Abstract
Field experiments were conducted at Qalyubiya Governorate during two successive seasons 2009 and 2010 to study the population fluctuation of some sap-sucking pests, Bemisia tabaci (Genn), Thrips tabaci,Liriomyza trifolii (Burgess) and Tetranychus urtica Koch on Okra plants, and controlling them by using of Azadirachtin (Neemazal 5% EC), the natural oil (Clove oil, 5% EC), Plant extract Damaseia 1% DC and Vertimec 1.8% EC. Also the effect of these compounds and pests on chlorophyll of the leaves during the two successive seasons. The mean number of B. tabaci firstly occurred on May 11th and increased gradually to reach the peak at August 31st during 2009 season. While the infestation rates of T. tabaci, L. trifolii and T. urtica increased gradually and reached its peak in 14th, 3rd and 10th August in 2009 season, respectively. The weather factors (maximum, minimum, mean temperature) and plant age had significant positive effect on population of B. tabaci, T. tabaci, L. trifolii and T. urtica while the relative humidity had negative significant effect on population of B. tabaci, T. tabaci, L. trifolii and T. urticae during the two studied seasons 2009 and 2010. The percentage of explained variance of the four tested factors during the two seasons were 91.50; 94.60% for B. tabaci, 88.10; 89.90% in case of T. tabaci, 73.40; 69.20% on L. trifolii and 82.10 and 84.70% for T. urticae during the two seasons, respectively. The bioactivity of the four pesticides, the obtained results showed that Cloves oil, Damaseia and Neemazal seam to be closely similar in the order of mean reduction percentages of T. tabaci, L. trifolii and T. urticae (59.53, 59.33&60.30), (54.00, 55.90&55.10) and (76.20, 77.60&85.40, respectively) during the season 2009. On the other hand, Cloves oil caused 82.14 and 82.65 mortality of eggs and nymphal stages of whitefly followed by Damaseia (83.08&81.98) and Neemazal (75.50&73.30) during the two seasons. During 2009 season, the highest content of chlorophyll A in treated the okra leaves were obtained with using Cloves oil, Vertimec and Plant Extract Damaseia in which the leaves had significantly more chlorophyll content than in control. During 2010 seasons, the leaves sprayed with Cloves oil had the highest amount of chlorophyll content, while plants sprayed with Vertimec showed significantly lower chlorophyll content than in the control plants.
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Claims 15
Claim · model-written summary
Bemisia tabaci population peaked on August 31st in the 2009 season on okra.
- Taxon
- Okra
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Abelmoschus esculentuse0 - Interactor
- B. tabaci
Bemisia tabacie1pest - Outcome
- peake1
- Value
- August 31ste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“to study the population fluctuation of some sap-sucking pests, Bemisia tabaci (Genn), Thrips tabaci,Liriomyza trifolii (Burgess) and Tetranychus urtica Koch on Okra plants”
e1“The mean number of B. tabaci firstly occurred on May 11th and increased gradually to reach the peak at August 31st during 2009 season”
Claim · model-written summary
Thrips tabaci infestation peaked on 14 August in the 2009 season on okra.
- Taxon
- OkraAbelmoschus esculentuse0
- Interactor
- T. tabaci
Thrips tabacie2pest - Outcome
- infestation ratese2
- Value
- 14the2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the population fluctuation of some sap-sucking pests, Bemisia tabaci (Genn), Thrips tabaci,Liriomyza trifolii (Burgess) and Tetranychus urtica Koch on Okra plants”
e2“While the infestation rates of T. tabaci, L. trifolii and T. urtica increased gradually and reached its peak in 14th, 3rd and 10th August in 2009 season, respectively”
Claim · model-written summary
Liriomyza trifolii infestation peaked on 3 August in the 2009 season on okra.
- Taxon
- OkraAbelmoschus esculentuse0
- Interactor
- L. trifolii
Liriomyza trifoliie2pest - Outcome
- infestation ratese2
- Value
- 3rde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the population fluctuation of some sap-sucking pests, Bemisia tabaci (Genn), Thrips tabaci,Liriomyza trifolii (Burgess) and Tetranychus urtica Koch on Okra plants”
e2“While the infestation rates of T. tabaci, L. trifolii and T. urtica increased gradually and reached its peak in 14th, 3rd and 10th August in 2009 season, respectively”
Claim · model-written summary
Tetranychus urticae infestation peaked on 10 August in the 2009 season on okra.
- Taxon
- OkraAbelmoschus esculentuse0
- Interactor
- T. urticae2pest
- Outcome
- infestation ratese2
- Value
- 10the2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the population fluctuation of some sap-sucking pests, Bemisia tabaci (Genn), Thrips tabaci,Liriomyza trifolii (Burgess) and Tetranychus urtica Koch on Okra plants”
e2“While the infestation rates of T. tabaci, L. trifolii and T. urtica increased gradually and reached its peak in 14th, 3rd and 10th August in 2009 season, respectively”
Claim · model-written summary
Four tested factors explained 91.50 and 94.60 percent of variance in Bemisia tabaci populations across the two seasons.
