Stylet Oil Fungal, Insect & Virus Control (1 case of 2 of 2.5 gallons)

Stylet Oil Fungal, Insect & Virus Control (1 case of 2 of 2.5 gallons)
Stylet Oil Fungal, Insect & Virus Control (1 case of 2 of 2.5 gallons) Stylet Oil Fungal, Insect & Virus Control (1 case of 2 of 2.5 gallons)
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Stylet Oil Fungal, Insect & Virus Control

Organic Stylet-Oil contains the same high purity base oil that kills powdery mildew on contact, controls plant feeding mite populations and is safe for field workers and the environment.

With its new advanced emulsification system, Organic Stylet-Oil uses only the safest inert ingredients on EPA's List 4, - but that's not all. Each component of Organic Stylet-Oil's formulation meets or exceeds "Food Grade Quality" standards making it a safe, environmentally friendly white oil formulation. Organic Stylet-Oil is one of the few tools that Homeowners, Professionals and Organic Growers have that can control certain fungal diseases, insects, mites, plus certain potyviruses - with a single application!

Effective on Glassy Winged Sharshooter - vector for Pierce's disease (PD)

Stylet-Oil is effective in treating the glassy winged sharpshooter. The glassy winged sharpshooter is the vector for Pierce's disease (PD) bacterial disease. Stylet Oil works in two modes of action against the sharpshooter: 1) direct contact and 2) effect on feeding behavior (interferes with their recognition of host plant). As a direct treatment for Pierce's disease, Stylet-Oil is not effective since it is not designed to treat bacterial disease.

Effective on Asian Psyllid - vector for Citrus Greening

Stylet-Oil is effective in treating Asian Psyllid as a part of an overall control program. The Asian Psyllid is the vector for the Citrus Greening bacterial disease. Stylet Oil works in two modes of action against the Asian Psyllid: 1) direct contact and 2) effect on feeding behavior (interferes with their recognition of host plant). As a direct treatment for Citrus Greening, Stylet-Oil is not effective since it is not designed to treat bacterial diseases.

Organic & safe alternative to Sulfur for insect and early season powedery mildew control

Organic Stylet-Oil also acts as an environmentally safe alternative to sulfur for both insect and disease control. Sulfur can evaporate into the atmosphere to combine with water resulting in acid rain, but Organic Stylet-Oil stays on your crops, where you need it. Another plus is that, unlike sulfur, Organic Stylet-Oil is not volatile in temperatures below 65 degrees F, making it the perfect early-season powdery mildew control alternative.

  • OMRI Listed 
  • WSDA Reg. Materials
  • Safe to Workers and the Environment
  • Can be used as a Fungicide, Insecticide and for Virus Control
  • Colorless, Tasteless and Odorless
  • "Food Grade Quality"
  • Not as Harmful to Beneficial Insects
  • No Pre-Harvest Interval

SEE FULL DIRECTIONS FOR USE ON PRODUCT LABEL. Always follow the instructions on the product label.
Always read and follow label directions for all products. Information here is not a substitute for directions on the product labels.


Application for Plant Disease Control PDF

Application for Insect and Mite Control PDF

Application for Plant Virus Control PDF

Mixing Procedures PDF

Importance of Spray Coverage PDF

Environmental Influences PDF

Application for Plant Disease Control

Stylet-Oil is used to control certain fungal diseases (such as powdery mildew, Botrytis bunch rot and rust). Stylet-Oil is an excellent eradicant and will kill powdery mildew on contact as well as prevent development for 10 to 14 days depending on the use rate. Stylet-Oil is successfully used in grape powdery mildew control programs throughout the world, including some of the premiere wine grape growing regions in California, Oregon, Washington and New York.

