Other specific restrictions :
Users must consult the appropriate water regulatory body (Environment Agency/Scottish Environmental Protection Agency) before using the product near water and must obtain their agreement before using this product to control aquatic weeds. The maximum concentration of active substance in treated water should not exceed 0.2 ppm. When applying through rotary atomisers, the spray droplet spectra produced must be of a minimum Volume Median Diameter (VMD) of 200 microns. Weed wipers may be used in any recommended crop where the wiper or chemical does not touch the growing crop. When using weed wipers, the maximum concentrations used must not exceed the following: Weed wiper Mini 1:2 dilution with water Other Wipers 1:1 dilution with water For stump application the maximum concentration must not exceed 200ml product per 1.0 litre water.
Mixing and spraying
Roundup ProBio mixes readily with water and can be applied in spray volumes ranging from 10-400 l/ha using tractor mounted, knapsack, rotary atomisers and hand-held sprayers. Specialised application equipment such as weed wipers, stem injection and spot gun applicators may be used where indicated. Correctly calibrate all sprayers under field or use conditions prior to application.
a) Tractor mounted and powered hydraulic sprayers
These should be capable of applying accurately 80-400 l/ha within a pressure range of 1.5-2.5 bars (20-35 psi). Half fill the spray tank with clean water, start gentle agitation, and then add the correct amount of Roundup ProBio . Top up the tank with water to the required level. To avoid foaming do not use top tank agitation. Use of a defoamer may be necessary.
Medium Volume application (150-300 l/ha)
Avoid high water volumes (>300 l/ha) which may lead to run-off from the treated vegetation, resulting in reduced control. Low drift nozzles such as air induction and pre-orifice types producing a medium or coarse spray (BCPC definition) should be used to minimise the risk of drift.
Low Volume Application (minimum 80 l/ha)
Low volume application can be achieved by reducing pressure and the appropriate nozzle selection. Low drift nozzles which produce a medium spray quality (BCPC definition) should be used to minimise the risk of drift.
b) Knapsack sprayers
Recommended delivery range is 80 - 250 l/ha. Half fill the spray tank with clean water, add the correct amount of Roundup ProBio and top up with water. Fill April 2103 according to best practice as given on the CPA’s Voluntary Initiative website (www.vountaryinitiative.org.uk) When used at a walking speed of 1 metre/second to apply a swath of 1 metre width, most knapsack sprayers fitted with a Hypro AN 2.0 or similar nozzle deliver approximately 200 l/ha spray volume (or 10 l per 500 m2). To apply 3.0 l/ha of , therefore, use a 1.5% solution, i.e. 150ml Roundup ProBio made up to 10 litres. Similarly, knapsack sprayers fitted with low volume nozzles such as Hypro AN 1.0 typically deliver approximately 100 l/ha spray volume. To apply 3.0 l/ha Roundup ProBio in this case use 3.0% solution.
c) Rotary Atomisers
Roundup ProBio may be applied neat through specialised ULV applicators which have drift reducing systems or at a spray volume of 10-40 l/ha through conventional rotary atomisers. Hand-held machines can be used to apply a spray volume of 10-40 l/ha, e.g. Herbi and Herbaflex. Tractor-mounted rotary atomiser boom sprayers are suitable for use in forest situations to apply a spray volume of 10- 40 l/ha. When rotary atomisers are used to apply Roundup ProBio ensure that the droplet diameter falls within the range 200-300 microns for all uses. Stir the correct amount of Roundup ProBio to control the particular target species into the sprayer bottle half filled with clean water. Top up with water, close the top and shake gently to ensure good mixing.
d) Weed Wipers
For ropewick applicators use a concentration of 1 part Roundup ProBio to 2 parts of water and add a water-soluble dye if required. Care should be taken to avoid dripping onto wanted vegetation. For new generation weed wipers, use 1part Roundup ProBio to 10 or 20 parts of water or as directed by manufacturer’s instructions. A list of machines is included in the Company Advisory section at the end of this label.
e) Cut Stump Applicators
For cut stump treatment an Enso attachment to rotary saws may be used. This technique is specific to scrub clearance in Forestry. A suitable water soluble dye may be used.
f) Stem injection
Use a hatchet to cut one notch in trees up to 10cm diameter and two to three notches in trees above 10cm diameter. Use 2 ml of undiluted Roundup ProBio per notch. Specialist stem injection equipment can be used to inject 2 mls Roundup ProBio into hollow stems such as Japanese Knotweed and Giant Hogweed.
g) Spot Gun Applicators
Spot gun applicators are for the treatment of individual weeds. Apply 5 ml of spray to target weed, using a narrow cone TG-3 or TG-5 nozzle.
