Orange Tree Sprayed with Roundup`

nztack, Feb 23, 3:49pm
Our gardener got a bit trigger happy with the RoundUp and decided it would be a good idea to spray the ivy around the base of our beautiful 30 year old orange tree planted by my Grandparents. I didn't realise at the time as I was at work so didn't get the opportunity to charcoal it, however the leaves have turned orange and it's looking rather sickly. Does anyone have any ideas for how I might save it?

maclad, Feb 23, 4:05pm
How long ago did this happen, did he spray the foliage? A citrus tree of this age should be able to withstand roundup in a reasonable dose partly because of the nature of the leaves. If it has been affected then I doubt you will save it, lots of water a good feed and SACK THE GARDENER.

nztack, Feb 23, 4:32pm
Thanks Maclad, about 5 months ago. Here is the aftermath https://drive.google.com/file/d/0B3d5-4Kf8BixeWktYnJPb3liekVHV2NNb016dDZhVjFGT0pB/view?usp=sharing
It's lost about 50% of it's branches and the remaining leaves and branches are still slowly yellowing and dying away!

maclad, Feb 23, 5:05pm
Cannot access your pics but perhaps it has borer. Can you find any very fine sawdust on the branches, perhaps around holes. 5 months is far too long for Roundup to take effect. Look lower down. DID YOU SACK THE GARDENER?

hammerman1, Feb 23, 6:12pm
Well, allowing roundup on your property at all is a case of ye reap what ye sow.

dibble35, Feb 23, 6:17pm
Sack the gardener cause if he was any good he should know that round up wouldnt kill Ivy

lythande1, Feb 23, 7:07pm
Don't panic. It's pretty hard to kill a tree, and roundup is pretty useless.
It will recover.
My grapevine got drift once, looked all crinkled and sad for a season but came back vigorously.

maclad, Feb 23, 7:11pm
What nonsense

skifflebar, Feb 23, 11:43pm
Better still, bury the gardener at the base of the tree. Or place him piece-meal like at the drip line.
Your tree will then recover. Hopefully

peacebird15, Feb 24, 1:46am
make a big strong sugar and water mix, inject it into the soil round the tree

maclad, Feb 24, 7:18am
Seen your pics, that tree is in terrible condition and doubt very much that Roundup is the cause. Roundup will kill from the tips down. Your tree is dying from the inside out,if it was roundup the leaves would die long before the branches. It is probably borer or perhaps it is just that the tree has lived it's life.

hammerman1, Feb 24, 8:53am
So you are happy for glysophate to leach into the water table and help destroy our bees. No bees, no humans. Grow half a brain.

misterwoody, Feb 24, 8:53pm
x1
I'm a retired citrus technical adviser with over 30 years in the the citrus industry improving citrus for export and I can assure you that Round-up will NOT kill your citrus tree and it will bounce back it that is the cause of your problem, although I doubt it. It is more than likely under stress. It could be borer, as previously mentioned, but its age and the current hot dry weather will also be contributing. It is in need of some extensive TLC. June/July prune out all deadwood within the canopy and any branches growing back into the canopy. Create a vase shape. The reason for doing it at this time of year is that there are no borer around. This pruning will help to stimulate new growth. Spray the grass under the tree from the trunk out to the drip zone (outer edge of the tree canopy) WITH ROUND-UP. This is done in most commercial Citrus Orchards and will not harm the tree. The feeder roots of citrus are within the top 150mm of the soil. Anything else growing under the tree will deprive it of essential nutrients Once the grass dies off cover the area with a good mulch. In spring, September/October once ground temperature is above 14deg.C apply several hand fulls of Citrus Fertilizer to the area under the tree, not just around the drip zone, keeping away from the trunk. Keep the soil moist, not soaking wet as citrus does not like wet feet. Moisture stress i.e. too much water or too little water can cause yellowing of the leaves, leaf drop and can also contribute to die-back. You should find that over the following 12 months that the tree will show significant improvement in both health and fruit quality. If the tree has not been setting very many fruit it may require addition dressings of Potassium. Hope this helps.

peacebird15, Feb 24, 9:54pm
Thank you! It not my tree but thats really interesting

fxx99, Feb 25, 10:13pm
I bought some weedkiller from Bunnings with active ingredient glysophate (not Roundup) and I kid you not, I sprayed some but no much on a very healthy pitosporum that was about 10 metres high with a fairly big trunk. It died within 6 months after accidentily spraying it.
Are you sure your gardener was using Roundup and not some other glysophate weedkiller?

ira78, Feb 25, 10:24pm
That's like asking, Are you sure you put table salt on your chips, not sodium chloride? Glyphosate is the active ingredient in most roundup formulas.

pauldw, Feb 25, 11:17pm
Some of the "Weed Weapon" range add some Saflufenacil to the Glyphosate.

fxx99, Feb 26, 2:48pm
Same ratios ? I have found roundup pretty wossy compared to some of that generic glysophate weed killer and also a lot cheaper.

dibble35, Feb 26, 6:12pm
All the roundup/glyphoste type brands i have looked at have the active ingredient at 360gm/L. So all should be working the same. I just buy the warehouse branded one, same ingredients, half (or less) the price

les6, Dec 18, 8:46am
looks like the hody prunning with associated coat hangers has lewt all the borer in via the exposed cuts is doing the harm rather than the spray?