Sempra Herbicide (Halosulfuron)

Sempra Halosulfuron 750wg Herbicide is for the selective, post-emergence control of nutgrass in sugarcane, corn or maize and sorghum and for the selective post emergence control of nutgrass and mullumbimby couch in turf.

Active Ingredient: Halosulfuron-Methyl @ 750g/kg

Similar or Comparable to: Nutless (Axichem), Sedgehammer (Amgrow), Halosulfuron Herbicide (Apparent) & Nut-Buster (FMC)

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5 out of 5 (6 customers reviews)

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This item is large and requires a courier! Ensure a courier can reach your address.
Don’t worry, shipping is STILL FREE!
Click here for shipping info or give us a call.

Ordering multiple large items? They will be shipped on a skid or pallet to ensure that your items arrive safely and securely. The delivery truck will need to be unloaded with a forklift. If you do not have a forklift, please provide an address where a forklift is present.

Sempra Herbicide (Halosulfuron) SEMPRA Nufarm

Description

Sempra Herbicide

Active Ingredient: Halosulfuron-Methyl @ 750g/kg

Similar or Equivalent to: Nutless (Axichem), Sedgehammer (Amgrow), Halosulfuron Herbicide (Apparent) & Nut-Buster (FMC)

Sempra Halosulfuron 750wg Herbicide is for the selective, post-emergence control of nutgrass in sugarcane, corn or maize and sorghum and for the selective post emergence control of nutgrass and mullumbimby couch in turf.

  • Stop Nutgrass in its tracks with Sempra Halosulfuron 750wg Herbicide. 
  • Sempra Halosulfuron 750wg Herbicide controls nutgrass and Mullumbimby couch in turf, cotton, sorghum, maize and sugarcane. It is a highly concentrated, easy to use granular herbicide.
  • Sempra Halosulfuron 750wg Herbicide is a dry flowable granule which disperses in water.
  • Sempra Halosulfuron 750wg Herbicide can be used for selective postemergence control of Nutgrass in Sugarcane, Corn/Maize and Sorghum and for the selective postemergence control of Sempra and Mullumbimby couch in Turf.  
  • Sempra Halosulfuron 750wg Herbicide may also be used for the control of Nutgrass in Cotton using shielded sprayers.

Pack Sizes:  100gm & 500gm

Registrant: Nufarm Australia Pty Ltd (APVMA # 56620)

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5 out of 5 stars

6 reviews

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What others are saying

  1. Melissa Reid

    Amazing!!!!!

    Melissa Reid (verified owner)

    It doesn’t get and any better than this product! Not only does it kill the nut grass, but other weeds as well! All you do is spray and walk away! It can take up to 2 weeks to take effect, and you don’t need to remove the nut grass or weeds by hand as it disintegrates to nothing! I highly recommend this product to anyone, you will not be disappointed!

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  2. Derek

    It works

    Derek (verified owner)

    My Nutgrass weeds are all a nice unhealthy yellow!
    The price was right; 100gm goes a long way and delivery was quite quick.

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  3. HH

    Great effective product! Great price!

    HH

    This is a fantastic product that works really well on nutgrass. We have sprayed it in my garden and the nutgrass is yellowing and dying and most of my other plants are unaffected.
    Fast despatch and shipping!! Will definitely buy again. Great information on the website.

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  4. Gavin

    Gavin (verified owner)

    Easy to use product in conveniently sized container.

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  5. Ros Elston

    Product that actually works on nut grass

    Ros Elston

    I’ve used before and with 2 or 3 applications, nut grass is virtually eliminated. But you still remain vigilant.

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  6. Tom Cole

    Tom Cole (verified owner)

    Great service, so easy to deal with , the product definitely did the job .