Application for Insect and Mite Control

Stylet-Oil delivers a one-two punch to harmful insects and plant feeding mites through suffocation and modifying their feeding and egg-laying behaviors. Plant feeding insects and mites probe into plant tissue using microscopic hollow hairs called sensillae to detect secondary chemicals in the host plant that trigger critical insect behaviors such as feeding and egg-laying. Stylet-Oil works by plugging the hollow sensillae with oil, making it impossible for the insect to recognize it is on a host plant. Without recognition, harmful insects and mites will not feed or lay eggs. Beneficial insects such as ladybugs, predatory mites and praying mantis's don't probe into plant tissue. Instead they use different sensing mechanisms - their eyes, feet and mouthparts - to recognize and catch prey. When using Stylet-Oil, you can breathe easy knowing the population of beneficial insects is safe.

Application for Plant Virus Control

Aphid-borne plant viruses can be transmitted in less than 20 seconds after initial contact with the plant, but Stylet-Oil is designed to interfere with the transmission process giving you peace of mind that your crops are protected. For this reason, Stylet-Oil is the perfect choice for farmers like you to keep certain plant viruses to a minimum. Stylet-Oil works at the physical level (as opposed to the biochemical level), so, include Stylet-Oil in your virus management program for positive results.

Mixing Procedures

1. Add 1/4 to 1/2 of the liquid amount of water to the tank mix.

2. Start agitator before adding any tank mix partners. In general, tank mix partners should be added in the following order:

  • Products Packaged in Water Soluble Packaging
  • Wettable powders
  • Wettable granules (dry flowables)
  • Liquid formulations
  • Liquids; Emulsifiable concentrates
  • and, add mineral oil as the last ingredient.

NOTE: Certain products are packaged in water soluble packages which are not oil soluble. We recommend these products be mixed in a clean 5-gallon bucket of water before adding to the spray tank water. Always add the oil to the spray tank as the last ingredient.

3. Provide sufficient agitation while adding the remainder of the water.

4. Maintain agitation until all of the mixture has been applied. General Information:

  • always add the oil to the tank mix as the last ingredient
  • local climatic conditions can adversely affect the persistence of oil on a crop
  • on crops where a tank mix or a spray interval has not been used before, spray a small area with the recommended nozzles and pressure, then wait several days to observe potential for phytotoxicity
  • products which are phytotoxic when used alone will be more phytotoxic when used with the oil
  • when other products are tank mixed with Stylet-Oil the other products should be used only in accordance with their specific label directions

Importance of Spray Coverage

Home & Garden

Stylet-Oil can be sprayed using a standard pump sprayer, available at any local home and garden center. It is important to spray the plants to the point of runoff. There is no need to oversoak the plant.

Commercial Growers

Stylet-Oil's performance is directly related to the quality of spray coverage, so follow these tips to assure maximum protection for your crops.

