Benta 480 SLPlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

A soluble concentrate containing 480 g/litre (40.3% w/w) bentazone as the sodium salt.

Benta 480 SL is a herbicide for post emergence broad leaved weed control in dwarf French, navy and runner beans, peas, linseed and narcissi.

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.
Benta 480 SL is a herbicide for post emergence broad leaved weed control in dwarf French, navy and runner beans, peas, linseed and narcissi.

Restrictions/Warnings
Weed control
The best weed control will be achieved if crops are sprayed when weeds are small and actively growing, provided the crop is within the correct growth stages, see below.
It is essential to achieve full cover of all weed surface areas, especially the growing point. Therefore adjust spray volumes and pressures according to the size and density of the weed populations and crop cover.
It is preferable to use the split dose if conditions are likely to be very warm, sunny or humid, if foliage is tender or if a sensitive variety is to be treated (see Section 4.2).
Only single applications are approved for use in peas.
Where weeds classed as moderately susceptible form an important part of the weed population, the split dose will only give acceptable control if the weeds are cotyledon only. If true leaves are present, a single application of 3 l/ hectare should be made.
The addition of a suitable adjuvant is recommended only in dwarf French beans to improve control of fat hen, particularly when dry conditions are prevalent.
Enhanced control of other weeds listed as susceptible may also be achieved.
Sequences/Tank mixes
Sequence with other spray chemicals:
Do not apply insecticides within 7 days of treatment with BENTA 480 SL.
BENTA 480 SL BEFORE a post emergence grass herbicide: leave an interval of at least 7 days between treatments.
BENTA 480 SL AFTER a post emergence grass herbicide: leave an interval of 14 days and carry out a leaf wax test where relevant.
Other than the permitted mixtures in the relevant crops, do not tank mix BENTA 480 SL with any other products.
Weather conditions
Do not apply BENTA 480 SL or any of the recommended mixtures to any crop that may have been subjected to stress conditions, such as herbicide or disease injury, excessive acidity/alkalinity, trace element deficiency, drought, waterlogging, widely fluctuating temperatures, or physical damage to the foliage as caused by abnormal wind, rain, hail or frost.
Do not spray under HOT SUNNY CONDITIONS when temperatures are at or above 21°C, particularly during the mid day period. When the above conditions occur, spraying should be delayed until the evening. This is particularly important when there has been a change to hot sunny weather following a cool cloudy period.
Do not spray if rain or frost is expected, nor if the foliage is wet. A minimum period of 6 hours free from rain is required after application.
Do not apply BENTA 480 SL during periods of drought or unseasonably cold weather as unsatisfactory weed control may result.
Crops
Check varietal tolerance of varieties before using.
A satisfactory leaf wax test using crystal violet marker dye, must be carried out before applying BENTA 480 SL or the recommended mixtures to peas.
DO NOT treat forage pea varieties or mange-tout.
CONSULT PROCESSORS BEFORE USE.
Application
Do not overlap spray swaths.
Avoid spray drift onto neighbouring crops, particularly lettuce and sugar beet.
The recommended water volume is 100 to 450 litres/hectare. The lowest volume of 100 litres/hectare can only be used when weeds are no larger than cotyledon stage, weed density is low to moderate and crop shielding is negligible.

WASH EQUIPMENT thoroughly immediately after use. Fill the tank with clean water and leave overnight. Spray out before storage or using other products. Traces of the product may cause damage to susceptible crops sprayed later.

Crops
Dwarf French, Navy and Runner Beans
Time of Application

Apply BENTA 480 SL in runner beans when the crop has between one and two trifoliate leaves and in dwarf French and navy beans as soon as the crop has two trifoliate leaves.
Crop selectivity is partly dependent on adequate leaf wax formation. When conditions which reduce leaf wax occur the application should be delayed by at least 5 to 7 days to await recovery.
BENTA 480 SL may cause transient scorch, which can be prolonged with applications later than the three trifoliate leaf stage.

Method of Application
BENTA 480 SL can be applied either by a conventional single dose or preferably by a split dose treatment.

Control of Fat Hen in Dwarf French Beans
See Section 1 BENTA 480 SL use with a suitable adjuvant.

Peas
BENTA 480 SL may be used alone or in mixture with Tropotox (PCS No. 03525).