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Features & Benefits

  • Contains the active ingredient Halosulfuron
  • Concentrated selective herbicide 
  • Easy to use granular herbicide which disperses easily with water.
  • Controls Nutgrass and Mullumbimby couch
  • Suitable for most lawn species
  • 25g Bottle Covers up to 1,923 m2 (Turf)
  • 100g Bottle Covers up to 7,692 m2 (Turf)
  • 500g Bottle Covers up to 38,460 m2 (Turf)

Directions Of Use

Directions for Use:

Turf / Lawn mixing rate for Nutgrass control:

Established Turf (Bent grass, Buffalo grass, Carpet grass, Couch, Couch hybrid, Durban grass, Kikuyu grass, Perennial Ryegrass, Queensland blue couch & Tall Fescue  – mix 1.3 g in 10L of water (plus surfactant) per 100 square metres (refer to Directions of Use before application)

Other crop situations:

Mix 65gm – 130gm per Ha (plus surfactant.).  Apply at least 80L of Water per Ha. – Refer to Directions of Use application directions.

Mixing: 

Sempra Halosulfuron 750wg Herbicide is a dry flowable granule that disperses in water. Add the measured amount gradually to a part-filled spray tank while maintaining continuous bypass agitation. Add the surfactant near the end of the filling process to avoid excessive foaming. Remove the hose from the mixing tank immediately after filling to avoid siphoning back into the water source. If allowed to stand, ensure that the mixture is thoroughly agitated before re-commencing spraying. Use the mixture within one day.

(Refer to directions of use for full application and mixing instructions prior to use)

Surfactant Addition:

Sempra Halosulfuron 750wg Herbicide must be applied with a non-ionic surfactant to ensure uptake.  Use 200mL per 100L water of a 600g/L non-ionic surfactant or equivalent (ie Reactor 600 or Agral 600).  For hand-gun or knapsack application, add surfactant at 20mL per 10L water.

Rates are a general guide only. Before opening, carefully read Sempra Herbicide (Halosulfuron) Directions for Use, Precautionary and Protection Statements, Storage and Disposal, Safety Directions and First Aid Instructions.

Questions and answers from customers

    What do you recommend for Italian Arum (Arum italicum). I have it spreading through my garden in proximity to my trees.

  1. Q What do you recommend for Italian Arum (Arum italicum). I have it spreading through my garden in ...... Read more
    Asked by Peter Reed on August 27, 2023 11:07 am
    Answered by the admin

    Thank you for asking this on the Sempra Herbicide product page. To our knowledge, there are no registered herbicides for controlling Italian Arum (Arum italicum). An 'off-label' option you want to trial is Vigilant II Herbicide Gel. Arum Lily is listed as a susceptible species when Vigilant II is applied as a 'cut and paint' method with minimal impact on surrounding trees.

  2. I would like to buy Sempra Herbicide, and have read the instructions. I have a hose-end sprayer that disburses at a rate that can be dialled. Could you please advise what rate should I set my sprayer to dial if I mix in 1.3g of the Sempra with, say, perhaps 20-30ml of water? Thank you.

  3. Q I would like to buy Sempra Herbicide, and have read the instructions. I have a hose-end sprayer t...... Read more
    Asked by Reynold on May 19, 2023 8:59 am
    Answered by the admin

    Sempra Herbicide 'directions for use' does not indicate any rates for application by 'garden hose spray mixer', and to the best of our knowledge, there are no 'off label' recommendations. Sempra is usually mixed with 1.3gm into 10L of water and applied evenly over 100m2. If you wanted to conduct an off-label trial with a hose sprayer, we would suggest mixing the same amount of product into the hose sprayer and selecting a setting that allows that amount of water to be applied evenly over 100m2. We are not confident a hose sprayer is the best option for this application, as the inclusion of a wetting agent is recommended to a foliar spray to ensure complete coverage on the leaf surface, adhesion to the leaf and translocation to the root system to kill the string of nuts.  

  4. I note that you recommend non-ionic surfactants but given how toxic they are, could I achieve an adequate result by using dishwashing detergent Instead?

  5. Q I note that you recommend non-ionic surfactants but given how toxic they are, could I achieve an ...... Read more
    Asked by Frank on May 9, 2023 5:01 pm
    Answered by the admin

    Non-ionic wetting agents are not classified as dangerous goods and have a signal heading of 'warning' indicating that the necessary care and attention must be undertaken when using them.  They are not a scheduled poison. If you read the SDS for the dishwashing detergent in your house, you will observe that it most likely has the same warnings as a non-ionic wetting agent. We strongly advise against using a detergent with herbicides as they are not a wetting agent and will do more damage than good to the spray solution. More information is available via our blog "Why detergents are not suitable wetting agents? (https://bit.ly/42sjhhF)". Adding nothing extra to the spray mix would be preferable if you decide not to use a dedicated wetting agent.

