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A contact and residual herbicide for pre- and post-crop emergence use against a wide range of annual grasses and broad-leaved weeds in winter wheat and winter barley.

Vigon is a unique combination of three proven herbicide active substances designed to provide the highest pre-emergence control of grass-weeds and broad-leaved weeds in winter cereals. It gives the ideal start to a black-grass or rye-grass programme followed by Atlantis WG (mesosulfuron-methyl and iodosulfuron-methyl-sodium). When used at a low rate it is a cost-effective solution for annual meadow-grass and broad-leaved weeds

DIRECTIONS FOR USE
IMPORTANT: This information is approved as part of the Product Label. All instructions within this section must be read carefully in order to obtain safe and successful use of this product.

RESTRICTIONS
DO NOT treat undersown cereals or those due to be undersown.
Avoid treating crops suffering from stress as a result of drought, waterlogging, grazing, pests or disease attack, nutrient deficiency, soil compaction or other factors reducing crop growth.
Adverse crop effect (paling, reduction in vigour and biomass reduction) may occur when there is very wet weather before and after application, particularly where soils become waterlogged. These effects are typically transitory in nature and will normally have no adverse effect on crop yield in most cases.
Avoid use on waterlogged soils or on crops subject to temporary waterlogging by heavy rainfall, as there is a risk of transitory chlorosis and biomass reduction.
DO NOT use on sands or very light soils (ADAS 85 classification) or very stony or gravelly or free draining soils, as there is a risk of crop damage.
Shallow drilled crops must only be treated post-emergence.
DO NOT treat broadcast crops as uncovered seed may be damaged.
DO NOT soil incorporate.
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.
DO NOT use on soils containing more than 10% organic matter.
DO NOT disturb the soil after application (e.g. by harrowing or rolling).
Avoid spraying within 5 m of the field boundary to reduce effects on non-target insects or other arthropods.

WEEDS CONTROLLED
Strains of some annual grasses (e.g. black-grass, wild oats and 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 Vigon Resistance Management Strategy are:
ALWAYS follow WRAG guidelines for preventing and managing herbicide resistant weeds
DO NOT use Vigon as a stand-alone treatment for black-grass control. Use only in tank-mix or sequence with effective herbicides with alternative modes of action
DO NOT use Vigon as the sole means of grass weed or broad-leaved weed control in successive crops
ALWAYS use grass and broad-leaved weed herbicides with alternative modes of action throughout the cropping rotation
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.

Established perennial grasses and broad leaved weeds growing from rootstocks will not be controlled by Vigon. 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 Vigon 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. Residual control may be reduced under prolonged dry conditions.

CROP SPECIFIC INFORMATION
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 32mm of settled soil.
Use at a rate of 0.5 or 1.0 litres of product/ha according to crop and growth stage of weeds present. 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 bars is advised. Good, even spray coverage of soil and weeds is essential. Ensure that spray swaths do not overlap. To prevent damage, care must be taken to avoid drift onto neighbouring crops.
Chlorosis or stunting of the crop may be observed, particularly where applications are made to crops grown on light free draining soils. This effect is transitory in nature and there will normally be no adverse impact on grain yield.
Only one application of Vigon should be made to the crop.
Winter wheat (all varieties): Apply pre or post-emergence at a rate of 0.5 or 1.0 L/ha up to and including second tiller stage (GS22) and before 31st December in the year of planting.
Winter barley (all varieties): Apply pre or post-emergence at a rate of 0.5 L/ha up to and including third tiller stage (GS23) and before 31st December in the year of planting.

FOLLOWING CROPS and CROP FAILURE
Plough or cultivate to at least 15cm before planting following crops of oilseed rape, field beans and edible brassicae. Ensure thorough soil mixing before planting. Plough to at least 15cm before planting winter onions or spring drilled peas, sugar beet, carrots and onions. Ensure thorough soil mixing before planting. Wheat, barley and potatoes can be drilled without any special cultivations. In the event of crop failure, for any reason, plough to at least 15cm and sow only wheat, barley and potatoes. An interval of 20 weeks should elapse between treatment and subsequent sowing of spring wheat and spring barley or planting potatoes.
Where Vigon and other products containing diflufenican are applied to successive cereal crops, levels of diflufenican (DFF) will build up in the soil. Ploughing or cultivation, with complete inversion of the furrow, must take place before planting any following non-cereal crop, except potatoes. Even where ploughing or cultivation is carried out there may still be a risk of damage to following crops of
onions, leek and related species, or clover. As a precaution users who rent out their land to growers of these crops should not use DFF-containing products in successive years before renting out the land.

MIXING
Shake the container well before use. Half fill the spray tank with clean water and add the required amount of Vigon. Wash out the container and add the washings to the spray solution, before topping up with clean water. Maintain continuous agitation of spray solution during mixing and loading and until spraying is complete. Do not leave the sprayer filled with the spray solution standing for long periods. Wash out the sprayer thoroughly after use using a minimum of two rinses.