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Review: Rosate 36 Glyphosphate Weed Killer

March 22, 2015 By Scott Harper 42 Comments

rosate-36-reviewIn the niche of the most powerful weed killer, Rosate 36 green has been stirring some discussions due to its effectiveness and strength. It is promoted by the manufacturing company as a self-degrading chemical in soil. It is ideal for contract spraying, and management of large areas.

If you own a farm, a large garden or are in landscaping or weed control business, the Rosate 36 will intrigue you. The herbicide comes in a soluble liquid concentrate form and is apt for most species including annual and perennial grass and broad-leaved weeds.

It competes with Gallup 360 for the title of a strong industrial weed killer.

Getting Familiar with Rosate 36

As seen on its label, it is a soluble liquid herbicide containing 360 g/liter glyphosate acid present as 480 g/liter (41.5% w/w) isopropylamine salt and polyoxyethyleneamine surfactant. The herbicide is a foliar-applied, translocated herbicide for the control of annual and perennial weeds in a range of agricultural, horticultural, forestry, industrial, amenity and aquatic situations.

Available in:

  1. Rosate 36 – 1L (Glyphosate)
  2. Rosate 36 – 5L (Glyphosate)
  3. Rosate 36 – 20L (Glyphosate)

A peek into using the herbicide Rosate 36

  • Apply in a minimum of 50L water
  • Coverage Rate: 5L Rosate treats 10,000 sqm
  • Dilution Rate: 1-3L Rosate to 50L water

Overview: Working Mechanism

The Rosate 36 contains an active ingredient glyphosate, which is helpful in controlling most species of emerged annual and perennial grass and broad-leaved weeds.

It is readily absorbed by foliage and seeps into the growing points in the roots. When used under food growing conditions, it is fast and effective. It kills the weed from tip to root and prevents any regeneration or regrowth.

The glyphosate is adsorbed onto the soil particles after it eaves the roots and is completely degraded by microbial activity after coming in contact with the soil. This facilitates sowing of new plants fruitful with elimination of weed and disposal of any herbicide present in soil.

Covered Spectrum

agricultural-industrial-weed-killerThe herbicide is not selective and is effective on almost all common garden weeds, and it kills plants too! So, be careful in its application. The weeds covered by the Rosate 36 are:

  • Crops: Wheat, durum wheat, barley, oats, oilseed rape, combining pea, mustard, field bean, linseed, sugar beet, swede, turnip, onion, leek
  • Other usages: stubbles of all crops, grassland, hard surfaces, and natural surfaces not intended to bear vegetation, permeable surfaces, and overlying soil
  • Land preparation: all edible and non-edible crops (destruction of established vegetation prior to sowing or planting), apple, pear, plum, cherry, damson,
  • Aquatic environments: enclosed waters, open waters, land immediately adjacent to aquatic areas, forest and farm forestry (weed control and chemical thinning by stump application and injection).

What Garden Sprayer Should You Use?

garden-sprayer-hozelock-vs-faithfullSince concentrated glyphosate weed killers aren’t pre-dilluted or include a sprayer, you’ll need to buy one separately. The best garden sprayers to be used along this herbicide are:

  1. Faithfull SPRAY16 16 litre Pressure Sprayer
  2. Hozellock 7L Garden Sprayer
  3. Am-Tech 8L Pressure Sprayer

All of the sprayers listed above include a product warranty.

Suggested Usage

Weeds and unwanted plants are most susceptible to Rosate 36 while they are actively growing. Best environmental conditions for its use are warm, humid conditions with adequate soil moisture. Weeds that lag behind in growth or are affected by dry conditions, water-logging, high temperatures or frost are least affected by the herbicide. Any restriction in proper uptake into the plant reduces its effectiveness.

Directions for use

Crops/Situations Maximum Individual Dose (litres of
product per ha)
Maximum Number of Treatments Latest Time of
Application
Wheat, durum wheat, barley, oats, combining pea, field bean 4 One per crop 7 days before harvest
Wheat, durum wheat, barley, oats, combining pea, field bean, oilseed rape, mustard, linseed, sugar beet, swede, turnip, onion, leek 1.5 One per crop Pre-emergence
Oilseed rape, linseed 4 One per crop 14 days before harvest
Mustard 4 One per crop 8 days before harvest
Stubbles of all edible crops, stubbles of all non-edible crops EITHER 4.0 One per situation 5 days before drilling or planting of following crop
OR 1.5 One per
situation
2 days before drilling or
planting of following crop
All edible and non-edible crops (destruction prior to sowing/planting) 6.0 – Before sowing or planting
Grassland 6 One per annum 5 days before harvest, grazing or drilling
Hard surfaces, land not intended to bear vegetation, permeable surfaces, overlying soil, enclosed waters, land immediately adjacent to aquatic areas, open waters 6.0 – –
Apple, pear 5 One per annum After harvest but before green cluster
Plum, cherry, damson 5 One per annum After harvest but before white bud
Forest, farm forestry –
weed control
10 – –
Forest, Farm forestry – chemical thinning by injection 2ml product per cut per
10 cm diameter
– –
Forest, Farm forestry – stump applications See ‘Other Specific Restrictions’

It is advised that for more information you refer to the products safety data sheet.