  6. Can I mix Sempra Herbicide with Metsulfuron-Methyl Herbicide to spray on couch to get rid of nut grass and Broad leaf simultaneously?

  7. Q Can I mix Sempra Herbicide with Metsulfuron-Methyl Herbicide to spray on couch to get rid of nut ...... Read more
    Asked by Be on March 21, 2023 5:55 pm
    Answered by the admin

    Sempra Herbicide (halosulfuron) label lists compatibility with glyphosate, diclofop methyl, dicamba/MCPA and Bromoxynil/MCPA mixtures and amine formulations of 2,4-D; Metsulfuron-Methyl is not listed. Also, Metsulfuron-Methyl is not registered or recommended for use in any domestic turf or garden situation, and to do so is at your own risk. Metsulfuron can kill or severely damage trees, including gums. Metsulfuron will be leached into the soil after rainfall and remain in the ground for a time. If a tree's root system comes in contact with the Metsulfuron, it can be translocated throughout the tree. Depending on the application rate and the size of the tree, the result may be the tree's death or severe damage.

  8. Can I use Sempra Herbicide on my horse paddocks?  After the floods, we have tall flatsedge growing everywhere (we are on 7 acres, and 4 have been affected). I don't want the other grasses, clover etc., to be poisoned. We have a 400-litre boom spray, if I can use Sempra Herbicide, could you tell me the ratio and what adjuvant ratio, please?

  9. Q Can I use Sempra Herbicide on my horse paddocks?  After the floods, we have tall flatsedge growin...... Read more
    Asked by Vicki on February 5, 2023 11:08 am
    Answered by the admin

    Sempra Halosulfuron 750wg Herbicide is for the selective, post-emergence control of nutgrass in sugarcane, corn or maize and sorghum and the selective post-emergence control of nutgrass and Mullumbimby couch in turf and established pasture. The APVMA registered 'directions for use' (found on the product screen under the heading SDS & Technical tab) state ", Situation : Established Pasture - Rate: 2 applications of 65-100grms /ha (use the higher rate of Sempra for dense infestations).

    Regarding Adjuvants/Penetrants, we recommend Penatrol Spray Oil Adjuvant (rate: 500mL per100L), Effectivoil Spray Adjuvant (rate: 300mL – 1L / 100L), Protec Plus Spray Adjuvant (200mL – 1L / 100), Consume Penetrant (200mL / 100L) or Eurochem Penetrant ((200mL / 100L).

    Please note there is a withholding period of 10 weeks for grazing livestock and cutting for fodder after treatment. Always carefully read the 'directions for use' before application. 

  10. Just researching ways to kill wandering bamboo, my last effort was cutting the stalks just below the "isolation" section in the stem and pouring 40:1 roundup and filling the stem up and allowing it to soak, dang stuff has come back. I read that Sempra can mix with glyphosate.  Would it be possible that with enough Sempra and Glyphosate poured into a stalk, the Sempra may knock off the rhizomes underground as it does with the nuts of nutgrass? I am also looking at tree kill pellets as another option but finding something that kills the roots is proving problematic. Any thoughts, please?

  11. Q Just researching ways to kill wandering bamboo, my last effort was cutting the stalks just below ...... Read more
    Asked by Drew on December 11, 2022 10:17 am
    Answered by the admin

    Sempra Herbicide is not registered for the control of Bamboo, and to the best of our knowledge, we are unaware of any 'off-label' recommendations or permits advising it to be used for this purpose.  A limited number of active ingredients are registered with the APVMA for the control of Bamboo.  These include Glyphosate & Flupropanate.  Glyphosate can be applied as spot spray (remove tops of bamboo shoots and spot spray actively growing foliage and regrowth 1–2 m high) rate: 100mL to 10L water, or cut stump (cut stems back to 20 cm tall and immediately pour herbicide down the hollow stem and wet the cut) rate:  1:6.  You will need to monitor treated areas regularly for any new regrowth. 

