Ranger

Manufacturer
Cheminova
Category
Herbicides
Registered until
Registration expired
Registration number
17123
Active materials
Links
A suspension concentrate containing 500 g/l flufenacet for use as a pre and post emergence herbicide for the contact and residual control of a range of grass and broadleaved weeds in winter wheat, winter barley, winter rye and winter triticale.
 
DIRECTIONS FOR USE
IMPORTANT: This information is approved as part of the product label. All instructions within this section should be read carefully in order to obtain safe and successful use of this product.
 
General Information
Flufenacet is oxyacetamide herbicide which works through the inhibition of cell division. Flufenacet is a selective contact and residual herbicide, absorbed through shoots (primarily coleoptile) and roots of germinating grasses and broadleaved weeds. Flufenacet belongs to the chemical family of thiadiazole which acts by inhibition of cell division and cell growth. The primary target site may be fatty acid metabolism. HRAC group K3.
Details of the HRAC codes, which may be used as a tool in developing a resistance management strategy may be found on the HRAC website at www.plantprotection.org/HRAC/. The Weed Resistance Action Group (WRAG) provides supporting information, including management guidelines, a herbicide-resistant grass weeds audit and facts about resistance at www.pesticides.gov.uk/rags.asp?id=714. It is important to integrate a long-term cultural and chemical weed control strategy and the recommendations of WRAG should be followed.
Avoid spraying within 6 m of the field boundary to reduce effects on non-target insects or other arthropods.
 
CAUTIONS
DO NOT treat undersown cereals or those due to be undersown.
Shallow drilled crops must only be treated post-emergence.
DO NOT soil incorporate. DO NOT spray when crops are under stress from cold, drought, grazing, pests or disease attack, nutrient deficiency, etc.
Avoid spraying during periods of prolonged or severe frosts as sharp or severe frosts following application may cause transitory discoloration or scorch from which the crop will normally recover.
Adverse crop effect (paling, reduction in vigour) may occur when there is very wet weather before and after application, particularly on crops grown on light free draining soils or where soils become waterlogged. These effects are typically transitory in nature and will have no adverse effect on crop yield in most cases.
DO NOT use on waterlogged soils or soils prone to waterlogging. RANGER is not recommended for the post-emergence control of weeds on the following soil types; sandy clays, clays and silty clays (ADAS 85 classification). DO NOT use on sands or very light soils (ADAS 85 classification) or very stony or gravelly soils, as there is a risk of crop damage.
Weed control may be reduced on soils with more than 6% organic matter.
DO NOT use on soils containing more than 10% organic matter.
DO NOT treat broadcast, shallow drilled crops or those sown under unfavourable weather condition as emerging seeds could be damaged.
DO NOT disturb the soil after application (e.g. by harrowing or rolling).
Extreme care must be taken to avoid spray drift onto non-crop plants outside of the target area.Ensure that spray swaths do not overlap.
 
CROPS TREATED AND TIME OF APPLICATION
Winter wheat and winter triticale (all varieties): Apply pre or post emergence up to before third tiller detectable (GS23).
Winter barley and winter rye (all varieties): Apply pre or post emergence up to before third tiller detectable (GS23).
 
WEEDS CONTROLLED
Good weed control depends on burying any trash or straw before or during seedbed preparation. Seedbeds must have a firm, fine tilth. Loose or cloddy seed beds must be consolidated otherwise crop damage may result due to inadequate seed cover. For pre-emergence treatments, seed should be covered with a minimum of 32 mm of settled soil.
Weed susceptibilty at 0.48 l/ha
Blackgrass -Moderately Resistant pre- and post-emergence up to and including 3 true leaves
Loose silky bent- Susceptible pre- and post-emergence up to and including 3 true leaves
Common chickweed- Susceptible pre- and post-emergence up to 5 cm
Common field-speedwell- Susceptible pre- and post-emergence up to and including 4 leaf stage
Field pansy -Susceptible pre- and post-emergence up to and including 4 leaf stage
Field penny cress- Susceptible pre- and post-emergence up to and including 3 true leaves
Scentless mayweed -Moderately Susceptible pre- and post-emergence up to and including 2 leaf stage
Shepherds purse -Susceptible pre- and post-emergence up to and including 3 true leaves
Smooth sowthistle -Moderately Susceptible pre- and post-emergence
Volunteer oilseed rape- Moderately Resistant pre- and post-emergence
 
