Contest

Manufacturer
BASF
Category
Insecticides
Registered until
Registration expired
Registration number
10216
Active materials
Links
A water dispersible granule containing 150 g/kg (15% w/w) alphacypermethrin for the control of insect pests in oilseed rape, winter and spring wheat and barley, cabbage, Brussel sprouts, cauliflower, broccoli, calabrese and kale, peas and beans.
DIRECTIONS FOR USE
Contest is a contact and stomach acting insecticide with residual foliar activity.
 
Restrictions/Warnings
Damage may result unless all recommendations are carefully carried out.
DO NOT use less than the minimum volume of water specified.
Reduced volume spraying must not be used for cereal aphid control in wheat and barley after 31 March in year of harvest.
This product must not be applied to a cereal crop if any product containing a pyrethroid insecticide or dimethoate has been applied to that crop after the start of ear emergence (GS 51).
Do not apply this product in tank mixture with a triazole-containing fungicide when bees are likely to be actively foraging in the crop.
It is recommended that as a matter of good practice, spraying in oilseed rape should be carried out in the late evening or early morning or in dull weather if at all possible and local beekeepers should be advised of the intention to spray and the chemical being used.
Consult processors before using on crops for processing.
 
Crop Specific Information
 
WINTER OILSEED RAPE 
Pests:Cabbage Stem Flea Beetle and Rape Winter Stem Weevil. (Reduction of spread of Beet Western Yellows Virus).
Rate:RATE OF APPLICATION 67 g/ha
Critical Comments:
TIMING: Contest should be applied when adult Cabbage Stem Flea Beetle feeding damage is first seen on young rape plants. A second application should be made when larval damage is seen in the leaf petioles (normally one month later). In situations where no adult feeding damage is seen, the first application should be made when larval damage is first seen in the leaf petioles, followed by a second application one month later.*
NOTE: The use of Contest for the control of Cabbage Stem Flea Beetle will also control the adults and young larvae of Rape Winter Stem Weevil if these are present in the crop at the time of application. Applications of Contest at these timings will also reduce the spread of Beet Western Yellows Virus.
 
Pests:Cabbage Seed Weevil and Brassica Pod Midge
Rate:RATE OF APPLICATION 133 g/ha
Critical Comments:
TIMING Contest may be applied at any time during the flowering period when Seed Weevil numbers reach the threshold for spraying*. Best results are normally achieved when application coincides with the onset of peak adult activity. This often occurs between the 20 pod set stage and the end of flowering on the main raceme, i.e. 75% petal fall across the entire crop
 
WINTER AND SPRING OILSEED RAPE
A maximum total dose of 400 g/ha per crop may be applied to Winter Oilseed Rape. 265 g/ha/crop may be applied to Spring Oilseed Rape with a maximum of 133 g/ha/crop to be applied after the yellow bud stage in both Winter and Spring Oilseed Rape.
Pests:Pollen beetle
Rate:RATE OF APPLICATION 67 g/ha
Critical Comments:
TIMING Application should be made at the green to yellow bud stage, a soon as pest numbers reach the threshold* for spraying. A second application may be required 3-7 days later (the exact timing dependent on the speed of pest re-infestation and when the threshold is reached) within the green to yellow bud stage of the crop.
 
Pests:: Pollen Beetle and Cabbage Seed Weevil (mixed populations)
Rate:RATE OF APPLICATION 133g/ha
Critical Comments
TIMING Application should be made at yellow bud, as soon as pest numbers reach the threshold for spraying*.
NOTE: The use of Contest for the control of Pollen Beetle and Cabbage Seed Weevil will also give some reduction in the numbers of adult Cabbage Stem Weevil if these are present in the crop at the time of application.
 
SPRING OILSEED RAPE
 
Pests:Cabbage Seed Weevil
Rate:RATE OF APPLICATION 133 g/ha
Critical Comments:
TIMING Apply when pest numbers reach the threshold* for spraying, normally from the yellow bud stage of the crop.
Application at yellow bud will also control pollen beetle (see separate section on pollen beetle). A further application may be necessary if continuing pest pressure causes the seed weevil threshold* to be reached during flowering (between the 20 pod set stage and the end of flowering on the main raceme, i.e. 75% petal fall across the entire crop).
It is recommended that as a matter of good practice, spraying in oilseed rape should be carried out in the late evening or early morning or in dull weather if at all possible and local beekeepers should be advised of the intention to spray and the chemical being used.
 
