Evaluating the timing of insecticide application to manage barley yellow dwarf virus and yield in winter barley
Barley yellow dwarf virus (BYDV) is an important viral disease of grain crops worldwide and a major cause of yield loss. The risk periods for BYDV infection coincide with milder temperature that prolongs aphid flight and facilitates viral transmission through primary and secondary aphid movement in...
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| Format: | Article |
| Language: | English |
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Compuscript Ltd
2022-11-01
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| Series: | Irish Journal of Agricultural and Food Research |
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| Online Access: | https://www.scienceopen.com/hosted-document?doi=10.15212/ijafr-2022-0108 |
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| author | L.E. Walsh S. Lacey D. Doyle M.T. Gaffney L. Mc Namara |
| author_facet | L.E. Walsh S. Lacey D. Doyle M.T. Gaffney L. Mc Namara |
| author_sort | L.E. Walsh |
| collection | DOAJ |
| description | Barley yellow dwarf virus (BYDV) is an important viral disease of grain crops worldwide and a major cause of yield loss. The risk periods for BYDV infection coincide with milder temperature that prolongs aphid flight and facilitates viral transmission through primary and secondary aphid movement in the crop. Secondary aphid movement is associated with greater BYDV spread in winter cereals. A critical component of BYDV management is therefore delaying sowing of winter cereals and correctly timing insecticide application to maximise crop protection. Previous research in Ireland considered insecticide timing in early (September) and late (October onwards) sown cereals. Early research did not consider action thresholds around temperature, aphid flight and risk of secondary spread. This research set out to understand the optimal timing of insecticide application in October sown winter barley to reduce BYDV infection and yield impact. A critical temperature of 3°C was used as a threshold for aphid development that leads to movement and BYDV spread, and insecticide treatments were applied to the crop at predictable intervals in relation to temperature. Results show that BYDV symptoms and yield are affected by spray time, location and year, although only significant with regard to the reduction of BYDV symptoms. For both BYDV symptoms and yield, there was a significant difference between untreated (control) plots and “early” and “late” applications of insecticide, again more notable for BYDV symptoms than yield. This work indicates the value of optimising a single insecticide spray for control of October sown cereals and supports decision-making in the management of cereal crops. |
| first_indexed | 2024-03-11T22:30:22Z |
| format | Article |
| id | doaj.art-dd04ec6195af4a44959c8e901d37ad70 |
| institution | Directory Open Access Journal |
| issn | 2009-9029 |
| language | English |
| last_indexed | 2024-03-11T22:30:22Z |
| publishDate | 2022-11-01 |
| publisher | Compuscript Ltd |
| record_format | Article |
| series | Irish Journal of Agricultural and Food Research |
| spelling | doaj.art-dd04ec6195af4a44959c8e901d37ad702023-09-23T07:21:39ZengCompuscript LtdIrish Journal of Agricultural and Food Research2009-90292022-11-0161237238310.15212/ijafr-2022-0108Evaluating the timing of insecticide application to manage barley yellow dwarf virus and yield in winter barleyL.E. Walsh0S. Lacey1D. Doyle2M.T. Gaffney3L. Mc Namara4Teagasc Horticultural Development Department, Ashtown, Dublin 15 D15 DY05, IrelandResearch Integrity & Compliance Officer, Munster Technological University, Cork T12 P928, IrelandTeagasc Crop Science Department, Oak Park, Co. Carlow R93 XE12, IrelandTeagasc Horticultural Development Department, Ashtown, Dublin 15 D15 DY05, IrelandTeagasc Crop Science Department, Oak Park, Co. Carlow R93 XE12, IrelandBarley yellow dwarf virus (BYDV) is an important viral disease of grain crops worldwide and a major cause of yield loss. The risk periods for BYDV infection coincide with milder temperature that prolongs aphid flight and facilitates viral transmission through primary and secondary aphid movement in the crop. Secondary aphid movement is associated with greater BYDV spread in winter cereals. A critical component of BYDV management is therefore delaying sowing of winter cereals and correctly timing insecticide application to maximise crop protection. Previous research in Ireland considered insecticide timing in early (September) and late (October onwards) sown cereals. Early research did not consider action thresholds around temperature, aphid flight and risk of secondary spread. This research set out to understand the optimal timing of insecticide application in October sown winter barley to reduce BYDV infection and yield impact. A critical temperature of 3°C was used as a threshold for aphid development that leads to movement and BYDV spread, and insecticide treatments were applied to the crop at predictable intervals in relation to temperature. Results show that BYDV symptoms and yield are affected by spray time, location and year, although only significant with regard to the reduction of BYDV symptoms. For both BYDV symptoms and yield, there was a significant difference between untreated (control) plots and “early” and “late” applications of insecticide, again more notable for BYDV symptoms than yield. This work indicates the value of optimising a single insecticide spray for control of October sown cereals and supports decision-making in the management of cereal crops.https://www.scienceopen.com/hosted-document?doi=10.15212/ijafr-2022-0108barley yellow dwarf virus (bydv)sulfoxaflorthresholdtransformyield |
| spellingShingle | L.E. Walsh S. Lacey D. Doyle M.T. Gaffney L. Mc Namara Evaluating the timing of insecticide application to manage barley yellow dwarf virus and yield in winter barley Irish Journal of Agricultural and Food Research barley yellow dwarf virus (bydv) sulfoxaflor threshold transform yield |
| title | Evaluating the timing of insecticide application to manage barley yellow dwarf virus and yield in winter barley |
| title_full | Evaluating the timing of insecticide application to manage barley yellow dwarf virus and yield in winter barley |
| title_fullStr | Evaluating the timing of insecticide application to manage barley yellow dwarf virus and yield in winter barley |
| title_full_unstemmed | Evaluating the timing of insecticide application to manage barley yellow dwarf virus and yield in winter barley |
| title_short | Evaluating the timing of insecticide application to manage barley yellow dwarf virus and yield in winter barley |
| title_sort | evaluating the timing of insecticide application to manage barley yellow dwarf virus and yield in winter barley |
| topic | barley yellow dwarf virus (bydv) sulfoxaflor threshold transform yield |
| url | https://www.scienceopen.com/hosted-document?doi=10.15212/ijafr-2022-0108 |
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