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Sugar Beet FAQsIn this section you will find answers to the questions asked most frequently about Dow AgroSciences’ products that are used in sugar beet grown in the UK. Areas covered include the control of creeping thistle and volunteer potatoes, control of powdery mildew, and the incidence and control of cutworm. If your question is not answered here, please Contact Us or call our Technical Hotline on 0800 689 8899. What is the correct procedure to follow when controlling creeping thistle in sugar beet?What is the correct procedure to follow when controlling volunteer potatoes in sugar beet? How soon after applying Dow Shield† can I use a tractor hoe? What is the harvest interval after applying quinoxyfen to sugar beet? What is the current threat to sugar beet from cutworm? What are the LERAP categories of products used in sugar beet? What is the rainfastness period of products used in sugar beet? What is the correct procedure to follow when controlling creeping thistle in sugar beet?Successful control of creeping thistle in sugar beet is based on the use of Dow Shield† in conjunction with other herbicides, such as ethofumesate + phenmedipham and metamitron with oil. It is essential to follow up this treatment with an additional 1.0l/ha of Dow Shield three to four weeks after the initial application. For more detailed information please see the Thistles pages in the sugar beet section. What is the correct procedure to follow when controlling volunteer potatoes in sugar beet?Dow Shield† , applied in tank mixture with ethofumesate containing products, is the very best treatment against volunteer potatoes in sugar beet. The effect on progeny tubers is carried through to succeeding generations, thus reducing the threat from volunteers in the second year after treatment. For more detailed information please see the Volunteer Potatoes pages in the sugar beet section. For more in-depth advice about controlling volunteer potatoes read A Practical Guide to Achieving Integrated Control of Volunteer Potatoes (1.0MB PDF). How soon after applying Dow Shield† can I use a tractor hoe?If Dow Shield has been applied to control creeping thistle or volunteer potatoes, a tractor hoe should not be used for at least 28 days. If this period is reduced, poor control may result. What is the harvest interval after applying quinoxyfen to sugar beet?If Apres*, Erysto* or Fortress* have been applied to sugar beet for the control of powdery mildew the crop should not be harvested for at least 28 days. What is the current threat to sugar beet from cutworm?Please refer to the Sugar Beet Pestwatch pages for the latest information and advice. What are the LERAP categories of products used in sugar beet?
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| Product | LERAP | Rainfastness (hours) |
| Apres | B | 1 |
| Dow Shield | x | 6 |
| Dursban WG | A | soil - n/a / leaf - 4 |
| Equity | A | soil - n/a / leaf - 4 |
| Erysto | B | 1 |
| Fortress | B | 1 |
| Kerb 50W | x | n/a |
| Kerb Flo | x | n/a |
| Menace 80EDF | x | n/a |
| Precis | x | n/a |
| Treflan | x | n/a |
†Trademark of The Dow Chemical Company
*®™ Trademark of Dow AgroSciences LLC