 WHEAT AND BARLEY
The maximum total dose for autumn and spring application to wheat and barley is 265 g/ha/crop with a maximum of 100 g/ha/crop applied between 1 January and 31 March in the year of harvest. This may be followed by a single summer application of 100 g/ha/crop between 1 April and 31 August in the year of harvest, with a latest time of application of before early dough stage.
Pests:Cereal Aphids – autumn/winter (reduction of spread of barley yellow dwarf virus and control of yellow cereal fly).
Rate:RATE OF APPLICATION 100 g/ha
Critical Comments
TIMING High risk situations e.g. crops drilled before the 3rd week of September, crops following grass or grassy stubbles, or crops in areas with a history of BYDV. The first application should be made when aphids are first seen in the crop (or by mid-October). A second application will be necessary at the end of aphid migration, which is normally at the end of October or beginning of November. Where conditions continue to favour prolonged aphid activity, e.g. mild winters, and where two applications of another insecticide have already been made in the autumn, one application of Contest can be made in December to March. Other situations Apply in late October or early November to crops which have emerged by mid-October if aphids are found, or on ADAS warnings.
NOTE: Contest applied in the autumn for aphid control will also give some control of yellow cereal fly if present in the crop.
 
Pests:Cereal Aphids – summer
Rate:100 g/ha in 200 litres of water per hectare. A single application may be made from 1 April to 31 August in any one summe.
Critical Comments:Reduced volume spraying must not be used for cereal aphid control in wheat and barley after 31 March in the year of harvest.
TIMING Apply between the onset of flowering and the milky ripe stage (GS 61 to 73) when 66% or more heads are infested (equivalent to five aphids per ear) and aphid numbers are increasing. (Details of thresholds are available from ADAS or your specialist adviser).This product must not be applied to a cereal crop if any product containing a pyrethroid insecticide or dimethoate has been applied to that crop after the start of ear emergence (GS 51).
 

CABBAGE; BRUSSELS SPROUTS; CAULIFLOWER; BROCCOLI; CALABRESE AND KALE

Maximum number of applications: 4

Pests:  Pea and Bean Weevil
Rate: RATE OF APPLICATION 100 g/ha
Critical Comments:TIMING Apply when severe damage by adults to growing point is being caused in the early growth stages of the crop. Under high pest pressure a repeat application may be required 2–3 weeks later
 
Pests: Pea moth
Rate:RATE OF APPLICATION 67 g/ha
Critical Comments:TIMING Apply according to ADAS/PGRO warnings or as indicated by pheromone traps. For further information consult your specialist advisor. On dry peas repeat 14 days later. If moth activity remains high a third application may be needed.
 
Pests:Pea Aphid
Rate:RATE OF APPLICATION 100 g/ha
Critical Comments:TIMING For partial control apply according to current thresholds. Repeat if necessary, up to a maximum of three applications. Consult you specialist advisor for further details.

FIELD AND BROAD BEANS

Pests:Pea and Bean Weevil
Rate:RATE OF APPLICATION 100 g/ha
Critical CommentsTIMING Apply when severe damage by adults to growing point is being caused in the early growth stages of the crop. Under high pest pressure a repeat application may be required 2-3 weeks later.
 
Mixing and Spraying
Water volume
Contest should be applied in not less than 200 litres of water per hectare.
In situations where increased coverage is required, for example in dense or thick foliage or when the pests are concealed, the volume of water should be increased to where sufficient coverage is obtained, up to a maximum of 500 litres per hectare.
Reduced volume spraying must not be used on wheat and barley after 31 March in the year of harvest.
Mixing
Quarter fill the spray tank with clean water and begin agitation.
Add the recommended quantity of Contest and complete filling.
Continue agitation until spraying is complete.
Apply without delay maintaining continuous agitation until spraying is complete.
If a tank-mix with another material is required, always add Contest to the tank first and ensure it is evenly dispersed through the tank before adding the second material.
 
Registered for culturesRateBBCHPreharvest Interval
Spring wheat100 g51 - 73
Winter wheat100 g51 - 73
Winter rape133 g0
Spring rape133 g0
Spring barley100 g51 - 73
Winter barley100 g51 - 73
Cabbage67 g07
Brussels sprouts67 g07
Cauliflower67 g07
Broccoli67 g07
Chinese kale67 g07
Lacinato kale67 g07
Peas100 g011
Beans100 g011
Calabrese67 g07