When used in paddocks keep livestock out of treated area until treated Ragwort or other poisonous weeds have either been removed or died down completely.
Boat mounted sprayers
For use in aquatic situations. Prepare sprayer as for knapsack sprayers (Section b above). Calibrate and spray at the lowest speed possible. Always apply against the direction of any current.
Compatibility:
Roundup ProBio is physically compatible with some other pesticides. For up to date information on compatible products contact Monsanto UK Limited (tel: 01954 717575) or visit www.monsanto-ag.co.uk .Roundup ProBio is compatible with Mixture B NF (ADJ 0570). Where conventional hydraulic sprayers are being used Mixture B NF may be added to the spray tank solution, at a rate of 2% of the final water volume, for all pre-plant and post-plant directed sprays only. DO NOT APPLY WITH MIXTURE B NF TO EDIBLE CROPS, GRASSLAND OR AQUATIC WEEDS. Do not tank-mix Roundup ProBio when using rotary atomiser sprayers. N.B. Maintain continuous agitation when using Roundup ProBio in a tank-mixture. For knapsack sprayers: mix thoroughly and use immediately when using Roundup ProBio in tank mixture. Always consult manufacturers' recommendations before use.
General Information
Roundup ProBio herbicide is an advanced formulation containing glyphosate. Roundup ProBio is taken up by foliage and translocated to underground roots, rhizomes and stolons, providing control of both annual and perennial grasses and broad-leaved weeds. Roundup ProBio is rapidly adsorbed onto particulate matter in soils and water and is quickly degraded by the micro-organisms present in soil and aquatic bottom sediments. Until degraded, the active ingredient in Roundup ProBio, glyphosate, is practically immobile in soils and is, therefore, unlikely to contaminate groundwater. Roundup ProBio is a glyphosate formulation which, having no hazard classification, offers a high standard of operator safety. To maximise the intrinsic safety of Roundup ProBio to operator, consumer and environment, the label recommendations and the DEFRA/HSC/NAW publication "Code of Practice for Using Plant Protection Products” of January 2006, should be adhered to.
Symptoms on the weeds
Symptoms of treatment are generally first seen 7-14 days, or longer, if growth is slow after spraying. Leaf symptoms take the form of a reddening then yellowing of the foliage and are first seen on the grass weeds but take longer to appear on broadleaved weeds. Reaction of nettle is slow. IMPORTANT: To obtain optimum weed control, weeds must be left undisturbed with no further treatment or cultivation for 7 days after application. Allow 2-3 weeks for symptoms to develop then re-treat any unaffected plants using spot treatments. A covering of dew may reduce efficacy where run-off occurs. Reduced control is likely where weed growth is impaired by natural senescence, drought, high temperature, a covering of dust, flooding or severe/prolonged frost at, or immediately after application. For aquatic weed control, on reeds and grasses leaf symptoms usually appear within 14-21 days of spraying in the early autumn. Complete foliage desiccation usually occurs 30-40 days after spraying. At this stage the reeds can be cut and removed. During cold conditions leaf symptoms may not appear before natural dieback but no growth will occur in the season following spraying.
Weed resistance strategy
Glyphosate, the active ingredient in Roundup ProBio is a Group H herbicide based on the mode of action classification system of the Herbicide Resistance Action Committee. Under Best Practice there is a low risk for the development of weed resistance to Roundup ProBio. There are no known cases of weed resistance to glyphosate in UK. Strains of some annual weeds have developed resistance to glyphosate in some parts of the world leading to poor control. A strategy for preventing and managing such resistance should be adopted. This should include integrating herbicides with a programme of cultural control measures and /or active ingredients with a different mode of action.
