Shiro

Manufacturer
UPL
Category
Herbicides
Registered until
2026-06-30
Registration number
17439
Active materials
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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
SHIRO must not be applied to any crop suffering from stress as a result of drought, waterlogging, low temperatures, pest or disease attack, nutrient or lime deficiency or other factors reducing crop growth.
Due to the high level of activity of the herbicide, special care must be taken to avoid damage by drift onto plants outside the target area, or onto surface waters or ditches. Thorough cleansing of equipment is also very important - see below.
Apply no more than four times to any sugar beet or fodder beet crop.
Do not use on crops grown for seed.

WEED CONTROL
SHIRO works mainly by foliar action. Tank-mixed with an herbicide partner it controls a wide range of broad-leaved weeds. It is most effective if applied when the weeds are small and actively growing. Good spray cover of weeds must be obtained.
Susceptible plants cease growth almost immediately after application and symptoms can be seen about 5 to 10 days after application. Best results are achieved when SHIRO plus approved tank-mix partner are applied in a programme of up to four sequential sprays.
It is important to identify the weeds occurring in the crop and refer to the weed table to ensure that the weeds present are those susceptible to SHIRO plus appropriate tank-mix partner.

Weed resistance
SHIRO contains triflusulfuron-methyl, a sulfonylurea, which is an ALS Inhibitor. Do not apply SHIRO in sequence or in tank mixture with any other product containing ALS inhibiting herbicides. When herbicides with the same mode of action are used repeatedly over several years in the same field, selection of resistant biotypes can take place. These can propagate and may become dominating. A weed species is considered resistant to an herbicide if it survives a correctly applied treatment at the recommended dose. Development of resistance with a weed species can be avoided or delayed by alternating (or tank mixing) with suitable products having a different mode of action.

CROPS
SHIRO can be used on all varieties of sugar beet and fodder beet at the growth stages given below.

FOLLOWING CROPS
Following Crops - After applying SHIRO to a beet crop, only winter cereals should be sown in the same calendar year. Any crop may be sown or planted in the following spring (next calendar year) after a beet crop treated with SHIRO.

CROP FAILURE
In the event of crop failure for any reason, sow only spring barley, linseed or beet within four months of application of SHIRO, provided this agrees with the recommendations of any partner product. After four months from application, refer to “Following Crops” section.

TIMINGS
The first application should be made in the spring when the first weeds have. Subsequent applications should be made every 5 - 14 days when new flushes of weeds are at or just past the cotyledon stage.
Do not apply SHIRO after the leaves of the crop have met between the rows.
Do not apply SHIRO more than four times to any beet crop.
SHIRO mixtures can be applied from the early cotyledon stage of sugar beet or fodder beet as part of a planned programme following pre-emergence application of all UK approved pre-emergence herbicides.
Before spraying ensure that the sprayer is clean and in good working order. Check all hoses, filters and nozzles and replace if worn or damaged. Calibrate according to sprayer manufacturer’s recommendations.
Apply SHIRO by one of the following methods.

VOLUME AND APPLICATION
BEFORE USING SHIRO, SPRAYING EQUIPMENT MUST BE CLEAN AND FREE FROM CONTAMINATION WITH OTHER PESTICIDES

OVERALL APPLICATION
SHIRO should be applied overall in 80 - 150 litres of water per hectare, using suitable equipment to give a FINE spray, as defined by BCPC. Good, even spray cover of the weeds is essential for best results.
When applying SHIRO, care should be taken not to overlap spray swaths.

BAND APPLICATION
Similar doses, water volumes and spray quality should be used as an overall application, but the area covered will be dependent upon the row spacing and band width. Careful calibration is essential to achieve best results.

DOSE
SHIRO should be applied at 30 g/ha in conjunction with a recommended adjuvant or suitable herbicide tank-mix partner(s) (see weed susceptibility table).

SOIL
SHIRO can be used on all soil types. Weed control may be reduced when soil conditions are very dry.

WEATHER
Avoid high light intensity (full sunlight) and high temperatures (above 21°C) on the day of spraying. Avoid periods of substantial day to night temperature changes or when frost is expected.

MIXING
SHIRO mixes easily with water, but the following mixing procedure should be followed:
Quarter fill the spray tank with water, start the agitation and add the required quantity of SHIRO directly to the tank or via an induction bowl when fitted, without prior creaming.
Continue agitation while topping up the tank and while spraying. Use the tank the same day as mixing.
For mixing instructions with phenmedipham as a tank-mix partner, see Compatibility Section.

COMPATIBILITY
In any tank-mix, with the exception of phenmedipham, add SHIRO to the spray tank first and ensure it is fully dispersed before adding the partner product(s). If a partner product contains phenmedipham, follow the manufacturer’s recommendations for mixing that product before adding SHIRO.
To widen the spectrum of activity, SHIRO should be tank-mixed with other herbicides. SHIRO can be tank-mixed with Beetup Flo, Bettix Flo and Betasana Trio, approved formulations of phenmedipham containing 160 g/L or metamitron containing 700 g/L. Products should only be tank-mixed if each product can be applied within the manufacturer’s label recommendation.
When SHIRO tank-mixes are used in sequence with graminicides, the minimum time interval should be observed between applications in accordance with the manufacturer’s recommendations.
Do not apply SHIRO in sequence or in tank-mix with a product containing any other sulfonylurea.

Registered for culturesRate
Beets30 g
Sugar beets30 g