Ingredients

The 360g/L glyphosate is a revolutionary ingredient, if we believe at what company claims. It kills weeds from tip to root and is readily decomposed by bacteria in soil – removing any traces of herbicide after treatment. This makes it environment friendly too.

Application Rate (Efficiency)

The concentrate is cost effective since it needs a small amount to effectively treat a very large area. The 20 L pack is enough to treat 209 hectares. Following is the amount needed with respect to method and area of application.

  • Knapsack Sprayers: Apply in 100-300 liters of water per hectare as a MEDIUM or COARSE spray (BCPC)
  • Example spray dilution calculation: To apply 5.0 liters per ha of Rosate 36 in a water volume of 200 liters per ha in a sprayer tank of capacity 5 liters, ass 125ml of Rosate 36 to 4.88litres of water in the sprayer tank.
  • Hand Held Weedwipers: Use a concentration dilution of 1 part Rosate 36 to 2 parts of water. Do not exceed this maximum concentration and add a water based dye if necessary.

Pros

  • Cost effective
  • Easy application with detailed instructions for coverage area
  • Gets decomposed by bacteria, leaving any traces of herbicide
  • Kills from root to tip
  • Pet friendly once product is dry

Cons

  • Slow action
  • Not selective, kills any plant immediately, if sprayed or made contact in substantial amount

Verdict

The Rosate 36 might not seem like a must have item for all gardeners, but is especially beneficial to large scale farmers, landscaping professionals and persons who practice weed control as profession. It is cost effective, covers a whole range of weeds and eliminates the problem from tip to root!

Filed Under: Weed Killer Reviews

Comments

  1. Liz says

    May 26, 2015 at 5:34 pm

    Do I need to exclude my dogs, ducks and chickens from the sprayed area?
    Thank you. I have found your information really useful.

    Reply
    • Scott Harper says

      May 27, 2015 at 8:57 am

      Hi Liz, pets should be kept away from the area until it is dry.

      Reply
  2. bob says

    June 3, 2015 at 1:48 pm

    What dilution rate should I be using for rosate36 on grass and bracken and broadleaved weeds, docks etc
    .I am appalying using a 10/12 litre back pack sprayer
    Is there any problem in its effectiveness with applying it in too concentrated a form ??

    Reply
    • Scott Harper says

      June 21, 2015 at 10:43 pm

      Hi Bob, according to the manual the appropriate dilution amount would be 6 liters. Anytime you are treating weeds, it’s suggested to start with a lower concentrate and work your way up according to the results.

      Reply
    • Auliya says

      February 18, 2016 at 1:18 pm

      david I just put in a small orchad of paicicto and was about about appling 15x15x15. as you talked about almont you mention not appling more the 1 once of nitrogen at 18 from the trunk. How do I determine how much triple 15 to put around each tree to not exceed the 1 ounce?

      Reply
  3. Paul He nessey says

    July 25, 2015 at 8:38 pm

    Will this kill bind weed with the white trumpet flower?

    Reply
    • Scott Harper says

      July 26, 2015 at 8:46 am

      Hello Paul, yes it is a great bindweed killer and can eradicate very effectively.

      Reply
  4. William Watson says

    September 9, 2015 at 12:30 pm

    Hi can I use Rosate along my hedge row privit & hawthorn & will it kill ivy growing through the bottom of hedge. Spraying with 5ltr hand held pump sprayer.
    Thanks

    Reply
    • Scott Harper says

      September 10, 2015 at 6:48 am

      Yes William, it is capable of removing ivy weeds.

      Reply
  5. Gary says

    October 6, 2015 at 2:36 pm

    will this be suitable to kill weeds around rose or will that take out the rose too ( foliage removed already

    Reply
    • Scott Harper says

      October 10, 2015 at 8:51 am

      Hello Gary, yes it it can kill all types of weeds. However, because it is non-selective it will likely kill the roses to. A solution to this problem is to buy the hozelock weed killer which will allow you to treat the weeds one-to-one.

      Reply
  6. TOM DAWSON says

    October 21, 2015 at 8:14 am

    HOW LONG DOES IT TAKE TO BE RAINFAST ?

    Reply
    • Scott Harper says

      October 22, 2015 at 7:52 am

      Hello Tom, it begins to work the moment you spray it. For best results, it may take up to a week to show.

      Reply
  7. john parker says

    October 29, 2015 at 7:57 pm

    0Where can I buy rosette 36 in Orlando.Fl.????

    Reply
    • Steve Morgan says

      April 28, 2017 at 11:09 am

      What is the dilution rate per litre?

      Reply
  8. lin green says

    June 5, 2016 at 11:22 am

    hi long after spraying before horses can go back on the land ??

    Reply
    • Scott Harper says

      June 6, 2016 at 8:54 am

      Hello Lin, your horses can go back onto the land once the applied areas are dry.

      Reply
  9. Alan Rushworth says

    June 6, 2016 at 12:33 pm

    Hello, can it be used to kill laurel bush stumps and how about bamboo?