Established perennial grasses and broad leaved weeds growing from rootstocks will not be controlled by RANGER. Speed of activity can be slow and is dependent on temperature and growing conditions. Activity can be slow under cool conditions and the final level of weed control may take some time to appear. Some soil moisture is required for RANGER to be activated. Moist soil at and after application is required to give the best results. Best results will be obtained if rain falls within 7 days of application.
Where black-grass is present always use Ranger in tank-mixture with another product containing a different mode of action and which is effective against black-grass.
Residual control may be reduced under prolonged dry conditions.
 
WATER VOLUME
Apply via a horizontal boom sprayer. Apply in 200-400 L/ha as a MEDIUM spray (BCPC category). Use the higher volume where crop or weed foliage is dense. A spray pressure of at least 2 bar is advised. Good, even spray coverage of soil and weeds is essential.
 
MIXING AND APPLICATION
Shake the container thoroughly before opening and use. Half-fill the spray tank with clean water and begin agitation. Add the required quantity of RANGER to the water. Rinse the empty container thoroughly with water and add the rinsings to the tank. Complete the filling and apply without delay. Maintain agitation while travelling and throughout the spraying operation.
If tank mixes are to be used, each product should be added separately to the spray tank, taking due note of any instructions given as to the order of mixing.
After use wash out the sprayer thoroughly three times with water.
 
COMPATIBILITY
For up to date details of compatible tank-mixes contact your local supplier or Headland Agrochemicals Limited representative. When tank mixing with other products use a minimum water volume of 200 l/ha. Any use restrictions of products in the mixture should be observed.
 
RESISTANCE
Strains of some annual grasses (e.g. Black-grass, Wild-oats, Italian Rye-grass) have developed resistance to herbicides which may lead to poor control. A strategy for preventing and managing such resistance should be adopted. Guidelines have been produced by the Weed Resistance Action Group and copies are available from the HGCA, CPA, your distributor, crop advisor or product manufacturer.
Key aspects of the RANGER Resistance Management Strategy are:
ALWAYS follow WRAG guidelines for preventing and managing herbicide resistant weeds. 
 DO NOT use RANGER as a stand-alone treatment for black-grass control. Use only in tank-mix or sequence with herbicides with alternative modes of action. 
Throughout the cropping rotation and in successive crops DO NOT use RANGER as the sole means of grass weed or broadleaved weed control and ALWAYS use grass and broad-leaved weed herbicides with alternative modes of action. 
ALWAYS monitor weed control effectiveness and investigate any odd patches of poor grass or broad-leaved weed control. If unexplained contact your agronomist who may consider a resistance test appropriate. 
To reduce the risk of developing resistance, applications should be made to young, actively growing weeds. 
Use crop rotation and other cultural control measures to prevent and manage herbicide resistant grass weeds.
  
FOLLOWING CROPS AND CROP FAILURE
No restrictions on following crops after harvest are required.
However, in the event of crop failure in the autumn after treatment with RANGER, only wheat and barley can be planted as a following crop.
In the event of crop failure for any reason following treatment of RANGER, after at least 12 weeks, the succeeding crops that can be grown without ploughing are: spring wheat, spring barley and peas and after ploughing to 15cm also: maize, sugar beet, oilseed rape, and potatoes.
 
Registered for culturesRate
Winter wheat0.48 l
Winter barley0.48 l
Winter triticale0.48 l
Winter rye0.48 l