- Taxon
- OkraAbelmoschus esculentuse0
- Treatment
- four tested factorse4
- Interactor
- B. tabaciBemisia tabacie4pest
- Outcome
- percentage of explained variancee4
- Value
- 91.50; 94.60%e4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the population fluctuation of some sap-sucking pests, Bemisia tabaci (Genn), Thrips tabaci,Liriomyza trifolii (Burgess) and Tetranychus urtica Koch on Okra plants”
e4“The percentage of explained variance of the four tested factors during the two seasons were 91.50; 94.60% for B. tabaci, 88.10; 89.90% in case of T. tabaci, 73.40; 69.20% on L. trifolii and 82.10 and 84.70% for T. urticae during the two seasons, respectively”
Claim · model-written summary
Four tested factors explained 88.10 and 89.90 percent of variance in Thrips tabaci populations across the two seasons.
- Taxon
- OkraAbelmoschus esculentuse0
- Treatment
- four tested factorse4
- Interactor
- T. tabaciThrips tabacie4pest
- Outcome
- percentage of explained variancee4
- Value
- 88.10; 89.90%e4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the population fluctuation of some sap-sucking pests, Bemisia tabaci (Genn), Thrips tabaci,Liriomyza trifolii (Burgess) and Tetranychus urtica Koch on Okra plants”
e4“The percentage of explained variance of the four tested factors during the two seasons were 91.50; 94.60% for B. tabaci, 88.10; 89.90% in case of T. tabaci, 73.40; 69.20% on L. trifolii and 82.10 and 84.70% for T. urticae during the two seasons, respectively”
Claim · model-written summary
Four tested factors explained 73.40 and 69.20 percent of variance in Liriomyza trifolii populations across the two seasons.
- Taxon
- OkraAbelmoschus esculentuse0
- Treatment
- four tested factorse4
- Interactor
- L. trifoliiLiriomyza trifoliie4pest
- Outcome
- percentage of explained variancee4
- Value
- 73.40; 69.20%e4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the population fluctuation of some sap-sucking pests, Bemisia tabaci (Genn), Thrips tabaci,Liriomyza trifolii (Burgess) and Tetranychus urtica Koch on Okra plants”
e4“The percentage of explained variance of the four tested factors during the two seasons were 91.50; 94.60% for B. tabaci, 88.10; 89.90% in case of T. tabaci, 73.40; 69.20% on L. trifolii and 82.10 and 84.70% for T. urticae during the two seasons, respectively”
Claim · model-written summary
Four tested factors explained 82.10 and 84.70 percent of variance in Tetranychus urticae populations across the two seasons.
- Taxon
- OkraAbelmoschus esculentuse0
- Treatment
- four tested factorse4
- Interactor
- T. urticaee4pest
- Outcome
- percentage of explained variancee4
- Value
- 82.10 and 84.70%e4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the population fluctuation of some sap-sucking pests, Bemisia tabaci (Genn), Thrips tabaci,Liriomyza trifolii (Burgess) and Tetranychus urtica Koch on Okra plants”
e4“The percentage of explained variance of the four tested factors during the two seasons were 91.50; 94.60% for B. tabaci, 88.10; 89.90% in case of T. tabaci, 73.40; 69.20% on L. trifolii and 82.10 and 84.70% for T. urticae during the two seasons, respectively”
Claim · model-written summary
Cloves oil, Damaseia and Neemazal gave similar mean reduction percentages of Thrips tabaci on okra in 2009.
- Taxon
- OkraAbelmoschus esculentuse0
- Treatment
- Cloves oil, Damaseia and Neemazale5
- Interactor
- T. tabaciThrips tabacie5pest
- Outcome
- mean reduction percentagese5
- Direction
- reductione5
- Value
- 59.53, 59.33&60.30e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the population fluctuation of some sap-sucking pests, Bemisia tabaci (Genn), Thrips tabaci,Liriomyza trifolii (Burgess) and Tetranychus urtica Koch on Okra plants”
e5“Cloves oil, Damaseia and Neemazal seam to be closely similar in the order of mean reduction percentages of T. tabaci, L. trifolii and T. urticae (59.53, 59.33&60.30), (54.00, 55.90&55.10) and (76.20, 77.60&85.40, respectively) during the season 2009”
Claim · model-written summary
Cloves oil, Damaseia and Neemazal gave similar mean reduction percentages of Liriomyza trifolii on okra in 2009.