  • Calibrate your sprayer regularly. Calibration is one of the most important steps you can take to optimize your pest and virus management program. Spray too little and pest control suffers; spray too much and your checkbook suffers.
  • Replace worn nozzles. Worn-out nozzles have a tendency to spray unevenly with distorted spray patterns. What this means is that your crops are not getting uniform spray coverage which can leave open doors for pests and viruses to take hold.
  • Clean or replace nozzle screens as needed. Dirty nozzle screens or filters can clog your sprayer and limit the amount of Stylet-Oil being sprayed as well as the evenness with which it's being applied. Take a few minutes to check your screens and filters regularly to assure you're getting the best possible results.
  • When replacing nozzles, replace them all at the same time.
  • Check your pressure regulators. Before the season starts, check to make sure your pressure regulators are working properly and adjust them accordingly. If needed, replace them. It's only a few dollars but the difference in the quality of spray coverage is worth it.
  • Maintain a constant tractor speed. Doubling your tractor speed reduces Stylet-Oil spray coverage by 50% - more than enough to greatly alter the performance of the oil.
  • Spray every row. Never alternate rows.
  • On vegetables: Use air blast or air assist sprayers with caution. Air blast sprayers are good for spraying long distances but this can pose a few problems. Depending on how fine the droplet sizes are, they could evaporate before making contact with crops. If the droplet sizes are too big, your Stylet-Oil application will roll off before maximum protection can be achieved. Another danger with using air blast sprayers is that they can be stressful to crop plants. Air blast sprayers work by shooting the spray at a high velocity and this can damage tender fruit, vegetables or leaves. If using an air blast sprayer, you may need to tweak the spray nozzles and adjust or replace the air delivery system to push a greater volume of air but at a lower velocity. Spray "less, more often" rather than "more, less often". Foliage missed by the first spray application will likely be covered on the second application and benefit from not having gone a long period exposed to pests and viruses.
  • Don't apply Stylet-Oil to wet plants. This includes early-morning dew and fog drizzle. Spraying onto a wet plant causes Stylet-Oil to bead with water droplets on the leaf and roll off, thus limiting effective coverage. Wait until the outer canopy is dry.
  • When it's windy, park the tractor. Spraying during windy conditions in excess of 10 miles per hour greatly reduces spray coverage and can be quite an expensive mistake. Not only will your crops receive uneven coverage (if any coverage at all), but all of the money you spent will "blow away in the wind."
  • Do not spray in temperatures in excess of the manufacturer's label recommendation. Extreme temperature can affect plant physiology and can allow the leaves to absorb the spray  thus harming the plant.
  • Do not spray heat or moisture stressed crops. Applying even water to stressed crops can cause phytotoxicity.
  • When spraying row crops, make sure your path is smooth. Running over something as simple as a small rock can cause the spray boom to sway creating uneven distribution of spray material.
  • Use a practical spray boom length. Reducing your spray booms from 60 feet to 30 feet can greatly increase your chances of even coverage. It may take a bit longer to spray your crops, but it's worth it in the end.
  • Excessive dust can affect oil performance. Dust accumulations on plant surfaces can absorb Stylet-Oil and compromise its effectiveness. Minimizing vehicular traffic on your dirt roads and paths, using overhead irrigation in moderation can all help keep your crops dust-free.

Environmental Influences

Stylet-Oil is a protectant spray product whose performance is influenced by the quality of spray coverage on the surface of the plant. As with all protectants, there are certain environmental influences which may compromise product performance. These environmental influences include:


Do not spray Stylet-Oil when freezing temperatures are anticipated within 48 hours of an oil application, above 90° F (32° C) or when plants are under heat or moisture stress. On vegetables:

  • Do not apply when temperatures are below 50° F (10° C).
  • If daytime temperatures exceed 90° F, spraying should be done at night or early morning
  • The risk from spray injury at high temperature is due to the likelihood of heat or moisture stress in the plants, a condition where spray droplets can be absorbed into the leaf.


  • Do not apply Stylet-Oil within 48-hours of a predicted frost or freeze do not apply Stylet-Oil within 48-hours after a frost or freeze

Wet Weather

Do not spray wet foliage. Rain or overhead irrigation has the potential to wash Stylet-Oil off plant surfaces. The use of frequent overhead irrigation can compromise a Stylet-Oil spray program. We do not recommend the use of Stylet-Oil where a twice per week application schedule is required and overhead irrigation is the sole source of irrigation.

Considerations Under Wet Weather Conditions

  • Rain in excess of 1/2 to 3/4 inch will remove most of the oil residue from foliage
  • Do not apply Stylet-Oil to wet foliage or poor spray coverage will result. Wait until the outer canopy has dried before applying the oil oil residue can be detected by immersing leaves in water; the formation of water beads indicate
  • Oil residue is on the surface of the leaf 

Windy Conditions

  • Spraying pesticides under windy conditions can result in poor spray coverage. For this reason we do not recommend spraying Stylet-Oil (or anything else) if the wind exceeds 10 miles per hour. (Note: Some states may mandate maximum wind thresholds while spraying. Consult your local and State regulations.)