BENTA 480 SL, or the above mixture may be used following pre emergence broad leaf herbicides provided that the crop is undamaged and showing no adverse symptoms of herbicide application Avoid application to crops which are under stress from physical damage or disease, or other factors.
A satisfactory leaf wax test using crystal violet marker dye must be performed before applying BENTA 480 SL or BENTA 480 SL mixtures, particularly with early drillings which tend to have less leaf wax.
Slight scorch of the leaf margins and/or hormonal twisting may occur shortly after spraying but the crop will soon recover; yield and maturity will not be adversely affected.

Time of Application
Apply BENTA 480 SL or BENTA 480 SL + Tropotox (PCS No. 03525) from when the peas have three nodes (3 fully expanded leaves) until before the flower buds can be found enclosed in the terminal shoot. The optimum timing is when the majority of weeds have germinated, but are still at the seedling stage.

Linseed
Since linseed offers poor weed competition, weed control is important, especially in the early growth stages. BENTA 480 SL may be used alone or following pre emergence herbicides, provided that the crop is showing no adverse symptoms

Time of Application
Apply when the crop is between 21 /2 - 30 cm tall, but before the flower buds are visible. The optimum timing is when the majority of weeds have germinated and are still in the seedling stage. As a guide, this is usually when the crop is between 71 /2 - 20 cm tall.

Methods of Application
BENTA 480 SL can be applied either by a conventional single dose or by a split dose treatment

Mixing and Spraying
Mixing
Half fill the spray tank with clean water and start the agitation. Pour in the required amount of BENTA 480 SL.
Add the remainder of the water and continue agitation until spraying is completed.
When tank mixes are to be used, each product should be added separately to the spray tank.
Application
All applications should be made as a FINE spray, as defined by BCPC, unless the highest water volumes are used when FINE or MEDIUM sprays are permissible. It is essential to achieve full cover of all weed surface areas, especially the growing point. Therefore ADJUST SPRAY VOLUMES AND PRESSURES ACCORDING TO THE SIZE AND DENSITY OF THE WEED POPULATIONS AND CROP COVER.
BENTA 480 SL can be applied as a single dose in all recommended crops or as a split dose in dwarf, french, navy and runner beans, linseed and narcissi. The split dose will control susceptible weeds from cotyledon up to 2 true leaves while the single dose is effective on weeds up to 4 to 6 true leaf stage. The split dose method has generally given better weed control and enhanced crop safety over the conventional single dose, but if weeds are larger than 2 true leaves, it is necessary to use the single dose method.
Timing of Split Dose
The optimum timing for the first application is when the first flush of weeds are at the cotyledon stage. The second follow up dose should be applied within 7 to 10 days of the first dose, depending on the control achieved by the initial dose or the appearance of the second weed flush. See individual sections below for crop growth stage limitations.
A maximum of two applications may be made: 1.5 l/hectare followed by 1.5 l/ hectare or 2 l/hectare followed by 1.0 l/hectare.
The 1.5 l/1.5 l/hectare split is preferable if conditions are likely to be very warm, sunny or humid, if foliage is tender or if a sensitive variety is to be treated.
The recommended water volume is 100-220 litres/hectare. The lowest volume of 100 litres/hectare can only be used when weeds are no larger than cotyledon stage, weed density is low to moderate and crop shielding is negligible.

Single Dose and Mixtures
Where BENTA 480 SL is recommended as a single application in this text, it should be applied at 3 l /hectare.
When applied alone or in mixture with other products, the recommended water volume is 220-450 litres/ hectare.
The lowest volume of 220 litres/hectare should only be used when all the following conditions apply:
weeds at cotyledon to 2 leaves only
weed density is low to moderate
crop shielding is negligible
Flat fan or high pressure hollow cone nozzles are suitable under these conditions.
For other situations, 330-450 litres/hectare is recommended, preferably applied through flat fan nozzles only, operating at an optimum pressure of approximately 3 3.5 bar, in order to produce a fine penetrating spray.
Where a split dose application is recommended within the water volume range of 100-170 litres/hectare then the rate of adjuvant is reduced to 1- 1.5 litres/hectare respectively.

Compatibility
Mixes
Provided that all product recommendations are followed, BENTA 480 SL can be used in two way mix with a suitable adjuvant for use as directed in dwarf French beans and Tropotox®1 (PCS No. 03525), for use as directed in peas. See relevant sections for definition of formulations covered.
Apart from the above permitted products, used as directed, no other products should be tank mixed with BENTA 480 SL or severe crop damage can result.
All tank mixes should be used immediately after mixing.