    Regarding tree-killing pellets, we recommend herbicides made from Tebuthiuron (such as Graslan or Tebulex).   These herbicides are registered to control Brigalow and Teatree regrowth, Mimosa Pigra and certain problem woody weeds.  Bamboo is not listed on the registration as a controlled species.   Tebuthiuron targets broadleaf plant species, which does not include Bamboo.

  12. Can I mix Sempra Herbicide with Dicamba & MCPA Herbicide (Kamba M) so I can target broadleaf weeds in the turf at the same time as my nut grass?

  13. Q Can I mix Sempra Herbicide with Dicamba & MCPA Herbicide (Kamba M) so I can target broadleaf ...... Read more
    Asked by Jenny on October 29, 2022 10:24 am
    Answered by the admin

    No information on the Sempra Herbicide or Dicamba M/Kamba M label indicates physical compatibility with other products.  A small-scale' jar test' is recommended before mixing more significant quantities if you intend to mix Sempra Herbicide with other products in a tank mix.  This testing should consist of assessing both uniformed mixtures (i.e. no separation) and no rapid sediment build-up (i.e. no flocculation).

  14. I have been using Sempra Herbicide for over two months on my new garden bed, and the Nutgrass keeps emerging. I have sprayed it four times. I have pulled out a lot of rhizomes, But we have had a lot of rain in northern NSW.  The nuts are abundant in the soil. When will it all be killed?

  15. Q I have been using Sempra Herbicide for over two months on my new garden bed, and the Nutgrass kee...... Read more
    Asked by Susan on September 24, 2022 5:25 pm
    Answered by the admin

    The Sempra Herbicide is only going to be effective on actively growing Nutgrass.  If the Nutgrass has been in the soil and allowed to seed for several seasons, then there will be a vast number of 'nuts' yet to germinate, which may take 3-5 years.

  16. How long after spraying Sempra Herbicide to young nutgrass can I plant lucerne?

  17. Q How long after spraying Sempra Herbicide to young nutgrass can I plant lucerne?
    Asked by Glen on September 18, 2022 6:53 pm
    Answered by the admin

    The manufacturer of Sempra Herbicide does not have any data that define the plant back interval for Lucerne.  This means the plant back interval of 24 months should be observed after the last application of Sempra.  If you require further clarification, you might like to contact the manufacturer, Nufarm, on 0392 821 000.

  18. Can Grazon DS equivalent products or Grazon Extra Herbicide be mixed with Sempra?

  19. Q Can Grazon DS equivalent products or Grazon Extra Herbicide be mixed with Sempra?
    Asked by Anonymous user on August 3, 2022 12:02 pm
    Answered by the admin

    The label for the Grazon DS equivalent products or Grazon Extra Herbicide does not list if it is compatible with Sempra Herbicide.  This is more likely that the product has not been tested or trialled by the manufacturer with this chemical combination as it is an uncommon tank mix.  Sempra and Metsulfuron are both Sulfonylurea Herbicides.  As Grazon is compatible with Metsulfuron-methyl, a tank mix with Sempra Herbicide will likely be acceptable. Still, as this is an 'off-label' tank mix, a jar test before mixing and a test application should be undertaken.

  20. I have Navua sedge grass growing/spreading through my horse paddock. I have been recommended Sempra Herbicide. What recommendation on bottle size do you recommend for a 2-acre paddock? Is the withholding period for horses 8 weeks? I have read that a second application would be needed after, is that correct? It’s winter here now, am I best to wait until winter is finished to spray? 

  21. Q I have Navua sedge grass growing/spreading through my horse paddock. I have been recommended Semp...... Read more
    Asked by Kimberly on June 19, 2022 6:05 pm
    Answered by the admin

    Sempra Herbicide is the recommended option to control Navua sedge.  If used via a Knapsack, you will require 81grams of Sempra (1gm/10L water/100m2) to cover 2 acres.  Application by boom will require 53gm-81gm to cover 2 acres.  Note that you will need to double this quantity due to the required repeat application.  The Withholding Period on pasture if the livestock is being sent for slaughter is 'not to graze livestock or cut for fodder or forage for ten (10) weeks after treatment.'  If the animals are not being slaughtered, then the WHP does not apply.  The ideal time to spray Navua sedge is when it is actively growing following the opening wet season rains (i.e. September - May).  Apply two applications of Sempra 10 weeks apart to optimise control of Navua sedge present at the first application and subsequent germinations before the second application.  We recommend reading the Sempra Herbicide Grazing Pasture Manual before application.

