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Diquat 200


Product:

APVMA Code :66120

Active Constituent(s):

200g/L diquat

(present as diquat dibromide monohydrate)

Registered For:

 

 Commercial use

 Domestic use

Overview: For pre-harvest crop dessication and the control of a wide range of broadleaf weeds in certain crops.

Chemical Group bipyridyl

Documents:

 MSDS (311.1 KB)

 Label (2.7 MB)


General Instructions

 

Uses

Cheminova Diquat 200 Herbicide is an aqueous solution of diquat, a non-volatile herbicide with unique properties. It very quickly kills green growth with which it comes into contact and is particularly effective against broadleaved weeds. It is inactivated on contact with the soil and crop roots and seeds below the soil remain unharmed. It can be safely applied around bushes and trees which have no green bark. It is non-volatile, easily mixed with water and active at low concentrations.

 

Resistant Weeds Warning

 

Cheminova Diquat 200 Herbicide is a member of the bipyridl group of herbicides. The product has the inhibitor of photsynthesis at photosystem I mode of action. For weed resistance management, the product is a Group L herbicide.

 

Some naturally-occurring weed biotypes resistant to the product and other inhibitors of Group L herbicides may exist through normal genetic variability in any weed population. The resistant individuals can eventually dominate the weed population if these herbicides are used repeatedly. These resistant weeds will not be controlled by this product or other inhibitors of Group L herbicides. Since the occurrence of resistant weeds is diffi cult to detect prior to use Cheminova Pty. Ltd. accepts no liability for any losses that may result from the failure of this product to control resistant weeds.

 

Mixing

 

Add the required quantity of Cheminova Diquat 200 Herbicide to water in the spray tank and agitate to give even mixing. Agitate again if left standing. Use clean water only, as suspended soil particles in dirty water will interfere with herbicidal action.

 

WETTING AGENT

Cheminova Diquat 200 Herbicide contains no wetting agent and a non-ionic wetting agent must be added to the spray mixture unless otherwise specified. Add Agral at the rate of 200 mL/100 L or Wetter 1000 at 160 mL/100 L of prepared spray unless otherwise specified.

 

Application

 

For best results, an even and complete coverage and good penetration of the spray into the target foliage is necessary. Best results will be obtained when application is made in dull weather or at the end of the day. Cheminova Diquat 200 is rapidly absorbed and is not affected by rain falling shortly after application.

 

Application Rates

Use the higher rates specified in the Directions for Use for dense or weedy crops. For application to seedling weeds, Cheminova Diquat 200 Herbicide is generally recommended at 1.4L/ha and Paraquat 250 Herbicide at 1.2L/ha. Use Cheminova Diquat 200 Herbicide at 2.8 to 4L/ha and Paraquat 250 Herbicide at 1.6 to 3.2L/ha when weeds are at the older stages of growth. Paraquat 250 Herbicide is preferred where grasses are dominant and Cheminova Diquat 200 Herbicide where there are mainly broadleaf weeds.

 

Boom Spraying

A boom sprayer fitted with flat fan nozzles is preferred to ensure even coverage and to minimise drift. The boom should be set at sufficient height above the crop to provide a complete double overlap of the flat spray pattern. Spray drop arms on booms are useful for dense crops such as potatoses. A minimum  spray volume of 100L/ha is recommended. Aim for a spray quality in the fine to medium range, ie a VMD droplet size of 200 to 250 µm. Generally a flat fan nozzle operated at 200 to 300 kPa is preferred.

 

High Volume Spot Spraying

Hand-held equipment use 250ml of product per 100 L of water and spray to visible wetness (about 700 to 1000L/ha). Use 50ml product plus 30ml Agral per 15 litre knapsack.

 

Aerial Application

Flying height, pressure, nozzle size and positioning on the aircraft should be such as to minimise spray drift. Apply 30 to 60 L of spray per hectare. Avoid spraying in high winds or under temperature inversion conditions. Wash any spillage during filling of the aircraft and make sure there are no leaks in the spraying system. Inspect the aircraft regularly for signs of corrosion and ensure the paintwork is in good condition.

 

Caution - Use By Aircraft

Although this product is no different in drift behaviour from other chemicals, it has a rapid spotting effect on green foliage and, as with all herbicides; special care must be taken to avoid drift onto adjacent crops. Aircraft operators must not apply during periods of thermal (temperature) instability, and should avoid wind conditions and flying heights conducive to drift.

 

Weed Control In Row Crops, Vegetables And Market Gardens

 

Pre-planting and pre-crop emergence:

To control weeds in seed beds before sowing, or post-sowing seed crop emergence, apply as a blanket spray with this product using boom spray equipment or knapsack sprayers.

