Oh dearie me, the instructions.
Mine says 10l per ha as the maximum dose for rhodies (that is at 360 g/l).
My honey jars are just shy of 300ml a little short of the neck (so shoulder is a bit subjective) and over 300ml to the neck. So need to be a bit more prescriptive about 250ml for those people who cannot make 1:1 sugar syrup or 3.2% oxalic, I feel.
I know Glycophosphate does break down relatively quickly into 'harmless' components
Not so true as you would be led to believe. Soon becomes inactive as a herbicide (so safe to plant other crops), yes, but the metabolites from this initial breakdown are not so quickly eradicated and are not quite as harmless as made out in years-gone-by advertising. Ask the Argentinians about the effects, of glyphosate use, on the unborn child. A revelation since the use of roundup resistant GM crops, which a lot of people now wish had never been introduced by the 'frankenstein' merchants.
Try this link among others:
http://www.i-sis.org.uk/argentinasRoundupHumanTragedy.php
It starts like this:
In 2002, two years after the first big harvests of RR soy in the country, residents and doctors in soy producing areas began reporting serious health effects from glyphosate spraying, including high rates of birth defects as well as infertility, stillbirths, miscarriages, and cancers [2]. Environmental effects include killed food crops and livestock and streams strewn with dead fish [2, 3].
Further, excessive use near a waterway is certainly discouraged as glysophate is
'toxic to aquatic`organisms, may cause long-term adverse effects in the aquatic environment'.
So it may be relatively benign, but is not entirely safe.
add washing up liquid there is your surfactant to break surface film
Beware. Glysophate comes as an acid amine salt and has a pH of around 4-5, so adding washing up liquid, which may contain ammonia, may not be as advisable as at first thought...
Half life in soil is quoted as between 2 and 174 days - that means it could be gone in 20 days or may be present for a very long time. Quite a range, that!
The 'clinic ace' which I use has an additive to break down waxy surfaces to gain entry to the plant; some others have none and some have different methods of improving plant take-up of the active ingredient.
The concentration is 360 g/l but some are available at 450 g/l, so certainly need to read the dilution instructions. Shop-bought ready to use sprays are normally around 10 g/l and are in the same ball park price-wise (volume for volume), but do generally have a delivery system included. That is one very expensive delivery system!
[Would have posted earlier but went to sleep (and missed my wife's phone call at a quarter to midnight).]
RAB
