Abstract
A field experiment was conducted to assess the impact of spray frequency and application rates of Agro-lambacin (Agro-lambacin Super 315 EC, containing profenfos 30% and lambda-cyhalothrin 1.5%) insecticide on the management of Fall Armyworm ( Spodoptera frugiperda ) in Sorghum. The study evaluated foliar application rates of 0.2 L ha⁻ 1 , 0.4 L ha⁻ 1 , and 0.6 L ha⁻ 1 , with application frequencies of once, twice, and thrice, alongside an untreated control. This was carried out at the Sirinka and Kobo sites using a randomized complete block design with three replications during the main cropping season of 2020 (July to November). Fall armyworm (FAW) larval infestation, foliar damage, Sorghum head weight, and overall yield were recorded. Results indicated significant variations across treatments. Notably, the three-time application of 0.6 L ha⁻ 1 and 0.4 L ha⁻ 1 consistently resulted in lower mean larval populations per plant and reduced foliar damage throughout the cropping season. These treatments also yielded higher grain yield, with percentage yield increases of 29.47% and 20.76%, respectively, compared to the untreated control at Kobo. In contrast, while treatment effects were evident at Sirinka during the spray regimes, the yield did not reflect this due to ongoing infestations after the completion of the spray applications. Therefore, a three-times application of Agro-lambacin, starting approximately 22 days after planting at ten-day intervals, using the manufacturer's recommended rate of 0.4 L ha⁻ 1 or an increased rate of 0.6 L ha⁻ 1 , is deemed effective and economically viable for Kobo and similar areas. However, for Sirinka, further research is necessary to explore the optimal spray sequence or total number of applications required for effective management of FAW in Sorghum.
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Claims 9
Claim · model-written summary
Three applications at 0.6 L per hectare lowered fall armyworm larval populations.
- Treatment
- three-time application of 0.6 L ha⁻ 1e0
- Outcome
- larval populations per plante0
- Direction
- lowere0
SorghumNot reportedInteractorComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the three-time application of 0.6 L ha⁻ 1 and 0.4 L ha⁻ 1 consistently resulted in lower mean larval populations per plant”
t0“Sorghum”
Claim · model-written summary
Three applications at 0.4 L per hectare lowered fall armyworm larval populations.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the three-time application of 0.6 L ha⁻ 1 and 0.4 L ha⁻ 1 consistently resulted in lower mean larval populations per plant”
t0“Sorghum”
Claim · model-written summary
Three applications at 0.6 L per hectare reduced foliar damage.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the three-time application of 0.6 L ha⁻ 1 and 0.4 L ha⁻ 1 consistently resulted in lower mean larval populations per plant and reduced foliar damage throughout the cropping season”
t0“Sorghum”
Claim · model-written summary
Three applications at 0.4 L per hectare reduced foliar damage.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the three-time application of 0.6 L ha⁻ 1 and 0.4 L ha⁻ 1 consistently resulted in lower mean larval populations per plant and reduced foliar damage throughout the cropping season”
t0“Sorghum”
Claim · model-written summary
At Kobo, three applications of 0.6 L per hectare raised grain yield by 29.47% against untreated control.
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These treatments also yielded higher grain yield, with percentage yield increases of 29.47% and 20.76%, respectively, compared to the untreated control at Kobo”
t0“Sorghum”
Claim · model-written summary
At Kobo, three applications of 0.4 L per hectare raised grain yield by 20.76% against untreated control.
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These treatments also yielded higher grain yield, with percentage yield increases of 29.47% and 20.76%, respectively, compared to the untreated control at Kobo”
t0“Sorghum”
Claim · model-written summary
At Sirinka, spraying did not translate into a yield gain because infestation continued afterward.
- Treatment
- spray regimese0
- Outcome
- yielde0
- Direction
- did not reflect thise0
- Qualifier
- ongoing infestations after the completion of the spray applicationse0
- Setting
- Sirinkae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while treatment effects were evident at Sirinka during the spray regimes, the yield did not reflect this due to ongoing infestations after the completion of the spray applications”
t0“Sorghum”
Claim · model-written summary
The authors judge three Agro-lambacin applications at 0.4 L per hectare effective and economically viable for Kobo.
- Treatment
- 0.4 L ha⁻ 1e0
- Outcome
- three-times application of Agro-lambacine0
- Setting
- Kobo and similar arease0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a three-times application of Agro-lambacin, starting approximately 22 days after planting at ten-day intervals, using the manufacturer's recommended rate of 0.4 L ha⁻ 1 or an increased rate of 0.6 L ha⁻ 1 , is deemed effective and economically viable for Kobo and similar areas”
t0“Sorghum”
Claim · model-written summary
The authors judge three Agro-lambacin applications at 0.6 L per hectare effective and economically viable for Kobo.
- Treatment
- 0.6 L ha⁻ 1e0
- Outcome
- three-times application of Agro-lambacine0
- Setting
- Kobo and similar arease0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a three-times application of Agro-lambacin, starting approximately 22 days after planting at ten-day intervals, using the manufacturer's recommended rate of 0.4 L ha⁻ 1 or an increased rate of 0.6 L ha⁻ 1 , is deemed effective and economically viable for Kobo and similar areas”
t0“Sorghum”
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