BoudhaPlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

A water dispersible granule formulation sulfonylurea containing 250gm/kg of Metsulfuron-methyl and 250gm/kg of Tribenuron-methyl for spring weed control on all varieties of winter cereals, spring cereals, triticale, oat and winter rye.

WINTER AND SPRING WHEAT, WINTER AND SPRING BARLEY, TRITICALE, OAT AND WINTER RYE
Maximum individual dose: 20 g product per hectare
Maximum number of treatments: One per crop
Latest time of application: Before flag leaf sheath extending stage
Other specific restrictions: this product must only be applied from 1 February in the the of harvest until the specified latest time of application.

BOUDHA is most effective when applied to small, actively growing weeds. As larger weeds may become less susceptible, it is important to note the size of each weed species so that application is made at the optimum time. Good spray cover of the weeds must be obtained. Weed control may be reduced when soil conditions are very dry. Residual effects may be reduced by heavy rain. The susceptibility rating of weeds in the following table refer to good spray cover and good growing conditions.

Weed resistance
This product contains tribenuron-methyl and metsulfuron-methyl, which are ALS inhibitors, also classifield by the Herbicide Resistance Action Committee as ‘Group B’. 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 a 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. A strategy for preventing and managing resistance should be adopted. The Weed Resistance Action Group has produced guidelines and copies are available from the HGCA, CPA, your distributor, crop advisor or product manufacturer.

Soil and Weather
Boudha can be used on soil types. Weed control may be reduced when conditions are very dry.

Volume and application
Before using Boudha, spraying equipment must be clean and free from contamination with other pesticides.
Apply in 100-400 litres water per hectare. For application in 100 litres of water per hectare use suitable ground equipment to give good spray cover of the weeds. Use a conventional field crop sprayer at a pressure of 2-3 bars and apply as a medium spray (as defined be BCPC). When applying Boudha, care should be taken not to overlap spray swaths.

Mixing
Quarter fill the spray tank clean water, start the agitation an add the required quantity of Bougha directly to the tank without prior creaming. Continue agitation while topping up the tank and while spraying.

Compatability
In any tank-mix add Boudha to the tank first and ensure it is fully dispersed before adding the partner product. Do not allow Boudha to come into contact with undiluted pesticide concentrate. Products should only be tank-mixed if each product can be applied within the label recommendations for its use. For further information contact your Rotam distributor or view www.rotam.co.uk.

Only cereals, oilseed rape or field beans may be sown in the same calendar year to succeed a cereal crop treated with Boudha following the above joint applications. Before sowing either oilseed rape of field beans, soil should be cultivated to a depth of 20 cm. No special requirements for cultivation are needed where cereals are to be sown as the following crop.
Vigour reductions may be seed in following crops of oilseed rape and field beans under certain circumstances e.g. dry summer. Any affects should be outgrown and should not result in any yield loss.
When using tank-mixtures take care not to overlap spray swaths.
Do not apply Boudha to any cereal crop in sequence or tank-mixture with any product containing any other sulfonylurea herbicide product.
Do not tank-mix Boudha with chlorpyrifos. Allow a minimum of 14 days between application of Boudha and any chlorpyrifos treatment.

CROP
CEREALS
Crop safety
Boudha can be used on all varieties of winter and spring wheat, winter and spring barley, triticale, oat and winter rye between the growth stages given below.

Timing
Boudha must only be applied in the spring after 1^st of Februrary form the three-leaf stage up to the flag leaf sheath extension stage of crop growth (GS39). Boudha should not be applied within 7 days of rolling the crop. Do not apply Boudha more than once to any cereal crop.

Dose
Apply Boudha at 20 g of formulated product per hectare.

Following crops
Only cereals, oilseed rape, field beans or grass may be sown in the same calendar year as harvest of a cereal crop treated with Boudha. Where joint application with other sulfonylurea and ‘ALS-inhibiting’ herbicides is required, recommendations in the compatibility section must be followed. In the spring, following cereal harvest, there is no restriction on crop establishment. Sugar beet may be grown in the spring, following harvest of a preceding cereal crop which has received one of the above sequences.
Replacement crops
In case of crop failure for any reason, sow only winter wheat within three months of applications of Boudha. Before sowing, soil should be ploughed and cultivated to a depth of at least 15 cm.

Warnings
Extreme care must be taken to avoid spray drift onto non-crop plants outside of the target area. Spraying equipment should not be drained or flushed onto land planted with or intented for planting with trees or crops other than cereals.