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Selective herbicide usage

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Posted by cherax Syd NSW Aust (My Page) on
Thu, Nov 29, 12 at 13:38

Hello All....
I have a perplexing problem with Erharta (introduced grass) absolutely invading a sea of predominately bromelliads and aside from using diluted Roundup G2 wonder whether any people have ideas relating to selective destruction of monocots whilst leaving dicots and broms alive. I know that roundup diluted can be safe (conducting dilution trials) just interested in others experiences.
All thoughts are welcome

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RE: Selective herbicide usage

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Selective herbicide use is easy.

Roundup kills monocots & dicots, thus is NOT selective.
Because you want to kill grass (monocots) among dicots, use an herbicide which only kills monocots.

But realize that bromeliads are monocots. So you could paint the herbicide onto the grass while avoiding the bromeliads.

Check the label to determine whether or not you need to dilute the herbicide for a paint-on application. For that purpose, it's often applied full strength.

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RE: Selective herbicide usage

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Some may be interested in this article.

Here is a link that might be useful: about Glysophates

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RE: Selective herbicide usage

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Shield the bromeliads with something - a paper bag or box will work - and spray the grasses. After the spray dries, remove the shields.

Work systematically from one edge of the are to the other, making sure you don't miss a section.

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