SC27™ soil inoculant is one of a new generation of agricultural inputs available to growers in the US. SC27 microbial soil inoculant was developed to supplement and replace the beneficial soil microorganisms found in productive, fertile soils. Dr. Frank McKenna, one of the leading agricultural microbiologists, developed SC27 soil inoculant. SC27 soil inoculant has undergone extensive testing and evaluation in agricultural regions around the world and is now available in the US.

Background questions and answers

What is SC27 soil inoculant?
SC 27 soil inoculant is a concentrated product that contains active, living microorganisms. These organisms have been carefully selected to be adapted to growing conditions in your region.

Where was SC27 developed?
SC27 soil inoculant was developed in Australia. The organisms were selected and isolated from Australian soils. Today, SC27 is produced around the world specifically for the soils, crops and growing conditions for each particular region.

What kinds of organisms are found in SC27 soil inoculant?
SC27 soil inoculant contains a number of different species and strains of rhizobacteria. Rhizobacteria are bacteria that live on the root surface and in the soil immediately adjacent to the roots. This range of organisms means SC27 soil inoculant can be beneficial when applied to a range of different crops and on different soils.

Where do the organisms in SC27 come from?
SC27 soil inoculant contains only naturally occurring native soil microorganisms. These microorganisms are isolated from soils using special techniques that require sophisticated laboratory equipment and technology.

Is all SC27 the same?
Yes and No. Each production run of SC27 is the same as the one before. We have rigorous quality control and quality assurance procedures in place to be sure that SC27 always meets the highest standards. The product is tested regularly to make sure that it is at an optimal microbial level before it is dispatch for sale.

We have a range of SC27 product that are all based on the same prinicles but may ahve some extra additives for a particular purpose. 

* Sc27 PLUS for general use

*SC27 Turf & Shrubs 

*SC27 PLUS organic- currenly awaiitng OMRI organic certification


Are the organisms in SC27 genetically modified?

NO! There are no genetically modified organisms in SC27. All the organisms in SC27 are found naturally in the soil.

What does SC27 do for plants?
SC27 can help improve crop growth in several ways.

• The organisms in SC27 prodcuts are selected to be rhizosphere competent. This means that they are able to colonize and survive on the root surface as the roots grow and expand        throughout the soil.

• The organisms in SC27 prodcuts give off various compounds that stimulate root growth and development. A well-developed root system is the foundation for a good crop yield.
• The organisms in SC27 products are able to solubilize certain plant nutrients and help make them available to the crop. 

Why are soil microorganisms so important?
Soil microorganisms are vital to the health and productivity of the soil. Soil microorganisms are responsible for much of the nutrient cycling and nutrient availability, especially for critical nutrients such as nitrogen (N) and sulfur (S). Soil microbial activity also affects the availability of many other secondary and micronutrients. Helathy soil microbial activity colonizes the root surface and can actually help form physical barrier to plant pathogens.

Can SC27 help improve soil structure?
Yes, it may help improve soil structure. Soil microorganisms provide the "glue" that helps hold soil particles together to form stable aggregates. In other words, they help promote good soil structure. A healthy, diverse microbial population helps promote good soil structure.

What roles do soil microorganisms play in soil productivity?
Soil microorganisms play a critical role in soil productivity. They are the engines that drive the cycling of many nutrients. Soil microorganisms decompose crop residues and other organic materials applied to soil. Soils with depressed microbial populations may exhibit poor physical conditions as well as lowered productivity. Conversely, soils with abundant microbial populations are usually more productive and more healthy.

Where else in SC27 being used?
SC27 soil inoculant is used USA, Australia, New Zealand, the United Kingdom, Mexico and Central America, China, Cambodia, Indonesia, Egypt, United Arab Emirates, and South Africa.

SC27 and Environmental Quality

Healthy soils play a crucial role in maintaining and improving environmental quality. Soils can help detoxify pollutants and reduce pollution. On the other hand, soils can also be a source of nutrient contamination of surface and ground water if they are not managed properly. A diverse microbial population can help minimize the potential for pollution from agriculture.

Can SC27 be used in organic production?
SC27 soil inoculant is currently not listed by the Organic Materials Review Institute (OMRI) for use in organic production. Applications for Organic registration has been submitted and awaitng OMRI approval

How can SC27 help improve environmental quality?
Nutrient contamination of surface and ground water is a serious environmental issue in many areas. Soil microbes can help reduce nutrient losses by trapping the excess nutrients and preventing them from leaching through the soil or running off the soil. The nutrients are then slowly released and are available for plants to take them up.

