Abstract
The present study was conducted to investigate the comparative efficacy of neem leaf extracts and lambdacyhalothrin against whitefly and jassid in okra field. Four okra cultivars (SABZ PARI, SADA BAHAR, PUS A SAWANI, ARKA and ANAMIKA) were grown in field with four replication. Five neem oil concentrations (1, 2, 3, 4 and 5 percent) and a synthetic insecticide (Lambdacyhalothrin 2.5EC) @ 330 mL acre−1 were applied to evaluate efficacy effects on targeted insects population. Distilled water was used as control. The plots treated with synthetic insecticide and the leaf extracts against targeted pests had significantly (P > 0.05) suppressed insect population as compared to control. After 1st spray, no significant (P > 0.05) reduction in pest populations were observed after 24 hours. However, significant (P < 0.05) reduction in population was recorded after 48 and 72 hours respectively. The decline in efficacy of insecticides were recorded after 360 hours of spray. Lambdacyhalothrin and neem oil @ 4 and 5% concentration were equally effective against whitefly and jassid feeding on okra plants. The efficacious effect of neem oil and synthetic insecticide on plant height, number of pods/plant and yield were also studied. Furthermore, tested treatments had no significant effect on plant height and yield parameter (number of fruits pods plant−1). Whereas, tested treatments of neem oil @ 4 and 5% and lambdacyhalothrin had induce significantly (P > 0.05) impact on yield parameter (yield). We conclude that Lambdacyhalothrin and neem oil @ 4 and 5% concentration are equally effective in controlling jassid and have same impact on yield of okra plant.
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Claims 7
Claim · model-written summary
Plots treated with synthetic insecticide and neem leaf extracts had a significantly suppressed insect pest population compared with the control in okra.
- Taxon
- okra
.jpg?width=60)
Abelmoschus esculentust0 - Treatment
- synthetic insecticide and the leaf extractse0
- Interactor
- targeted pestse0pest
- Outcome
- insect populatione0
- Direction
- suppressede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The plots treated with synthetic insecticide and the leaf extracts against targeted pests had significantly (P > 0.05) suppressed insect population as compared to control”
t0“okra”
Claim · model-written summary
After the first spray, no significant reduction in pest populations was observed after 24 hours.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- 1st spraye0
- Interactor
- peste0pest
- Outcome
- pest populationse0
- Direction
- no significant (P > 0.05) reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 1st spray, no significant (P > 0.05) reduction in pest populations were observed after 24 hours”
t0“okra”
Claim · model-written summary
A significant reduction in pest population was recorded after 48 and 72 hours of spray.
- Taxon
- okraAbelmoschus esculentust0
- Outcome
- populatione0
- Direction
- reductione0
- Qualifier
- after 48 and 72 hourse0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant (P < 0.05) reduction in population was recorded after 48 and 72 hours respectively”
t0“okra”
Claim · model-written summary
A decline in efficacy of the insecticides was recorded 360 hours after spray.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- insecticidese0
- Outcome
- efficacy of insecticidese0
- Direction
- declinee0
- Qualifier
- after 360 hours of spraye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The decline in efficacy of insecticides were recorded after 360 hours of spray”
t0“okra”
Claim · model-written summary
Lambdacyhalothrin and neem oil at 4 and 5% were equally effective against whitefly and jassid on okra plants.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- Lambdacyhalothrin and neem oil @ 4 and 5% concentratione0
- Interactor
- whiteflye0pest
- Second interactor
- jasside0pest
- Outcome
- effective against whitefly and jasside0
- Direction
- equally effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lambdacyhalothrin and neem oil @ 4 and 5% concentration were equally effective against whitefly and jassid feeding on okra plants”
Claim · model-written summary
The tested treatments had no significant effect on plant height or number of fruit pods per plant in okra.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- tested treatmentse0
- Outcome
- plant height and yield parameter (number of fruits pods plant−1)e0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tested treatments had no significant effect on plant height and yield parameter (number of fruits pods plant−1)”
t0“okra”
Claim · model-written summary
Neem oil at 4 and 5% and lambdacyhalothrin had a significant impact on okra yield.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- neem oil @ 4 and 5% and lambdacyhalothrine0
- Outcome
- yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tested treatments of neem oil @ 4 and 5% and lambdacyhalothrin had induce significantly (P > 0.05) impact on yield parameter (yield)”
t0“okra”
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