Even in small amounts?
2007-08-31 09:33:18 · 7 answers · asked by Anonymous in Home & Garden ➔ Garden & Landscape
No, I wasn't in any way trying to hit the tree, but I sprayed some nearby trees so much, I was worried I would hurt the tree.
2007-08-31 09:49:03 · update #1
Not nearby trees, I mean WEEDS. I've got the damage of the tree on my mind.
2007-08-31 09:49:51 · update #2
Yes some products can last in the soil even though they are advertised as being inactive once they are adsorbed onto soil particles. Evidence with long term studies is showing that plants are impacted with long term, low level exposure.
It isn't just what blew on to the tree but also what remains mobile in soil within the tree's root range.
Besides this there is the impact to the soil biota. "Some soil invertebrates including springtails, mites and isopods are also adversely affected by glyphosate. Of nine herbicides tested for their toxicity to soil microorganisms, glyphosate was found to be the second most toxic to a range of bacteria, fungi, actinomycetes and yeasts" This explains why it inhibits nitrogen fixation in soil. All of these creatures are necessary for the plants to acquire nutrients from the soil. Virtually all plants of economic importance form mycorrhizae, a symbiotic union of beneficial soil fungi and feeder roots.
http://www.pan-uk.org/pestnews/actives/glyphosa.htm
http://cropsoil.psu.edu/sylvia/mycorrhiza.htm
To help restore your soil inoculums can be purchased
http://www.mycorrhiza.com/
http://www.tandjenterprises.com/tandj_lawnworms.htm
“In the US it has been suggested that herbicides, including glyphosate reduce winter hardiness in trees and their resistance to fungal disease(22). It has been suggested that damage to maple trees increases during the second year following treatment with glyphosate, and that clover planted 120 days following treatment showed reduced nitrogen fixation and growth. This implies that glyphosate which is bound to soil particles can remain active and may be released from soil and taken up by plants(23). The US-EPA has also stated that many endangered plants may be at risk from glyphosate use(24).”
2007-08-31 12:51:54 · answer #1 · answered by gardengallivant 7 · 1⤊ 0⤋
I agree. I do it all the time, twice a year around my Pecan trees. I use Roundup 100% and dilute it per instructions.
BUT, do not spray around the tree if there is any bark ripped off, like from a weedwhip or mower hitting it. To kill a large tree, drill a 1./2" hole in the trunk and fill it with 100% killer, but don't do it to your neighbors trees! ha ha.
2007-08-31 17:10:55 · answer #2 · answered by billy brite 6 · 1⤊ 0⤋
How large is large ? If it is over 4-5 inches across, don't worry about it, the tree will be fine. That is of course assuming you are not standing there trying to hit the tree.
2007-08-31 16:42:24 · answer #3 · answered by Michael C 5 · 1⤊ 0⤋
No. I wouldn't think about it another minute. Weed killers normally enter through the leaves of the weed and work their way to the roots. Unless you have a 100 gallons and a helicopter I doubt you could hurt a large even it you were trying...
2007-08-31 17:16:49 · answer #4 · answered by gimpalomg 7 · 1⤊ 0⤋
It depends on many variables, the chemical, outdoor temp, nozzle (jet or mist), size of tree and most important type of tree. Some, like maples, will croak if you even say the words 'weed killer' too loudly. You just never know, so be careful. RScott
2007-08-31 17:13:16 · answer #5 · answered by Anonymous · 2⤊ 0⤋
No, don't worry about it. The only thing that may affect a large tree is a very large application of sodium chlorate.
2007-08-31 16:39:58 · answer #6 · answered by Anonymous · 1⤊ 1⤋
No.
2007-08-31 16:42:32 · answer #7 · answered by JAN V 2 · 1⤊ 0⤋