Crop spraying

[crofter 65]

I was wondering what the best additive to add to glyphosate for it to adhere to the plant I want to spray.
I am going to spray some gorse and rhododendrons with my knapsack sprayer, but in past experience although it works I have thought the chemical could have worked better i.e. bits still green
TIA.

 

[Bury the Trash]

I use Companion gold it seems to improve straight Glyphoste even at full rate

wouldn't Rohd'dron be better cut off and inject the chemical in the stem tho...?

and the gorse cut off let regrow then spray smaller stuff.... I should think

 

[crofter 65]

Thanks, Aye I usually cut or scrape the gorse and then spray the new shoots

 

[Phil P]

Have you checked your water hardness? Glyphosate can be virtually rendered useless by very hard water!

Activator 90 or Li700 May help also.

 

[ollie989898]

Validate or Li700.

 

[Brisel]

Validate or Li700.

This. The acid surfactants work well on waxy leafed plants like that.

 

[ollie989898]

This. The acid surfactants work well on waxy leafed plants like that.

It is the king of Adjuvants.

 

[Bury the Trash]

It is the king of Adjuvants.

which one ? are they both as acid ...

 

[Bobthebuilder]

Would it not be better getting a better chemical than roundup for killing gorse and rhododendrons, can’t remember the name of it but I’m sure there’s something for doing it

 

[wellingtonfarmer]

Doesn’t someone test water on here and then recommend best adjuvant?

 

[ollie989898]

which one ? are they both as acid ...

Validate is the newer, friendlier version I cannot remember the technical differences now, but Desangosse would be the folk to ask.

I'm not sure activator 90 etc would do anything for roundup.

 

[Brisel]

Wetters like Activator will help but not much. You’re right about Validate. There are wetters in it too.

 

[ollie989898]

Wetters like Activator will help but not much. You’re right about Validate. There are wetters in it too.

It came into play about the same time I left, I know LI700 was an acidifier, sticker and drift retardant all in one. I assume validate has been rejigged to do away with the proprionic acid component (?) which was pretty nasty and smelt terrible.

I know people who have done so but I would never use LI700 with anything other than glyphosate because it is pretty harsh. Drill/Activator and Solar plus seem friendlier and i've never seen a crop hurt by them yet.

 

[An Gof]

Mixture B is the recommended adjuvant by Monsanto for mixing with Roundup Biactive when used on Rhododendrons.

 

[Al R]

Handful of nitram in with the roundup

 

[ollie989898]

Handful of nitram in with the roundup

Shovel a bit of ammonium sulphate in was the old trick.

 

[snipe]

I’ve seen glyphosate work much better when I add .5 of a litre of 30% nitrogen liquid fert to 100litres of water. Much cheaper than any of the other wetters

 

[Brisel]

The fert will acidify the solution and help cut through the waxy cuticle on the leaf.

 

[Al R]

The fert will acidify the solution and help cut through the waxy cuticle on the leaf.

Plus they think their being fed so take it onboard rapidly!

 

[neilo]

Handful of nitram in with the roundup

Does AN acidify as well as AS? I’ve never used AS, as i’ve never had any handy, but always have some AN nearby.
Most of the acidifiers sold to use with glyphosate are mostly just AS in solution.