  22. What is the suitable water mixing rate for Sempra Halosulfuron- methyl? Is a surfactant recommended, if so what is this additive rate please?

  23. Q What is the suitable water mixing rate for Sempra Halosulfuron- methyl? Is a surfactant recommend...... Read more
    Asked by Max Moran on February 14, 2022 12:56 pm
    Answered by the admin

    The mixing rate of Sempra depends on where you are spraying, how you are spraying and the weeds you are targeting.  We recommend you read the Sempra directions for use before use.  Our website provides these directions in the 'SDS and Technical' tab for every product. 

    For example - Turf / Lawn mixing rate for Nutgrass control:  Established Turf (Bentgrass, Buffalo grass, Carpet grass, Couch, Couch hybrid, Durban grass, Kikuyu grass, Perennial Ryegrass, Queensland blue couch & Tall Fescue  – mix 1.3 g in 10L of water (plus surfactant @ 10mL per 10-Litre Water - i.e. Reactor Wetter 600 Surfactant) per 100 square metres (refer to Directions of Use before application)

  24. Can you use Sempra in soybean crops post-emergence without harm to crops?
  25. Q Can you use Sempra in soybean crops post-emergence without harm to crops?
    Asked by Kimbra Rushton on January 18, 2022 8:50 am
    Answered by the admin

    Sempra Herbicide doesn't provide any claims for use in Soybean crops.  As this would be 'off-label' use, we suggest speaking with the manufacturer, Nufarm, on 1800 683 276 to see if they can provide extra data or information for this use.

  26. Do you sell an adjuvant suitable to be used with Sempra?
  27. Q Do you sell an adjuvant suitable to be used with Sempra?
    Asked by Megan Williams on January 3, 2022 12:12 pm
    Answered by the admin

    Specialist Sales has an extensive range of wetting agents, surfactants and adjuvants suitable for use with Sempra Herbicide.  A non-ionic surfactant, such as Reactor Wetter 600 or Wetter 1000, is ideal for Sempra. If you want the premium penetrants to guarantee the best results, we recommend Organosilicone products such as Consume Penetrant.

  28. Is this product safe to use in a vegetable patch? Does it leave any residual in the soil? Thanks.
  29. Q Is this product safe to use in a vegetable patch? Does it leave any residual in the soil? Thanks.
    Asked by Luli on December 26, 2021 3:16 pm
    Answered by the admin

    Sempra Herbicide is not registered or recommended for use in Vegetable Patches.  Halosulfuron-Methyl is from the Urea-Sulfonyl chemical group, where residue and plant back periods are standard.

  30. I have a large rose garden the nutgrass has invaded around the roses I am wondering if I could use Sempra so close to the roses if I paint the nutgrass around the roses would that be ok
  31. Q I have a large rose garden the nutgrass has invaded around the roses I am wondering if I could us...... Read more
    Asked by Geraldine Kiely on December 16, 2021 9:06 am
    Answered by the admin

    As Sempra only targets plants from the Sedge family, roses close to poisoned nutgrass should be fine.  If you plan on painting the nutgrass then that will ensure an even safer application around the roses as there will not be any spray drift.

  32. At our school, we have Nutgrass growing through our gardens that came in with the mulch. If we use Sempra to control the nutgrass, and the other garden plants get sprayed also, will the Sempra kill the garden plants?
  33. Q At our school, we have Nutgrass growing through our gardens that came in with the mulch. If we us...... Read more
    Asked by Michele on December 15, 2021 2:25 pm
    Answered by the admin

    Sempra Herbicide is registered to selectively target Mullumbimby Couch & Nutgrass, both of the sedge family of plants.  Many other plants in the garden are likely broadleaf or grasses.  Unfortunately, the registration does not include other garden species, so the utmost care would need to be taken to avoid spraying non-target plants.  Avoid spraying the plants in your garden that you are unsure about.  However, unless they are part of the sedge family, death or damage should be minimal (but can't be guaranteed).