Spraying Vegetables Under Windy Conditions

  • Under wind conditions of 0 to 5 mph, lower nozzles to within 12 to 15-inches of the plant canopy
  • Under wind conditions of 6 to 10 mph, lower nozzles to within 8 to 10-inches of the canopy and slow down the tractor
  • When practical, spray at night when wind conditions are less prevalent

Dusty Conditions

  • The accumulation of significant amounts of dust (where leaves are actually turning the color of the dust) will adversely affect an oil spray program because dust will absorb the oil.

Considerations Under Dusty Conditions

  • Minimize vehicular traffic and drive slowly on perimeter roads
  • Overhead irrigation can be useful so long as it is done in moderation
  • Application of a dust retardant (such as lignum sulfonate) can be useful

Storage Recommendations

Organic Stylet-Oil Storage Recommendations PDF

Stylet-Oil in the container is a clear, colorless, tasteless liquid. The oil is formulated with an expensive, high performance emulsifier which is uniformly suspended in the oil. Under normal storage conditions this emulsifier is not visible. However, if water should enter the container due to poor storage conditions, the emulsifier has potential to degrade causing the oil to turn a "milky" color. Never use Stylet-Oil from a container which has a milky appearance - pest control will suffer and oil applications might damage your crop!

NOTE: When Stylet-Oil is added to water in the spray tank the mixture of water + oil should turn a milky color (which indicates the emulsifier is blended and working properly). If the oil fails to emulsify (turn a milky color) in the spray tank, contact us immediately.

To Prevent Water Contamination:

  • Store drums or containers indoors
  • Store drums or containers outdoors under a waterproof tarp or roll drums onto their sides
  • Never store Stylet-Oil in used pesticide containers containing chemical residue (the oil may dissolve incompatible chemical residue from inside the container resulting in either the destruction of the oil’s emulsifier and /or damage to your crop when the oil is sprayed)
  • Never store Stylet-Oil in a used detergent or soap container
  • When transferring Stylet-Oil from a drum or tote, always use clean, uncontaminated containers

Temperature Conditions Under Storage:

  • Never store Stylet-Oil below freezing temperatures (32° F or 0° C)
  • Storage under high temperature conditions is not a problem

Shelf Life:

  • The shelf life of Stylet-Oil is 3 years. However, oil stored longer than 1 year should be stirred prior to use to re-suspend any emulsifier which may have settled during storage.

To Re-suspend Emulsifier After Long Term Storage:

  • Stir the oil with a commercial paint stirring rod of sufficient length or a metal stirring rod (3/8-inch rebar plus a 12-inch length of chain welded to one end) using an electric drill for approximately 5 minutes per 30 gal drum.
  • Rolling drums on their sides will also re-suspend any emulsifier which may have settled during storage, although stirring with a stirring rod is preferable.

Organic Stylet-Oil FAQ and General Information PDF

FAQ and General Information

Effective on Glassy Winged Sharshooter - vector for Pierce's disease

Stylet-Oil is effective in treating the glassy winged sharpshooter. The glassy winged sharpshooter is the vector for Pierce's disease (PD) bacterial disease. Stylet Oil works in two modes of action against the sharpshooter: 1) direct contact and 2) effect on feeding behavior (interferes with their recognition of host plant). As a direct treatment for Pierce's disease, Stylet-Oil is not effective since it is not designed to treat bacterial disease.

Effective on Asian Psyllid - vector for Citrus Greening

Stylet-Oil is effective in treating Asian Psyllid as a part of an overall control program. The Asian Psyllid is the vector for the Citrus Greening bacterial disease. Stylet Oil works in two modes of action against the Asian Psyllid: 1) direct contact and 2) effect on feeding behavior (interferes with their recognition of host plant). As a direct treatment for Citrus Greening, Stylet-Oil is not effective since it is not designed to treat bacterial diseases.

