A non-selective herbicide for the control of gorse, blackberry and other broadleaf weeds in pasture, forestry and non-crop areas.
ctive Ingredient: 600g/kg metsulfuron-methyl
Chemical Group: Sulfonylurea
Formulation: Water dispersible granule
Compatibility: Do not mix PRISM with hormone type products such as 2,4-D and MCPA when treating pasture areas as severe pasture damage will result.
Prism is a GROUP B sulphonylurea herbicide (non-hormonal and non-volatile). Prism may be used with care in situations where a hormone type herbicide may cause unintentional damage through vapour movement. Prism should be applied to actively growing weeds during late spring to early autumn. Prism is rapidly absorbed into the foliage of plants and is translocated within the plant where it rapidly stops cell division. The symptoms in treated plants is a gradual reduction in vigour until plants die. It is effective on weeds such as gorse, blackberry, ragwort, thistles, sweet brier, matagouri, hawthorn, barberry, bracken, broom, manuka, tauhinu, fennel, horehound, inkweed, tutu, willows, wild ginger, old mans beard, privet and many broadleaf weeds.
WEEDS CONTROLLED: Barberry, Blackberry, Bracken, Broom, Fennel, Gorse , Hawthorn, Horehound, Inkweed, Manuka, Matagouri, Old mans Beard, Privet, Ragwort, Thistles, Sweet brier, Tauhinu, Tutu, Wild ginger, Willows.
WEEDS NOT CONTROLLED: Black nightshade, Woolly nightshade, Boxthorn and many grass species including Browntop, Cocksfoot, Kikuyu, Pampas and Paspalum.
AERIAL APPLICATION: Use an experienced, licensed aerial applicator. Apply using the half overlap flying technique and a nozzle configuration and flight pattern that will ensure good canopy penetration and full coverage of sprayed plants. Poor coverage will result in significant regrowth. After application, it is essential to follow up with management practices such as slashing, crushing, burning of bushes and over-sowing of pasture species.
Note: Aerial application is recommended for use in non-crop areas only.
MIXING: Add the required amount of PRISM directly into a half-filled spray tank. Agitate before and during application.
COMPATIBILITY: Do not mix PRISM with hormone type products such as 2,4-D and MCPA when treating pasture areas as severe pasture damage will result.
SPRAYER CLEANUP: In order to avoid subsequent injury to crops, ensure that immediately after spraying all traces of PRISM are removed from mixing and spray equipment using the following cleaning method:
First drain the tank, then flush the tank, boom and hoses with clean water for a minimum of 10 minutes. Then:
IT IS AN OFFENCE FOR USERS OF THIS PRODUCT TO CAUSE RESIDUES EXCEEDING THE RELEVANT MRL IN THE NEW ZEALAND (MAXIMUM RESIDUE LIMITS OF AGRICULTURAL COMPOUNDS) FOOD STANDARDS.
WITHHOLDING PERIODS: Do NOT graze treated areas with dairy cows within 3 days after application and other stock within 1 day of application.
Resistant Weeds Warning:
Prism is a member of the sulfonyl urea group of herbicides. Naturally occurring biotypes resistant to sulfonyl urea herbicides are known to exist. These resistant weeds will not be controlled by Prism or other sulfonyl urea herbicides. To prevent or delay the development of resistant weeds use Prism in tank mixes (if appropriate) and/or rotations with herbicides having different modes of action effective on the same weed species. Since the occurrence of resistant weeds is difficult to detect prior to use, Adria New Zealand Limited accepts no liability for any losses that may result from the failure of Prism to control resistant weeds.
Prism is registered pursuant to the ACVM Act 1997, Approval No. P7679
Refer to the recommendations per weed type in the table below.
|WEED||DOSAGE RATE||DOSAGE RATE||DOSAGE RATE||DOSAGE RATE||REMARKS|
|Aerial and boom spray g/ha||Handgun g/ 100 litres||Knapsack g/10 litres||Mistblower g/10 litres|
|Barberry||-||35||5||10||Apply from November to May. The treatment of single bushes less than 3 metres high will produce the best results.|
|Blackberry||200-300||20-35||5||10||Apply before leaf discoloration in the period from November to June. Best results will result from January to May treatments. Use the higher rate on the harder to kill types of blackberry that occur in areas which include Northland and the East Coast of the North Island. Where possible, use ground spray equipment. Treated bushes may be burnt, crushed or slashed once the canes are brittle enough. Intensive stocking of treated areas with goats or sheep and oversowing will assist in the control of regrowth. Spot spray regrowth two years after initial treatment.|
|Bracken||170||35||5||10||Apply in January to June when fronds are unfurling and before frost causes browning. Best results are achieved by spraying the regrowth fronds that develop after bracken has been burnt.|
|Broom||-||35||5||10||Apply to actively growing Broom in the period from November to May. Add a silicone-based penetrant at recommended rates.|
|Broadleaf weeds||50||5||1||2||Apply to actively growing weeds.|
|Fennel||-||5||1||2||Apply to actively growing weeds.|
|Gorse||Establishe d: 500 Seedling: 170||20 -||5 -||10 (U.L.V) -||Add a silicone-based penetrant at label rates (essential for good control). PRISM can be applied at any time of the year, but best results are achieved during periods of active growth. Do not apply under extreme conditions e.g. severe drought or snow. Ensure complete coverage. Use a minimum of 300-400 litres of water per hectare when applying by helicopter. (See section on Aerial application).|
|Hawthorn||-||35||5||10||Apply from November to March. The treatment of single bushes less than 3 metres high will produce the best results.|
|Horehound||75||-||-||-||Use only on areas where pasture damage is of no concern, e.g. Sheep camps and waste areas. Apply to actively growing weeds.|
|Inkweed||50||25||5||10||Apply to actively growing weeds.|
|Manuka||-||30||5||10||Complete coverage of all parts of the bush is essential for effective control.|
|Matagouri||170||25||5||10||Apply to actively growing bushes in the period from December to April.|
|Old Man’s Beard||170||35||5||-||Apply to actively growing weeds November to May. The addition of a silicone-based penetrant at recommended rates is essential for good control.|
|Privet||-||35||5||10||Apply to actively growing weeds during Spring or Autumn.|
|Ragwort||-||2.5-5.0||1||-||Apply to actively growing Ragwort from the rosette stage to late flowering. Use the higher rate on multi-crown plants. Direct spray to the centre of plants, as complete coverage is not essential. On flowering plants, application before flower senescence will ensure that seed will not be viable. CAUTION: Treated ragwort plants may become more palatable to stock. To avoid poisoning, remove stock from treated areas until plants have died off.|
|Thistles||-||2.5-5.0||1||-||Apply to actively growing thistles.|
|Sweet Brier||170||35||5||10||Apply to actively growing plants, ensuring complete coverage, in the period from November to April. The addition of a silicone-based penetrant at recommended rates is essential for good control.|
|Tauhinu||300||-||-||-||The addition of a silicone-based penetrant is essential for good control. Apply to actively growing Tauhinu during active growth. Larger bushes may not be controlled.|
|Tutu||-||25||5||10||Apply to actively growing weeds.|
|Wild Ginger||-||25||5||10||Apply during the spring and until late Autumn.|
|Willows||-||35||5||10||Ensure complete coverage of trees. Apply in the period from November until April.|
|FORESTRY USE||ONLY for use on Pinus Radiata pre-plant (2 months prior to planting). To control Bracken, Blackberry and seedling gorse apply PRISM at 170g per hectare.|