  34. Hi there just wondering if I spray nutgrass in a cultivation paddock how long after spraying can i plant pasture, Rhodes grass etc. Thanks
  35. Q Hi there just wondering if I spray nutgrass in a cultivation paddock how long after spraying can ...... Read more
    Asked by Ivan Ardrey on November 26, 2021 5:44 pm
    Answered by the admin Unfortunately, there are no recommendations on Sempra's label regarding the plant back interval for tropical/subtropical pastures.  This is more likely to do with the trial work done at the time of registration that did not include this crop or species.  The interval for crops not listed on the label is 24 months (for safety); however, as Halosulfuron is broken down in the soil quicker in wet seasons with regular rain, this may be a shorter interval.  The manufacturer (Nufarm) may be in a position to advise if there is any off-label information available - https://nufarm.com/au/contact/
  36. Can I mix Sempra with Roundup ( Glyphosate) herbicide? Sempra 2.5g + roundup 100ml+ ammonium sulphate 200g / 10lit water. If we mix any chemical reaction will happen ? Please confirm
  37. Q Can I mix Sempra with Roundup ( Glyphosate) herbicide? Sempra 2.5g + roundup 100ml+ ammonium sulp...... Read more
    Asked by Pradeep Appu on November 19, 2021 6:06 pm
    Answered by the admin

    Sempra Herbicide is compatible to be tank-mixed with Glyphosate (Roundup) and Ammonium Sulphate.  There should not be any antagonism between these products if they are mixed at the recommended rates.  The recommended rates Sempra should be mixed at are 1.3gm/10L, Glyphosate 7mL-10mL/10L and Ammonium Sulphate at 80g/10L.

  38. I have Nutgrass in my roe garden (brought in a load of topsoil) if spraying the Nutgrass with care does it give off fumes which will effect the roses?
  39. Q I have Nutgrass in my roe garden (brought in a load of topsoil) if spraying the Nutgrass with car...... Read more
    Asked by Valerie Smith on October 29, 2021 7:08 am
    Answered by the admin

    The Sempra Herbicide (Halosulfuron) does not have any fumes or smells that will affect nearby Roses like some broadleaf sprays do (ie MCPA & 24D Amine).  When spraying close to any non-target species (ie Roses) always try to avoid spray drift.   

  40. If I spray Sempra on nutgrass which is coming up through turf, will it kill the surrounding turf? (Empire Zoysia)
  41. Q If I spray Sempra on nutgrass which is coming up through turf, will it kill the surrounding turf?...... Read more
    Asked by Bruce Young on October 2, 2021 8:35 am
    Answered by the admin

    Sempra (Halosulfuron) is a selective herbicide that selectively targets Nutgrass (Cyperus rotundus) in Turf.  The species of turf listed on Sempra's label includes Bent Lawn, Buffalo Grass, Carpet Grass, Common Couch, Durban Grass (sweet smother grass), Hybrid Couch, Kikuyu, Perennial Ryegrass, Queensland Blue Couch & Tall Fescue.  

    Zoysia is likely missing from the host turf species list as it was never included in the initial trials done when registering Sempra.  There is no mention of Sempra being detrimental to Zoysia on the label.  As Zoysia is not listed on the label it is recommended to do a trial on a small area prior to full application.

    We have had customers use Halosulfuron (Sempra) on Zoysia with good results, however as this is an 'off-label' application a trial is always recommended. 

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Disclaimer: This information and product advice is not intended to be advice or recommendations for any specific use or circumstance. You should seek specialist advice before using any product. Always follow the manufacturer’s guidelines. Specialist Sales liability is limited.