    Alan

    Reply
    • Scott Harper says

      June 8, 2016 at 6:58 am

      Hello Alan, it can kill laurel bush and bamboo, and other weeds such as Japanese knotweed, very effectively.

      Reply
  10. Mike says

    June 13, 2016 at 3:02 pm

    In the past I have used proprietary products containing Ammonium sulphamate
    for small stumps, heaping up the crystals on the cut surface and covering with a plastic
    bag. How should Rosate 36 be applied in this instance?

    Reply
    • Scott Harper says

      June 14, 2016 at 9:02 am

      Hi Mike, Ammonium sulfamate is best for removing woody plants, tree stumps, and bramble. Glyphosphate based weed killer work best for plant type weeds such as perennials.

      Reply
  11. Gary says

    June 15, 2016 at 9:00 am

    Will it kill the grass or just the weeds

    Reply
    • Scott Harper says

      December 26, 2016 at 9:04 am

      Hello Gary, it is a non-selective liquid weed control concentrate and can kill your grass if you apply it there. Our advice is to use the hozelock wonder weeder to target only the areas where non-wanted plants are growing.

      Reply
  12. Carl says

    January 20, 2017 at 12:49 pm

    Can you use this product on tennis courts to remove moss growth

    Reply
    • Scott Harper says

      January 27, 2017 at 12:16 am

      Hello Carl, you may want to take a look at moss killers here.

      Reply
  13. Debbie says

    February 21, 2017 at 1:27 pm

    When it rains does it activate the weed killer again so animals cannot go on it.
    Would you recommend this as a treatment before laying a new lawn, if so how long afterwards would you recommend for turf laying

    Reply
  14. Mark says

    March 16, 2017 at 11:27 am

    Is there anything I can add to Rosate 36 to permanently kill off the growth of weeds on my driveway?.
    Rosate 36 only works for short periods

    Reply
    • Andy says

      September 29, 2017 at 6:46 pm

      Hi Mark, You can add paradise to the glyphosate mix which is a residual weedkiller and lasts around 6 months. You would need to add 2.5 grams of paradise to a 5 litre tank of mixed solution.

      Reply
  15. Natalia says

    March 20, 2017 at 12:51 pm

    I have large mounds of onion weed that my research says are hard to kill. Will Rosate 36 be enough? I also have individual onion weed bulbs near plants I want to keep. Can I isolate the good plants by protecting them and still spray the onion weed and will that above ground protection be enough to save the good plants?

    Reply
  16. Kev says

    March 25, 2017 at 10:02 pm

    Hi i have sprayed my grass which has a lot of weed growth how long before my dogs can go back in the garden and when can i resow or returf thanks

    Reply
  17. Alison Nicholson says

    April 4, 2017 at 9:14 am

    Hi

    Can I use this to treat inside a polytunnel before planting in it???

    Reply
    • Scott Harper says

      April 5, 2017 at 6:06 am

      Hello Alison, it is 1-3 litres of Rosate 36 for every 50 litres of waater

      Reply
      • Harj says

        September 6, 2017 at 7:24 pm

        I use 125ml in 5 litres of water.

        Reply
  18. Tony says

    July 27, 2017 at 7:09 pm

    Hi I am a gardener basically maintaining gardens drives patios etc. Can this be used to kill unwanted weeds on paths, drives, patios and gravel from a watering can at 20ml/1l ration? I do have a pump sprayer available also. I am tired of buying clients boxes and boxes of weedkiller and now look to buy in bulk if this suits the above needs. many thx Tony

    Reply
    • Andy says

      September 29, 2017 at 6:42 pm

      Hi Tony, I use this in all the gardens I work in and it works effectively on gravel, paths and patios just as well. I would recommend using a pressure sprayer for even and more cost effective results using 25ml per litre of water.

      Reply
  19. Michelle says

    August 2, 2017 at 7:18 am

    Hi, will this kill flower bulbs? Thank you 🙂

    Reply
  20. Peter says

    August 4, 2017 at 3:37 pm

    Hi, will it kill horsetail?

    Reply
    • Andy says

      September 29, 2017 at 6:49 pm

      Hi Peter. The basic answer is no… You would need to look for a weedkiller called ‘Kurtail’ to eradicate mares tail. Rosate will just brown off the surface growth , but doesn’t translocate throughout the root system as well as kurtail.

      Reply
  21. Karen Stringfellow says

    September 7, 2017 at 10:47 am

    Hi

    I was wondering how effective this would be on grass growing in a menage of sand and fibre and also how long it would be before it was safe for horses to exercise in it?

    Thank you

    Reply
  22. Andy says

    September 29, 2017 at 6:52 pm

    Hi Karen, Rosate will work very well on all kinds of grasses and you can exercise the horses once the spray has dried completely.

    Reply
  23. Chris Cross says

    November 6, 2017 at 6:32 pm

    Will roseate kill bamboo

    Reply
    • Scott Harper says

      November 7, 2017 at 8:21 pm

      Yes, any weed killer containing Glyphosate should work.

      Reply

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