How much Stylet-Oil should I use? 

Mix Stylet-Oil in water at the rate of 1 to 2 ounces per gallon of water. Note: 1 fluid ounce equals 2 tablespoons. A rate of 1.5 oz. (3 tablespoons)/gallon of water is recommended for most applications.

May I enter the sprayed area the same day Stylet-Oil was sprayed?

Yes. The restricted entry interval is 4 hours. There is no pre-harvest interval for Stylet-Oil.

Is it safe to use a non-circulatory pump-up sprayer to apply Stylet-Oil flower/garden plants?

Yes. If you are using a pump-up sprayer that does not have a circulation pump or agitator, after mixing the oil + water in the tank, shake the tank to ensure a uniform emulsion before spraying, and then shake the tank every ten minutes for about 10 seconds until the spray tank is empty.

Should I clean a previously used sprayer before using it to apply Stylet-Oil?

Yes. Triple rinse the spray tank and spray clean water through the hose to ensure no chemical residue is in the system. We do not recommend applying Stylet-Oil in a sprayer used to apply herbicides. Use a separate sprayer to apply herbicide materials.

To kill a pest insect with Stylet-Oil, do I need to contact the insect with the oil?

Stylet-Oil needs to contact pest insects to kill them, thus under-leaf application may be necessary if that is the location of the pests at the time of application.

Will Stylet-Oil injure my ladybugs or lacewings?

Avoid direct contact with honeybees, ladybugs or other beneficial non-target insects. Spray during the time of the day when bees or beneficial insects are not actively foraging. Stylet-Oil is safe to beneficial insects but over-spraying or direct contact may kill these these insects.

Should I apply Stylet-Oil if beneficial insects are presents?

It depends on the level of infestation. If you see beneficial insects actively feeding on insect pests (such as scale, aphids or whiteflies) you may want to delay spraying oil to give beneficial insects time to reduce the pest population. There is always a time lag between pest populations and beneficial populations but this is how pest pest populations are normally controlled in nature.

Is Stylet-Oil harmful to the environment, Where does the oil go?

The vast majority of Stylet-Oil application is broken down by microbes in the environment into carbon dioxide and water. Approximately 2% of the oil has potential to evaporate and some of the oil will bleed through the leaf cuticle.

Is Stylet-Oil an eradicant against mildew diseases?

Based on years of University and independent research, Stylet-Oil is the best eradicant available against grape and cherry powdery mildew diseases.

What is Stylet-Oil's mode of activity against powdery mildew?

The oil is both an eradicant and protectant against mildew and works on the basis of physical contact. The oil disrupts cell walls of the organism resulting in death within seconds of contact and by interfering with attachment of the organism to its host. 1996 research has shown that the oil prevents mildew development, kills infections both before and after they become visible and prevents sporulation. One of the many benefits of using the oil is that it can be used as an eradicant, protectant and antisporulant.

Using Stylet-Oil, can a grower control mites while spraying powdery mildew?

Certainly. 1998 research from Cornell Extension Service has shown three pre-bloom Stylet-Oil sprays (1% at 100 gallons per acre) to significantly reduce mid-to-late season mite populations on Concord grapes. Spray for thorough coverage to the point of runoff at 1 to 2% spray concentration for mite control.

Does Stylet-Oil fight Botrytis bunch rot?

Yes. Stylet-Oil has activity against botrytis bunch rot.

Can Stylet-Oil be safely sprayed post bloom on grapes?

During the post-bloom period, growers may resume a traditional sulfur program, spray oil alone, tank mix with DMI / strobilurin fungicides labeled for powdery mildew control or alternate sprays with DMI / strobilurin fungicides labeled for powdery mildew control.

Does Stylet-Oil affect the appearance of the bloom?