- Taxon
- OkraAbelmoschus esculentuse0
- Treatment
- Cloves oil, Damaseia and Neemazale5
- Interactor
- L. trifoliiLiriomyza trifoliie5pest
- Outcome
- mean reduction percentagese5
- Direction
- reductione5
- Value
- 54.00, 55.90&55.10e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the population fluctuation of some sap-sucking pests, Bemisia tabaci (Genn), Thrips tabaci,Liriomyza trifolii (Burgess) and Tetranychus urtica Koch on Okra plants”
e5“Cloves oil, Damaseia and Neemazal seam to be closely similar in the order of mean reduction percentages of T. tabaci, L. trifolii and T. urticae (59.53, 59.33&60.30), (54.00, 55.90&55.10) and (76.20, 77.60&85.40, respectively) during the season 2009”
Claim · model-written summary
Cloves oil, Damaseia and Neemazal gave similar mean reduction percentages of Tetranychus urticae on okra in 2009.
- Taxon
- OkraAbelmoschus esculentuse0
- Treatment
- Cloves oil, Damaseia and Neemazale5
- Interactor
- T. urticaee5pest
- Outcome
- mean reduction percentagese5
- Direction
- reductione5
- Value
- 76.20, 77.60&85.40e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the population fluctuation of some sap-sucking pests, Bemisia tabaci (Genn), Thrips tabaci,Liriomyza trifolii (Burgess) and Tetranychus urtica Koch on Okra plants”
e5“Cloves oil, Damaseia and Neemazal seam to be closely similar in the order of mean reduction percentages of T. tabaci, L. trifolii and T. urticae (59.53, 59.33&60.30), (54.00, 55.90&55.10) and (76.20, 77.60&85.40, respectively) during the season 2009”
Claim · model-written summary
Cloves oil caused 82.14 and 82.65 percent mortality of whitefly eggs and nymphal stages.
- Taxon
- OkraAbelmoschus esculentuse0
- Treatment
- Cloves oile6
- Interactor
- whiteflye6pest
- Outcome
- mortality of eggs and nymphal stages of whiteflye6
- Direction
- increaseinferrede6
- Value
- 82.14 and 82.65e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the population fluctuation of some sap-sucking pests, Bemisia tabaci (Genn), Thrips tabaci,Liriomyza trifolii (Burgess) and Tetranychus urtica Koch on Okra plants”
e6“Cloves oil caused 82.14 and 82.65 mortality of eggs and nymphal stages of whitefly followed by Damaseia (83.08&81.98) and Neemazal (75.50&73.30) during the two seasons”
Claim · model-written summary
Cloves oil, Vertimec and Damaseia significantly increased chlorophyll content of okra leaves compared with control in 2009.
- Taxon
- OkraAbelmoschus esculentuse0
- Organ / stage
- leavese7
- Treatment
- Cloves oil, Vertimec and Plant Extract Damaseiae7
- Outcome
- chlorophyll contente7
- Direction
- moree7
- Comparator
- controle7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the population fluctuation of some sap-sucking pests, Bemisia tabaci (Genn), Thrips tabaci,Liriomyza trifolii (Burgess) and Tetranychus urtica Koch on Okra plants”
e7“the highest content of chlorophyll A in treated the okra leaves were obtained with using Cloves oil, Vertimec and Plant Extract Damaseia in which the leaves had significantly more chlorophyll content than in control”
Claim · model-written summary
Cloves oil gave the highest chlorophyll content of okra leaves in 2010.
- Taxon
- OkraAbelmoschus esculentuse0
- Treatment
- Cloves oile7
- Outcome
- chlorophyll contente7
- Direction
- higheste7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the population fluctuation of some sap-sucking pests, Bemisia tabaci (Genn), Thrips tabaci,Liriomyza trifolii (Burgess) and Tetranychus urtica Koch on Okra plants”
e7“the leaves sprayed with Cloves oil had the highest amount of chlorophyll content, while plants sprayed with Vertimec showed significantly lower chlorophyll content than in the control plants”
Claim · model-written summary
Vertimec significantly lowered chlorophyll content of okra leaves compared with control plants in 2010.
- Taxon
- OkraAbelmoschus esculentuse0
- Treatment
- Vertimece7
- Outcome
- chlorophyll contente7
- Direction
- lowere7
- Comparator
- control plantse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the population fluctuation of some sap-sucking pests, Bemisia tabaci (Genn), Thrips tabaci,Liriomyza trifolii (Burgess) and Tetranychus urtica Koch on Okra plants”
e7“the leaves sprayed with Cloves oil had the highest amount of chlorophyll content, while plants sprayed with Vertimec showed significantly lower chlorophyll content than in the control plants”
The same questions in other papers
botanical · physiology: pigments · Abelmoschus esculentus (okra)Results agree
2 papers in the same direction as this paper
- positive
- 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.