Abstract
A. deleoni is the commonest species of phytoseiidmites in citrus orchards in Guangdong and Sichuan. In laboratory experiments, A. deleoni was proved to be the most vigorous species among phytoseiids. An improved procedure for rearing A. deleoni was developed. The technique described is entirely by hand, but it provides a procedure whereby two technicians can rear enough adults to produce as many as 10,000 eggs per day.Pollen grains of Ricinus communis Linn, were used to breed the mites. They provided sufficient nutrients for the normal development and reproduction of the mites.Releases of laboratory-reared A. deleoni were made in commercial citrus orchards at Yangcun Citrus Farm for the control of the citrus red mite, Panonychus citri, in lieu of frequent acaricidal applications against the red mite. A total of 800,000 predacious mites were released on about 9,000 citrus trees to control the citrus red mite. Studies over several orchards indicated that mass releases of A. deleoni could effectively control infestations of the citrus red mites.Insecticides, particularly organophosphorous compounds, were shown to be extremely destructive to A. deleoni. The predacious mites were completely eliminated in the orchards which .were sprayed 1-2 times one month.Judicious use of selective chemicals and modified spray schedules designed to control the major pests of citrus with minimum effects on the phytoseiid mites are recommended.
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Claims 8
Claim · model-written summary
A. deleoni was the most common phytoseiid species in citrus orchards in Guangdong and Sichuan.
- Interactor
- A. deleonie0biocontrol_agent
- Outcome
- commonest species of phytoseiidmitese0
- Setting
- Guangdong and Sichuane0
CitrusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A. deleoni is the commonest species of phytoseiidmites in citrus orchards in Guangdong and Sichuan”
Claim · model-written summary
A. deleoni was the most vigorous phytoseiid species in laboratory experiments.
- Interactor
- A. deleonie0biocontrol_agent
- Outcome
- most vigorous species among phytoseiidse0
- Setting
- laboratory experimentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In laboratory experiments, A. deleoni was proved to be the most vigorous species among phytoseiids”
e1“A. deleoni is the commonest species of phytoseiidmites in citrus orchards in Guangdong and Sichuan”
Claim · model-written summary
The improved rearing method could produce up to 10,000 eggs per day with two technicians.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two technicians can rear enough adults to produce as many as 10,000 eggs per day”
e1“A. deleoni is the commonest species of phytoseiidmites in citrus orchards in Guangdong and Sichuan”
Claim · model-written summary
Ricinus communis pollen supplied nutrients for normal mite development and reproduction.
- Taxon
- Ricinus communis Linn
Ricinus communise0 - Organ / stage
- Pollen grainse0
- Interactor
- mitese0other
- Outcome
- normal development and reproduction of the mitese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pollen grains of Ricinus communis Linn, were used to breed the mites. They provided sufficient nutrients for the normal development and reproduction of the mites”
Claim · model-written summary
Mass releases of A. deleoni effectively controlled citrus red mite infestations.
- Treatment
- mass releases of A. deleonie0
- Interactor
- citrus red mitesPanonychus citrie0pest
- Second interactor
- A. deleonie0biocontrol_agent
- Outcome
- infestations of the citrus red mitese0
- Direction
- controle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mass releases of A. deleoni could effectively control infestations of the citrus red mites”
Claim · model-written summary
Insecticides were extremely destructive to A. deleoni.
- Treatment
- Insecticidese0
- Interactor
- A. deleonie0biocontrol_agent
- Outcome
- destructive to A. deleonie0
- Direction
- destructivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Insecticides, particularly organophosphorous compounds, were shown to be extremely destructive to A. deleoni”
e1“A. deleoni is the commonest species of phytoseiidmites in citrus orchards in Guangdong and Sichuan”
Claim · model-written summary
Predatory mites were eliminated from orchards sprayed one or two times in a month.
- Treatment
- sprayed 1-2 times one monthe0
- Interactor
- predacious mitese0biocontrol_agent
- Outcome
- predacious mitese0
- Direction
- completely eliminatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The predacious mites were completely eliminated in the orchards which .were sprayed 1-2 times one month”
e1“A. deleoni is the commonest species of phytoseiidmites in citrus orchards in Guangdong and Sichuan”
Claim · model-written summary
Selective chemicals and modified spray schedules are recommended to control citrus pests while minimizing effects on phytoseiid mites.
- Interactor
- major pests of citruse0pest
- Second interactor
- phytoseiid mitese0biocontrol_agent
- Outcome
- Judicious use of selective chemicals and modified spray schedulese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Judicious use of selective chemicals and modified spray schedules designed to control the major pests of citrus with minimum effects on the phytoseiid mites are recommended”
The same questions in other papers
application · pest · CitrusPositive and negative results
7 papers in the same direction as this paper · 11 in the opposite direction
- positive
- positive
- positive
15 papers more in this group
See all 19 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.