 

Post-emergence inter-row weed control:

Use shielded nozzles for rapid control of weeds in inter-row spaces of row crops, after crop seedlings have emerged, or when transplanted crops are established. Direct the spray so that it does not touch the crop.

 

Pre-harvest crop desiccation:

Green crop foliage and weeds can seriously interfere with harvesting operations of a number of crops.  This product can be used to facilitate harvesting by desiccating weeds, accelerating the drying of crops and reducing the moisture content of seeds. Drying costs are reduced, harvesting delays and associated risks are avoided.

 

WARNING

 

Markers - If possible, fixed markers should be used. Human markers are not recommended unless flaggers are protected by engineering controls such as vehicles with cabs.

 

Compatibility

This product mixes readily with Paraquat 250 Herbicide, the soil residual herbicides Atrazine granules, Diuron WG, Simazine Granules and other 200 g/L Paraquat products, where prolonged weed control is required as well as a quick knockdown.

 

Restraints

 

DO NOT apply with misting machines or CDA applicators.

 

DO NOT spray when weeds are under drought stress or when covered with dust or soil.

 

Grazing: DO NOT GRAZE OR CUT SPRAYED VEGETATION FOR STOCK FOOD FOR 1 DAY AFTER APPLICATION.

 

Harvest:

Cotton, dry beans, mung beans, asparagus, hops, orchards and vineyards, row crops, vegetables and market gardens, oats, wheat and winter cereals: - NOT REQUIRED WHEN USED AS DIRECTED

 

Lentils, chickpeas and faba beans - DO NOT HARVEST FOR 2 DAYS AFTER APPLICATION

 

Pigeon peas, canola,sunflowers, soybeans, sugarcane - DO NOT HARVEST FOR 4 DAYS AFTER APPLICATION

 

Rice - DO NOT HARVEST FOR 5 DAYS AFTER APPLICATION

 

Potatoes - DO NOT HARVEST FOR 7 DAYS AFTER APPLICATION

 

Sweet Potatoes - DO NOT HARVEST FOR 14 DAYS AFTER APPLICATION

 

Poppies: - DO NOT HARVEST FOR 16 DAYS AFTER APPLICATION

 

DO NOT USE TREATED WATER FOR HUMAN CONSUMPTION, LIVESTOCK WATERING OR IRRIGATION PURPOSES FOR 10 DAYS AFTER APPLICATION

 

Protection of livestock

Domestic pets and poultry - keep away from treated areas. Low hazard to bees. No special precautions are required.

 

Protection of wildlife, fish, crustaceans and environment

DO NOT contaminate streams, rivers or waterways with the chemical or used containers.

 

Safety Directions

 

Very dangerous. Poisonous if absorbed by skin contact, inhaled or swallowed. Will irritate the eyes, nose, throat and skin. Avoid contact with eyes, and skin. DO NOT inhale spray mist. When preparing spray and using the prepared spray wear cotton overalls buttoned to the neck and wrist, washable hat, elbow-length PVC gloves, face shield or goggles, and half-face respirator or disposable respirator. If clothing becomes contaminated with product or wet with spray, remove clothing immediately. If product on skin, immediately wash area with soap and water. After use and before eating, drinking or smoking, wash hands, arms and face thoroughly with soap and water. After each day's use, wash gloves and face shield or goggles, respirator and if rubber wash with detergent and warm water, and contaminated clothing.

 

Storage

Store in the closed, original container in a dry, cool, well-ventilated area. DO NOT store for prolonged periods in direct sunlight. Store in a locked room or a place away from children, animals, food, feedstuffs, seed and fertilisers.

 

Disposal

This containers can be recycled if it is clean, dry, free of visible residues and has the drumMUSTER logo visible.

 

Triple or preferably pressure rinse containers before disposal. Dispose of rinsate by adding it to the spray tank. DO NOT dispose of undiluted chemicals on-site. Wash outside of the container and the cap. Store cleaned container in a sheltered place with cap removed. It will then be acceptable for recycling at any drumMUSTER collection point or similar container management program site. The cap should not be replaced but may be taken seperately. If not recycling, break, crush, or puncture and bury empty containers in a local authority landfill. If no landfill is available, bury the containers below 500 mm in a disposal pit specifically marked and set up for this purpose clear of waterways, desirable vegetation and tree roots. Empty containers and product should not be burnt.

 

For refillable containers, empty contents fully into application equipment. Close all valves and return to point of supply for refill or storage.

 

Product details last updated on 07 Dec 2011

 

DISCLAIMER: This is not the DIQUAT 200  by Cheminova label. To view or print the label for this product, click the "MSDS/Label" tab at the top of this page. Always follow label instructions.

 

For specialist advice in an EMERGENCY only phone 1800 033 111, TOLL-FREE, ALL-HOURS, NATIONWIDE


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