Application rate for Roundup,quick answer needed.

Western Pomise

Hi folks,first time in ten days the grass is dry around here!,OH wants me to kill off grass where she wants to plant shrubs later on year.Using Roundup Bioactive with 15 litre knapsack.Would 200 ml of roundup to 15 l mix be effective enough to kill grass off?...doesn't need to be real quick kill off,thanks for any answers...

frazzledhome

Western Pomise wrote: »

Hi folks,first time in ten days the grass is dry around here!,OH wants me to kill off grass where she wants to plant shrubs later on year.Using Roundup Bioactive with 15 litre knapsack.Would 200 ml of roundup to 15 l mix be effective enough to kill grass off?...doesn't need to be real quick kill off,thanks for any answers...

Loads

lazeedaisy

Would need 300mls to be effective

my3cents

From http://www.dhm.ie/products/herb/roundup-biactive2.pdf

EXAMPLE..
To apply 41/ha (2.8 pts/ac) of Roundup Biactive in 200 l/ha (18 gal/ac) with a Knapsack of total capacity 10
litres (2 gals) add 200 ml (1/3 pint) of Roundup Biactive to 9.8 litres (15 1/2 pints) of water. With this dilution
and a walking speed of 1 metre/sec and a swath width 1 metre (3.3 feet), a total of 500m 2 (540 sq yds) will be
covered.
To apply 6 l/ha (4.2 pts/ac) add 300ml (1/2 pint) Roundup Biactive to 9.7 litres (15 pints) of water to cover a
similar area. Where low volume hydraulic nozzles are fitted, application volume may be reduced to 100 l/ha
(9gal/ac) (see Knapsack spraying - easy application guide).

Grass would normally be sprayed at the lower rate so 200ml in 10l or 300ml in 15l but as you can read it depends on walking speed, pressure and nozzle size but 300ml in 15l is a good average mix.

Western Pomise

my3cents wrote: »

From http://www.dhm.ie/products/herb/roundup-biactive2.pdf



Grass would normally be sprayed at the lower rate so 200ml in 10l or 300ml in 15l but as you can read it depends on walking speed, pressure and nozzle size but 300ml in 15l is a good average mix.

Thanks for all the replies,will go with 300 then to be sure.

Western Pomise

Turned into a great afternoon for spraying,got 4 knapsacks out on:).

my3cents

Western Pomise wrote: »

Turned into a great afternoon for spraying,got 4 knapsacks out on:).

That must be some number of shrubs your other half will have you planting.