April May June. Or any growing month when grass does not shield target weeds and use too much chemical. Don't know about tractor but an ATV pulled size cost about £2K. Widths much over 3 m could bridge on uneven ground so a gang is way forward. Also bare in mind that what gets squashed by big tractor tyres doesn't get treated.
Weed wiping is an art form not a science!
No .Romneymarsh, do you know what (if any) certificates you need to hold to operate a weedwiper or, more importantly, to get the chemical for putting in it?
I asked the bloke on the Logic stand at Scotsheep and he didn't know!
I have never found any reference to the use of weed wipers and certificates. I put Thistlex in mine 750ml in 20 L drum with a good dollop of Fairy liquid. 2.5 M Rotowiper. I bought it about 20 years ago have worn out 3 carpets and bought a second on eBay last years for spares. A chemical thistle spud is a good term for it.
Grazon 90 and Dow Shield have been replaced by Grazon Pro and Dow Shield 400. Grazon Pro is approved for use through a knapsack but none of our products are currently approved for use through a weed wiper.I've been having a google.... very dangerous thing.....
found this snippet from a natural England booklet in 1999
Herbicides with label recommendations which include use through a weedwiper: Roundup, and two which have off label approval - Dow Shield and Grazon 90. Table 7.1 provides further details. However, any herbicide can be used in a weed wipe machine provided it is not specifically prohibited from use by this method on the product label and as long as other conditions are complied with. Subject to this, reduced volume application via weed wipes of herbicides is acceptable up to 10 times the recommended maximum concentration on the label subject to compliance with carrying out a comprehensive COSHH assessment and that paragraph 146 of the Code of Practice for the safe Use of Pesticides on farms and holdings (MAFF/HSC 1998) is complied with, ie pesticides should not be applied with lower volumes of water than the label recommends for that dose if the label i) prohibits reduced or low volume spraying ii) requires the use of Personal Protective Equipment (PPE) when the pesticide product is diluted to the minimum volume rate recommended on the label for that dose or iii) has one of the following hazard warnings “corrosive”, “very toxic” or “toxic” or carries the phrase “risk of serious damage to eyes”.
does it still ring true?
Grazon 90 and Dow Shield have been replaced by Grazon Pro and Dow Shield 400. Grazon Pro is approved for use through a knapsack but none of our products are currently approved for use through a weed wiper.
Off-label indicates that an extension of minor use authorisation (EAMU) has been granted. This application is usually submitted to the regulatory authority (CRD) by a third party to extend a product's approval for use on alternative minor crops; for alternative application methods or for the control of minor weeds. Use is entirely at the growers own risk as crop safety or efficacy may not have been fully evaluated.no 'off label' use then? Tbh I'm not sure exactly what off label means when referring to herbicides..... perhaps you could explain?
it says in the above snippet that unless it specifically excludes the use of a weed wiper and you can use it without falling foul of the specific safety requirements then you're hot to trot.