Roundup vs Crossbow vs ?

[Carey]

Actually, I was thinking that was a deal! most of the places we have checked have Milestone for over $20 more! Luckily we have only needed it for the guava...but it does work VERY well on the guava, something that the others did not....

[unknownjulie]

How much of the milestone did you use on the guava and how exactly did you use it?

[Carey]

We used less than a cup, on the one humongous multi-stump (over 3'dia of twisted combined trees), one normal 8"dia tree & many, many root running sprouts...but the stump was more than one app to totally kill, finally using a constant stream on the saw blade while cutting the bugga (and how we cut the tree...had tried cross-cutting the top & treating the stump, slashing the side & treating, still regrew).... the smaller runners, we painted the whole thing... still get a couple of runners a year, but they are no longer from the main stump-cluster & i usually try to dig out the root....

The rest of the quart we gave to our farming neighbor...as the guava was our achilles heel (but probably should have kept a little for pilau maille...but that is an easier kill, once the main stem/root is found)

[unknownjulie]

OK, thanks. I'll use up the crossbow and go from there. The trees did appear fairly dead today. I am soooo glad I left a lot of jungle on my lot because I can see that this could all become a fulltime job. I am just leaving the bulldozed rock where the D9 went and hoping this will drastically reduce anything growing there.

[rbonplaza]

Ed checked Garden Exchange- They want $126 for a quart. We've used it now on about 10 trees- Albizia and Umbrella, including one huge Albizia (about 60', 8-10 ft diameter.) Working well so far. We pretty much followed the video referenced earlier from UH- drilled four holes 1/4" x 3" and injected 1cc in each hole. At this rate, a quart will cover a lot of trees! That's about $.38 per tree.

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Originally posted by Carey

Actually, I was thinking that was a deal! most of the places we have checked have Milestone for over $20 more! Luckily we have only needed it for the guava...but it does work VERY well on the guava, something that the others did not....

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[rbonplaza]

Carey, if you need a little more, let us know. Doubt we'll need the whole quart we bought. The albizias are defoliating pretty quickly- just hope they don't recover. I'm putting photos on the Friends of Punaweb yahoo group.

Ralph & Ed.

The rest of the quart we gave to our farming neighbor...as the guava was our achilles heel (but probably should have kept a little for pilau maille...but that is an easier kill, once the main stem/root is found)
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[Carey]

Hi guys & thanks. We really do not have a need for the Milestone, as our trees are now much more manageable species...& Milestone is more than a little overkill for pilau maile....I just really wish I could blink the stuff away, instead of finding the main root for each one, but I am pretty sure I would need to do that even with Milestone for the pilau maile...

[rbonplaza]

We haven't encountered pilau maile yet, thankfully. Wish we had learned of Milestone five years ago. Been fighting back the albizia keike from the mother tree since we got here. Finally the big one looks like it's slowly going.

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Originally posted by Carey

Hi guys & thanks. We really do not have a need for the Milestone, as our trees are now much more manageable species...& Milestone is more than a little overkill for pilau maile....I just really wish I could blink the stuff away, instead of finding the main root for each one, but I am pretty sure I would need to do that even with Milestone for the pilau maile...

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[Guest]

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Originally posted by peteadams

Crossbow is triclopyr plus 2,4-D. Triclopyr is a very effective systemic for woody plants. Roundup, while a broad spectrum herbicide, seems most effective on grasses, but may have some effect on woody plants at high concentrations. At the nursery to control guava we use Remedy which is pure triclopyr. Paint or spray stumps and bark immediately after cutting the guava. More concentration is undoubtedly better, but gets expensive when applying the straight product. We usually spray at the usual 1.5-2% dilution for economy, and it's generally pretty effective, but we always expect to revisit looking for any sprouts from the stump or adjacent roots.

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Good for you, you must work for Monsanto. Good luck with your cancer

[Guest]

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Originally posted by peteadams

Thanks for the tip about Milestone. I'm going to look into it. The typical tank mix we use for the garden paths and beds is glyphosate and oxyflurofen under the Goal tradename. It has several values for us. First of all it has both pre and post emergence capability. Second, it's a foliar contact herbicide, not a systemic so we feel more confident spraying weeds closer to the valuable plants. It is very effective on broadleaf weeds and keeps their seedlings down for at least a couple of months. Interestingly, Goal is also labeled for many commercial crops in Hawai'i including coffee, cacao, citrus (nonbearing), papaya, guava(!) and taro (dryland), possibly because it is a non-systemic.

Do you have any napalm?

We have a constant influx of weed seed from the many neglected or abandoned properties around here. Since the area had many relatively large sugar cane fields, there are many open fields where the fastest growing and most tenacious broadleaf weeds flourish. We also have a lot of inherited california grass and honohono "grass" that the glyphosate/Goal mix effectively kills. Remedy also works very well on honohono and maile pilau (the "vine" or Paederia scandens).

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