Yes. The "bloom" is the whitish-gray surface seen on ripening grape berries (as well as on blueberries and plums) and is caused by light striking microscopic waxy plates arranged at random angles on the berry surface. Stylet-Oil will cause these plates to lay flat so that when light strikes the berry, it does not scatter light but reflects light resulting in a shiny berry. The effect is cosmetic and does not affect the berry, pollination, taste, fermentation or disease control. The bloom will return within two to three weeks of the last oil application.

Is Stylet-Oil compatible with sulfur?

No. There is a 14 day interval between use of Stylet-Oil and sulfur on most crops. On grape the interval is 10 days.

Will Stylet-Oil outperform sulfur early-season during cooler times of the year?

Sulfur needs to volatilize to be active against powdery mildew. Generally, 65° F is recognized as a minimum temperature required for sulfur activity against mildew. Stylet-Oil is not temperature dependent thus works as an eradicant, protectant and antisporulant 24 hours per per day.

Can Stylet-Oil be sprayed pre-bloom as a sulfur replacement on grape?

Yes. As an early-season sulfur replacement, growers should make three pre-bloom oil applications at 1 to 1.5% spray concentration at 40 to 50 GPA every 10 to 14 days. Begin spraying at budbreak or the 2" to 4" shoot growth stage. The oil has no effect on flower bloom or pollination.

What is the spray interval between a sulfur application and a Stylet-Oil application?

On grapes, do not apply sulfur within 10 days of an oil application. On all other crops, do not apply micronized sulfur within 10 days of an oil application and do not apply oil within 14 days of an application of wettable or dusting sulfur.

Will Stylet-Oil affect wine flavor, taste or quality?

Stylet-Oil is a "Food Grade Quality" mineral oil which is colorless, tasteless and odorless. Extensive testing by University and independent researchers confirm that Stylet-Oil has no effect on wine flavor, taste or quality.

Can growers safely tank mix Stylet-Oil with spread/stickers?

We do not recommend tank mixing Stylet-oil with spreader/stickers or organasilicone surfactants because of the risk to destroy the oil's emulsification system. These chemicals may be sprayed separate from the oil as long as the foliage has dried. It makes no difference whether the oil goes on before or after the spreader/sticker application.

On grapes, can Stylet-Oil be tank mixed with copper fungicides?

Yes. However, do not use copper and oil together with fruit present.

Is it possible to tank mix with emulsifiable concentrate formulations compatible with the oil?

On most crops, there is no problem. Use the recommended label rate of the material to be tank mixed with the oil. Add the oil as the last ingredient to the mix. Be sure to use only product registered for use on crops which Stylet-Oil is registered on.

What other pesticides is Stylet-Oil not compatible with?

Products containing the active ingredient captan and chlorothalonil are not compatible and a 14 day interval is advised. There is a list of materials on the label that are not compatible with Stylet-Oil. If you are not sure of compatibility, contact us.

Is there a simple way to determine the quality of spray coverage while spraying for powdery mildew?

Yes. because the oil kills mildew on contact, growers can use the oil as a "spray marker" to determine the overall quality of coverage.

Can the type of sprayer used to apply the oil affect product performance?

Absolutely. Stylet-Oil works on the basis of physical contact - the better the spray coverage, the better the level of control. Thus, growers should choose spray equipment which maximizes spray coverage for the crop/canopy to be sprayed. A pump-up sprayer (available at numerous retail outlets) can be used to apply Stylet-Oil provided the sprayer is agitated or shaken every 10 minutes to keep the oil in suspension in the spray tank water. Apply the oil-water mixture to the point of runoff. Be certain to thoroughly clean all sprayer hoses and tanks to remove latent herbicide residue before spraying Stylet-Oil, otherwise plant injury may occur.

What are some of the parameters a grower should use to successfully apply Stylet-Oil?

