Treatment
- untreated treatmente0
- Interactor
- rice pestse0pest
- Second interactor
- predatorse0biocontrol_agent
- Outcome
- fluctuation of population pattern of rice pestse0
- Direction
- more distinctly synchronizede0
- Comparator
- treated treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the fluctuation of population pattern of rice pests in the untreated treatment were more distinctly synchronized with their predators than that of the treated treatment”
Claim · model-written summary
There were no significant differences in the total number of rice pests and predators between treated and untreated pesticide fields at the vegetative and reproductive stages.
- Taxon
- riceOryza sativat0
- Organ / stage
- vegetative and reproductive stagese0
- Treatment
- treated and untreated pesticidet0
- Outcome
- total number of rice pest and predatore0
- Direction
- no_changeinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“irrigated rice fields with treated and untreated pesticide”
e0“There were no significant differences in the total number of rice pest and predator between two treatments at vegetative and reproductive stages of rice growth”
Claim · model-written summary
Untreated rice field had a higher predator population number than treated rice field during grain formation and ripening stages.
- Taxon
- riceOryza sativae0
- Organ / stage
- grain formation and ripening stagese0
- Treatment
- Untreated rice fielde0
- Interactor
- predatore0biocontrol_agent
- Outcome
- population number of predatore0
- Direction
- highere0
- Comparator
- treated rice fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Untreated rice field had a higher population number of predator and a lower population number of rice pest than that of treated rice field during grain formation and ripening stages”
Claim · model-written summary
Untreated rice field had a lower rice pest population number than treated rice field during grain formation and ripening stages.
- Taxon
- riceOryza sativae0
- Organ / stage
- grain formation and ripening stagese0
- Treatment
- Untreated rice fielde0
- Interactor
- rice peste0pest
- Outcome
- population number of rice peste0
- Direction
- lowere0
- Comparator
- treated rice fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Untreated rice field had a higher population number of predator and a lower population number of rice pest than that of treated rice field during grain formation and ripening stages”
Claim · model-written summary
The authors conclude that agro-ecosystem balance in rice fields could be produced through minimal pesticide application.
- Taxon
- riceOryza sativae0
- Treatment
- minimal pesticide applicatione0
- Outcome
- ago-ecosystem balancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ago-ecosystem balance in rice fields could be produced through minimal pesticide application”
The same questions in other papers
insecticide · ecology: diversity · Oryza sativa (rice)Results agree
5 papers in the same direction as this paper
- no effect
- negative
- negative
2 papers more in this group
See all 6 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.