Sienna
- Manufacturer
- BASF
- Category
- Herbicides
- Registered until
- Registration expired
- Registration number
- 14991
- Active materials
- picolinafen7.5 g/l
- pendimethalin300 g/l
A suspension concentrate, containing 7.5 g/l picolinafen and 300 g/l pendimethalin, for use in winter wheat and winter barley.
DIRECTIONS FOR USE
SIENNA is a herbicide containing pendimethalin and picolinafen with residual and contact activity for use in winter wheat and winter barley.
Restrictions/Warnings
DO NOT use more than one application of SIENNA in one growing season.
Soil Types
SIENNA can be used on any mineral soil.
Residual control may be reduced on soils with more than 6% organic matter.
DO NOT use on soils with more than 10% organic matter.
DO NOT use on stony or gravely soils as crop damage can occur, particularly if heavy rain follows treatment.
DO NOT use on water logged soil or soils prone to water logging.
Seedbed preparation
Seed beds must have a fine, firm tilth. Loose or cloddy seed beds must be consolidated prior to application, otherwise reduced weed control may occur. They may also cause seed to be inadequately covered which could result in crop damage.
Application
For pre-emergence applications, seed should be covered with a minimum of 3.2cm of settled soil.
Only treat shallow drilled crops post-emergence.
Do not spray undersown cereals or those to be undersown.
Avoid spraying during periods of prolonged or severe frosts.
Do not apply to crops suffering from stress, which may be caused for example by pests,disease, water logging, poor seedbed conditions or previous chemical treatment.
- Extreme care should be taken to avoid damage by drift on to plants outside the target area.
Emerged Crops - Do not roll emerged crops prior to application.
Post-Application Requirements
Do not soil incorporate.
Do not disturb the soil after application.
Do not roll autumn treated crops until the spring.
For residual control some soil moisture is required for SIENNA. Best results will be obtained if rain falls within 7 days of application. Residual control may be reduced under prolonged dry conditions.
Water logging that occurs soon after pre-emergence applications may lead to crop damage.
Some transient bleaching may be seen after application to some crops, this does not lead to yield loss.
Concentrated or diluted SIENNA may stain. Avoid spillage. Staining is minimised or completely removed if skin/clothes are washed immediately.
Weed Control
Susceptibility of weeds to single applications of SIENNA
Best results will be achieved by application to small actively growing weeds.
Weed: Annual Meadow-grass
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-S ; Post-em-S up to GS13 ;
Weed: Rough Meadow-grass
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-MS ; Post-em-MS up to 2 lvs ;
Weed: Charlock
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-MS ; Post-em- S up to 6 lvs ;
Weed: Cleavers
Rate:4.0l/ha SIENNA
Critical Comments: Post-em-MS up to 1 whorl ;
Weed: Common Chickweed
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-S ; Post-em-S up to 6 lvs ;
Weed: Common Field Speedwell
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-S ; Post-em-S up to 6 lvs ;
Weed: Common Fumitory
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-MS ; Post-em-S up to 3 lvs ;
Weed: Common Orache
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-S ;
Weed: Common Poppy
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-S ; Post-em- S up to 6 lvs ;
Weed: Corn Marigold
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-S ;
Weed: Crane’s-bill
Rate:4.0l/ha SIENNA
Critical Comments: Post-em-S up to 4 lvs ;
Weed: Fat-hen
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em- S;
Weed: Field Forget-me-not
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em- S;
Weed: Field Pansy S
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-S ; Post-em-S up to 6 lvs ;
Weed: Hemp-nettle (Day Nettle)
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-S ; Post-em- S pre-em ;
Weed: Henbit Dead-nettle S -
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-S ;
Weed: Ivy-leaved Speedwell
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-S ; Post-em-S up to 6 lvs ;
Weed: Knotgrass
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-S ;
Weed: Mayweeds
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em- MS;
Weed: Parsley Piert
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em- S;
Weed: Red Dead-nettle
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em- S; Post-em-S up to 6 lvs ;
Weed: Scarlet Pimpernel
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-S ;
Weed: Shepherd‘s Purse
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-MS ; Post-em- S up to 6 lvs ;
Weed: Small Nettle
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em- S;
Weed: Smooth Sowthistle
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-S ;
Weed: Volunteer Beans
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-RM ; Post-em- R ;
Weed: Volunteer Oilseed Rape (1)
Rate:4.0l/ha SIENNA
Critical Comments:Pre-em-S ; Post-em- MS up to 2 lvs ;
Resistance
Strains of some annual grasses (e.g. Black-grass, Wild-Oats, and Italian Ryegrass) have developed resistance to herbicides, which may lead to poor control. A strategy for preventing and managing such resistance should be adopted. Picolinafen is an inhibitor of carotenoid biosynthesis at the PDS step (a group that includes picolinafen and diflufenican).
To prevent the development of resistant weeds herbicides with different modes
of action must be used when applying in sequence. Guidelines have been produced by the Weed Resistance Action Group and copies are available from HGCA, CPA, your distributor, crop adviser or product manufacturer.
Crops
SIENNA can be used on all varieties of Winter Wheat and Winter Barley.
Time of application
Pre- and post- crop emergence, up to before pseudo-stem erect (before growth stage 30).
DO NOT apply pre-emergence to crops drilled after 30 November.
Rate of application
4.0 l/ha
Before using SIENNA on crops to be processed please consult your processor.
Following crops
Before rye-grass is drilled after a very dry season, plough or cultivate to at least 15 cm. In the event of crop failure the land must be ploughed or thoroughly cultivated to a minimum depth of 15 cm to ensure any residues are evenly dispersed throughout the soil.The minimum intervals (specified below) should elapse between the application of SIENNA and the sowing of one of the following crops listed below.
Autumn Applications of SIENNA
The following crops may be sown after a minimum of 5 months:
Spring Barley; Spring Field Beans ;Brussels Sprouts ;Carrots; Spring Wheat; Broad Beans ;Cabbage; Parsnips; Maize; Dwarf Beans; Calabrese; Parsley; Peas; Turnips ;Linseed; Cauliflower; Potatoes.
Following Spring and Early Summer Applications
The following crops may be sown or transplanted after a minimum interval of 2 months: Spring Field; Beans; Brussels Sprouts; Carrots; Broad Beans; Cabbage; Parsnips; Dwarf Beans ;Calabrese; Parsley; Peas; Cauliflower; Linseed; Turnips.
The following crops may be sown after a minimum interval of 5 months: Any crop (with the exception of Red Beet, Sugar Beet and Spinach) may be planted or sown. (A minimum interval of 12 months should elapse between application and sowing Red Beet, Sugar Beet and Spinach).
Mixing and Spraying
Apply SIENNA in 200 litres water/ha.
Ensure good, even spray cover of the target using a spray of fine or medium quality (BCPC definition).
Mixing
Three-quarters fill the tank with water.
To ensure thorough mixing of the product, invert the container several times before opening
Add SIENNA while re-circulating
Fill the tank
Maintain circulation while spraying.
Wash out the sprayer thoroughly after the use of SIENNA using a wetting agent or a proprietary spray tank cleaner particularly before using the sprayer in broad-leaved crops.
| Registered for cultures | Rate | BBCH |
|---|---|---|
| Winter barley | 4 l | 30 |
| Winter wheat | 4 l | 30 |