Regardless of the crop being sprayed or the type of equipment used to apply Stylet-Oil, successful application of the oil relies on the following parameters:

  • Stylet-Oil performance is directly related to the quality of spray coverage 
  • Apply the product in a minimum quantity of water (15 - 20 gpa)
  • Use a rate of no less than 0.5 gpa
  • it is advisable to increase the volume of water and Stylet-Oil as the canopy increases in size;

Can Stylet-Oil be used as a resistance management tool?

Absolutely. In fact we strongly urge growers to use the oil as the first treatment in a powdery mildew control program to eradicate resistant mildew strains before these strains are exposed to chemicals prone to resistance. Cleaning up an orchard or a vineyard before the first DMI or strobilurin chemicals are applied is an excellent resistant management strategy. Stylet-Oil's mode of action works at the physical level - not the biochemical level - thus the oil is an ideal material to alternate with DMI/strobilurin fungicides.

How much impurity is in 30 gallons of Stylet-Oil compared to the same volume of a 92% UR summer oil?

There are 1.2 quarts of impurity in 30 gallons of Stylet-Oil compared to 9.6 quarts of impurity in the same volume of a typical 92% UR summer oil.

Are these impurities active in biological control?

No. Mineral oil impurities are not active in biological control and perform no useful purpose other than to take up space in the container.

Are there any storage conditions which might affect quality of the oil?


  • Store the oil where water can not enter the container
  • Stir the oil prior to use if it has been stored for a period of 1 year or more.
  • DO NOT store Stylet-Oil at temperatures below freezing. 

If water enters the container during storage, can this effect the oil?

Yes. Water that enters the container has the potential to destroy the oil's emulsifier causing the oil to turn a milky color. Growers should never use Stylet-Oil if the oil has a milky color while still in the container.

When Stylet-Oil is added to water in the spray tank the mixture turns milky color. Is this normal?

Yes. It indicates that the oil's emulsification system is working properly.

When Stylet-Oil is added to water in the spray tank , the mixture should turn a milky color. What should you do if the Stylet-Oil does not emulsify (turn milky color) when added to water?

Call us immediately. What is the minimum spray temperature requirement? Do not spray when freezing temperatures are anticipated within 48 hours of an oil application. On vegetables: do not apply when temperatures are below 50° F.

If applied under 90 degrees and the temperature later rises above, is there danger of injury?

No, not under normal circumstances. The temperature at the time of application is the critical factor, thus spraying should be limited to cooler nighttime or daytime periods. However, spraying stressed plants with oil (at any temperature) may result in phytotoxicity.

What type of personal protective equipment is necessary to spray the oil?

Wear coveralls, chemical resistant gloves, shoes and socks.

Organic Stylet-Oil Technical Specifications PDF



















What is the Technical Grade White Mineral Oil

The base oil used to formulate Stylet-Oil, Organic Stylet-Oil and Stylet-Oil for Grass Seed Use is defined in the industry as a Technical Grade White Mineral Oil (or white oil). The decision to provide growers with a technical grade white oil for disease and insect control was made more than two decades ago by Flower Farms, Inc. Providing growers with a highly refined, superior technical grade white oil has a number of advantages over non-white horticultural oils. The purity (or Unsulfonated Residue) of the base oil used in Stylet-Oil is 99.1%; the purity of non-white horticultural oils is typically 92%. This difference in purity can have significant consequences: There is more active ingredient (ai) in white oils than in typical non-white horticultural oils.

White oils do not contain aromatic hydrocarbons, thus, these compounds are not freely evaporating into the atmosphere from spray applications. Typical 92% UR horticultural base oils can contain as much as 8% aromatic hydrocarbons - all of which evaporate into the atmosphere as air pollutants.

Included in these aromatic compounds are suspected Carcinogenic compounds such as benzene, toluene and xylene. After refining, these compounds are not effectively removed from 92% UR oils, but they are removed using the advanced refining processes to manufacture white oil.

Potential for phytotoxicity (plant injury) is minimized when using white oils due to the removal of impurities, including aromatic compounds.

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