Impact of Planting Date and Insecticide Application Methods on <i>Melanaphis sorghi</i> (Hemiptera: Aphididae) Infestation and Forage Type Sorghum Yield
Studies on the management of the invasive <i>Melanaphis sorghi</i> are essential to refining integrated pest management strategies against <i>M. sorghi</i> in forage sorghum in the USA. The objective of this study was to determine the impact of planting date (early planting a...
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| Format: | Article |
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MDPI AG
2022-11-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/13/11/1038 |
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| author | Osariyekemwen Uyi Francis P. F. Reay-Jones Xinzhi Ni David Buntin Alana Jacobson Somashekhar Punnuri Michael D. Toews |
| author_facet | Osariyekemwen Uyi Francis P. F. Reay-Jones Xinzhi Ni David Buntin Alana Jacobson Somashekhar Punnuri Michael D. Toews |
| author_sort | Osariyekemwen Uyi |
| collection | DOAJ |
| description | Studies on the management of the invasive <i>Melanaphis sorghi</i> are essential to refining integrated pest management strategies against <i>M. sorghi</i> in forage sorghum in the USA. The objective of this study was to determine the impact of planting date (early planting and late planting) and in-furrow and foliar insecticide application of <i>flupyradifurone</i>, on <i>M. sorghi</i> infestation and forage sorghum yield in Tifton, Georgia and Florence, South Carolina, USA, in 2020 and 2021. Early planted sorghum supported slightly higher aphid density and severity of infestation as evident in the greater cumulative insect days values in the early planted sorghum at both Florence and Tifton in 2020 and 2021. A single foliar application reduced aphid infestations below the threshold level of 50 aphids per leaf. In contrast, in-furrow insecticidal application in selected plots at both locations significantly suppressed <i>M. sorghi</i> density to near-zero levels. Yield results in Florence in 2020 showed that sorghum yield was over 50% greater in early planted plots compared to late planted plots. Both insecticide treatments (foliar and in-furrow) resulted in significantly higher yield than untreated plots. These data indicate that early planting coupled with in-furrow and foliar insecticide applications can suppress <i>M. sorghi</i> infestations and improve silage production in forage sorghum in the USA. |
| first_indexed | 2024-03-09T18:58:43Z |
| format | Article |
| id | doaj.art-85840ebe9b2f4ea0a9aae5ebe06655cb |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-03-09T18:58:43Z |
| publishDate | 2022-11-01 |
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| record_format | Article |
| series | Insects |
| spelling | doaj.art-85840ebe9b2f4ea0a9aae5ebe06655cb2023-11-24T05:13:54ZengMDPI AGInsects2075-44502022-11-011311103810.3390/insects13111038Impact of Planting Date and Insecticide Application Methods on <i>Melanaphis sorghi</i> (Hemiptera: Aphididae) Infestation and Forage Type Sorghum YieldOsariyekemwen Uyi0Francis P. F. Reay-Jones1Xinzhi Ni2David Buntin3Alana Jacobson4Somashekhar Punnuri5Michael D. Toews6Department of Entomology, University of Georgia, 2360 Rainwater Rd., Tifton, GA 31793, USADepartment of Plant and Environmental Sciences, Clemson University, Pee Dee Research and Education Center, 2200 Pocket Rd, Florence, SC 29506, USAUSDA-ARS, Crop Genetics and Breeding Research Unit, 2747 Davis Road, Tifton, GA 31793, USADepartment of Entomology, University of Georgia, 1109 Experiment St., Griffin, GA 30223, USADepartment of Entomology and Plant Pathology, Auburn University, Auburn, AL 36849, USACollege of Agriculture, Family Sciences and Technology, Fort Valley State University, 1005 State University Dr., Fort Valley, GA 31030, USADepartment of Entomology, University of Georgia, 2360 Rainwater Rd., Tifton, GA 31793, USAStudies on the management of the invasive <i>Melanaphis sorghi</i> are essential to refining integrated pest management strategies against <i>M. sorghi</i> in forage sorghum in the USA. The objective of this study was to determine the impact of planting date (early planting and late planting) and in-furrow and foliar insecticide application of <i>flupyradifurone</i>, on <i>M. sorghi</i> infestation and forage sorghum yield in Tifton, Georgia and Florence, South Carolina, USA, in 2020 and 2021. Early planted sorghum supported slightly higher aphid density and severity of infestation as evident in the greater cumulative insect days values in the early planted sorghum at both Florence and Tifton in 2020 and 2021. A single foliar application reduced aphid infestations below the threshold level of 50 aphids per leaf. In contrast, in-furrow insecticidal application in selected plots at both locations significantly suppressed <i>M. sorghi</i> density to near-zero levels. Yield results in Florence in 2020 showed that sorghum yield was over 50% greater in early planted plots compared to late planted plots. Both insecticide treatments (foliar and in-furrow) resulted in significantly higher yield than untreated plots. These data indicate that early planting coupled with in-furrow and foliar insecticide applications can suppress <i>M. sorghi</i> infestations and improve silage production in forage sorghum in the USA.https://www.mdpi.com/2075-4450/13/11/1038insecticide efficacyaphid infestationfoliar applicationin-furrow applicationinsect-plant interactionsearly planting |
| spellingShingle | Osariyekemwen Uyi Francis P. F. Reay-Jones Xinzhi Ni David Buntin Alana Jacobson Somashekhar Punnuri Michael D. Toews Impact of Planting Date and Insecticide Application Methods on <i>Melanaphis sorghi</i> (Hemiptera: Aphididae) Infestation and Forage Type Sorghum Yield Insects insecticide efficacy aphid infestation foliar application in-furrow application insect-plant interactions early planting |
| title | Impact of Planting Date and Insecticide Application Methods on <i>Melanaphis sorghi</i> (Hemiptera: Aphididae) Infestation and Forage Type Sorghum Yield |
| title_full | Impact of Planting Date and Insecticide Application Methods on <i>Melanaphis sorghi</i> (Hemiptera: Aphididae) Infestation and Forage Type Sorghum Yield |
| title_fullStr | Impact of Planting Date and Insecticide Application Methods on <i>Melanaphis sorghi</i> (Hemiptera: Aphididae) Infestation and Forage Type Sorghum Yield |
| title_full_unstemmed | Impact of Planting Date and Insecticide Application Methods on <i>Melanaphis sorghi</i> (Hemiptera: Aphididae) Infestation and Forage Type Sorghum Yield |
| title_short | Impact of Planting Date and Insecticide Application Methods on <i>Melanaphis sorghi</i> (Hemiptera: Aphididae) Infestation and Forage Type Sorghum Yield |
| title_sort | impact of planting date and insecticide application methods on i melanaphis sorghi i hemiptera aphididae infestation and forage type sorghum yield |
| topic | insecticide efficacy aphid infestation foliar application in-furrow application insect-plant interactions early planting |
| url | https://www.mdpi.com/2075-4450/13/11/1038 |
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