Lentipur 500 Atol and Buckler, three top quality chlorotoluron products from Nufarm
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Nufarm have two straight chlorotoluron products Atol and Lentipur 500. Buckler is a product containing chlorotoluron and diflufenican and is ideally suited for the control of Annual meadow-grass and a wide range of broadleaved weeds in the autumn. For more information about Buckler click here
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Chlorotoluron is similar to IPU but there are differences
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| Residual translocated herbicide controlling weeds pre- and post-emergence in a similar way to IPU
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| | Chlorotoluron has the same potential to get into watercourses as IPU although its chemical properties are not identical
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| | The maximum rate of use of chlorotoluron is 3500 g of active per hectare i.e. 5.0 l/ha of Atol and 7.0 l/ha of Lentipur 500 compared with a limit of 1500 g active for IPU. Nufarm trials have shown 2000 g active chlorotoluron per gives about the same level of control as 1500 g of IPU
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| | Blackgrass
| Blackgrass varies in its sensitivity to chlorotoluron. Most Blackgrass has reduced sensitivity to chlorotoluron for a variety of reasons. Nufarm recommend the use chlorotoluron at 2000 g only in a programme with other products where it will contribute to Blackgrass control and help manage resistance
| Ryegrasses and Wild oat
| Chlorotoluron generally outperforms IPU for control of these weeds. A full label rate of 3500 g ai /ha is required for Wild oat. 2750 g ai/ha is required for Ryegrasses. See label for details. Various tank-mixes and sequences can be used. Consult your Agronomist for more information
| Annual meadowgrass
| Chlorotoluron is equally effective as IPU. Rates above 1750 g ai/ha are needed. A higher rate will be needed where there are bad infestations
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| | Chlorotoluron generally controls a similar weed spectrum as IPU. Control of Mayweeds is a key advantage of chlorotoluron. With the demise of IPU it will be one of few actives which control this weed in the autumn. Weeds controlled by chlorotoluron are generally smaller and chlorotoluron may need to be applied a little earlier than IPU
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| | Chlorotoluron can be used pre- and post-emergence in winter wheat, winter barley and triticale. Lentipur 500 also has a pre-em only recommendation in Durum wheat
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| | Certain varieties do not tolerate chlorotoluron. About 80% of the area of winter wheat and well of 90% of barley can be sprayed. 
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Summary of key advantages of chlorotoluron
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- Pre and post emergence use in winter wheat, winter barley and triticale
- Control of Annual meadowgrass
- Control of many key broadleaved weeds in the autumn
- One of few options for grass weed control in winter barley
- Useful alone or in a programme with other chemistry for control of Perennial ryegrass where weed control is generally better than IPU
- Prevention of early weed competition
- Can help manage Blackgrass resistance as part of a programme
- Wide range of compatibilities
- Flexible dose rates
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Resistance warning
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Performance of chlorotoluron Blackgrass, Wild oat and Ryegrasses may vary from field to field according to the resistance status of the weeds and the history of the field. Always consult your agronomist for advice.
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Lentipur and Atol contain chlorotoluron. Always read the label: use pesticides safely.
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