Host & Pest

Host Pest
Host & Pest
Bent Lawn Or Turf, Buffalo Grass Lawn Or Turf, Carpet Grass Lawn Or Turf, Common Couch Lawn Or Turf, Durban Grass, Hybrid Couch Grass Turf, Kikuyu Grass Lawn Or Turf Perennial, Ryegrass Turf, Queensland Blue Couch & Tall Fescue Mullumbimby Couch & Nutgrass
Cotton-shielded Or Directed Application, Irrigated Cotton-shielded Sprayer Application, Maize, Sorghum & Sugar Cane Nutgrass
Pasture - Established Navua Sedge

Tips For Use

  • Sempra Halosulfuron 750wg Herbicide should be applied to actively growing weeds when new growth has reached a minimum of 5cm of new leaf growth for Nutgrass or 2cm for Mullumbimby couch.
  • Apply follow-up treatments if sufficient new growth warrants retreatment.
  • Irrigation or rainfall within two hours of application will reduce control.
  • Drought stress after treatment may also reduce control.
  • Symptoms of weed control are a gradual yellowing of foliage and seed heads followed by desiccation.
  • Initial symptoms may take 7-10 days to be noticeable, with full effects occurring 4 to 6 weeks after treatment.

Restraints:

  • Do not apply more than 200 g/ha per season.
  • Do not apply after the onset of frosts.
  • Do not apply this product through any type of irrigation system.
  • Do not apply if heavy rain is expected within 48 hours.
  • Do not apply to paddocks where there is a high risk of weeds resistant to group B herbicides.
  • Do not make more than one application of a group B herbicide per season. 

Sempra Halosulfuron 750wg Herbicide is compatible with Glyphosate, Diclofop-Methyl, Dicamba/MCPA and Bromoxynil/MCPA mixtures and amine formulations of 2,4-D.  Read and follow all label directions, restraints, plant-back periods, withholding periods, regional use restrictions and safety directions for the tank mix products.

Tank mixing with paraquat or ametryn may result in reduced weed control.

Organophosphate insecticides should not be tank-mixed or applied 7 days prior or 3 days after application of Sempra Herbicide, as severe crop injury may result. 

Plant Back Intervals:

The following crops may be planted at specific time intervals following application of approved rates of Sempra Herbicide in approved situations. Use the time intervals listed below to determine the required time interval before planting.

Crop Plant back interval after the last application of Sempra Herbicide
Corn/Maize, Sorghum and Sugarcane

2 months

Wheat

3 months

Cotton

4 months

All other crops (except Sugarbeet)

24 months

Sugarbeet

36 months

Protection of Crop, Native and Other Non-Target Plants:

  • Avoid spraying of non-target vegetation.
  • In turf, do not use clippings from treated areas for mulching around vegetable or fruit trees.
  • Do not apply under weather conditions, or from spraying equipment, that may cause spray to drift onto nearby susceptible plants/crops, cropping lands or pastures.
  • After spraying, the first flush irrigation tailwater or stormwater run-off from land treated with Sempra Herbicide should be prevented from entering waterways.
  • Where farms do not have the capacity to retain run-off, do not irrigate to the point of run-off for at least 6 days after application.

Protection of Livestock, Wildlife, Fish, Crustacea, the Environment and Others:

  • Do not contaminate dams, rivers, or streams with the product or used container.
  • Do not feed grass clippings from treated areas to poultry or other livestock or allow grazing of treated  turf. 
  • Keep people and pets off treated areas until the spray solution has dried.
  • Sempra Herbicide is very highly toxic to duckweed. 

First Aid:

  • If poisoning occurs contact a doctor or Poisons Information Centre. Phone Australia 131 126.
  • For further information, refer to the Safety Data Sheet (SDS).

Withholding Period

Withholding Period Details (WHP):


Harvest: 

  • Turf: Do not use clippings from treated areas for mulching around vegetables or fruit trees. Do not feed grass clippings from treated areas to poultry or other livestock. 
  • All other crops: Not required when used as directed. 

Grazing:

  • Sorghum: Do not graze livestock or cut for fodder or forage for four (4) weeks after treatment. 
  • Turf: Do not allow grazing of treated turf. 
  • Pasture: Do not graze livestock or cut for fodder or forage for ten (10) weeks after treatment. 
  • All other crops: Not required when used as directed.

SDS & Technical

Sempra Herbicide Label (APVMA) Download Pdf
Sempra Herbicide Label Download Pdf
Sempra Herbicide SDS Download Pdf
Sempra Herbicide Grazing Pasture Manual Download Pdf
Sempra Herbicide Calibration for Flat Boom or Boomless Nozzle Srpayers (Excel Spreadsheet) Download Pdf

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