Are there other ways that SC27 can help improve environmental quality?
Yes, by increasing root growth and healthy soil conditions leads to more healthy and productive plants.  More productive plant sin terms of yield mean more crop residue to reduce soil erosion. An increased crop yield also take up more nutrients from the soil meaning fewer nutrients that end up in surface or ground water.  This means increased nutrient efficiency and less pollution.

SC27 Storage, Handling and Application

SC27 prodcuts are living products and special care must be exercised in the storage, handling and application to help assure that the organisms remain viable and healthy. Rigorous quality control/quality assurance procedures are followed to be sure that we produce consistently high quality product.

How should SC27 be stored?
SC27 can be stored at room temperature (75 F) for up to twelve months.  Storage at high temperatures will greatly shorten the storage life. Do not store in direct sunlight. Do not allow SC27 to freeze.

What is the recommended application rate of SC27?
The recommended application rate depends on the crop being grown, the soil conditions and the crop management. Generally speaking, application rates range from 3 to 6 oz. per 50 gallons of water.  Be sure to read and follow the label instructions when applying SC27. 

How can SC27 soil inoculant be applied?
The organisms in SC27 colonize the roots and the application technique chosen should place the organisms in the root zone or near to the root zone. A number of application methods have proven successful.

SC27 soil inoculant may be applied in most conventional agricultural spray equipment, in irrigation systems, or injected with the seed at planting. SC27 soil inoculant may also be used as a seed treatment. Treated seeds should be planted within 24 hours of inoculation. The organisms in SC27 soil inoculant are sensitive to the ultraviolet (UV) light in sunlight so SC27 soil inoculant should be incorporated into the soil as soon after application as possible. The incorporation can be mechanical or with irrigation or rainfall. Surface soil applications should be made late in the afternoon to minimize the exposure to sunlight.

SC27 can be applied in low-volume systems such as mini-sprinklers and drip irrigation.

How long do the organisms in SC27 survive in the soil?
The organisms in SC27 will survive on the roots of the crop for the growing season. The organisms live on actively growing roots so the organisms die when the crop is harvested and the roots die. SC27 should be re-applied to each crop. SC27 should also be reapplied to perennial crops that go dormant in the winter.

Can SC27 be in transplant operations?
Yes, SC27 can be used in transplant operations. The SC27 should be diluted 1:10 with water. The diluted SC27 solution can then be used as a root dip solution or the diluted solution can be applied to the container plants 2 to 4 days prior to transplanting.

What effect will chlorine used to clean irrigation lines have on SC27 soil inoculant?
The chlorine is used to kill various microorganisms and it will kill the organisms in SC27. Be sure to flush the lines thoroughly following chlorine treatment to prevent death of the beneficial organisms in SC27.

What soil conditions are best for SC27 soil inoculant?
SC27 soil inoculant can be used on all soil types with certain cautions. The soil must not be extremely dry because the microorganisms in SC27 soil inoculant must be able to survive and flourish. Soils that are excessively acid or alkaline may adversely affect the microorganisms in SC27 soil inoculant. SC27 can be used on soils with pH values between 5 and 9 although the organisms do best when the soil pH is near neutral. Soils should contain at least 500 ppm calcium and the organisms do best with 900 ppm calcium or more.

On what types of crops can I use SC27 soil inoculant?
SC27 soil inoculant contains a wide range of soil microbes and may be used on a wide range of crops. Read and follow label instructions or consult our Technical advisors for the best recommendations for your crops.

What is the optimum temperature for SC27 application?
The optimum temperature for application is about 75 F but successful applications can be made anytime the soil temperature is acceptable for planting.

CAN SC27 be used in flooded soils?
No, the organisms in SC27 are aerobic, which means that they require oxygen. The organisms will withstand short periods of flooding, such as during irrigation but will perish if deprived of air for an extended period of time.

Can I apply SC27 soil inoculant with liquid fertilizers?
No, SC27 soil inoculant should not be mixed with fertilizers because the high concentration of fertilizer will kill the organisms in SC27. SC27 can be applied with diluted fertilizer solutions such as in irrigation water or greenhouse operations.

Can I apply SC27 soil inoculant with other agricultural chemicals?
Testing is underway to determine the compatibility of SC27 with various pesticides. At the present, we urge caution. Preliminary results indicate that SC27 can be applied with fungicides or used as a seed treatment when seeds have been treated with a fungicide.

Can I use SC27 soil inoculant if I use a soil fumigant?
Yes, although some precautions must be taken to help assure success. Do not use a fumigant after applying SC27 or the fumigant will kill the beneficial organisms in SC27 along with the harmful organisms. Wait at least three days after using a fumigant before applying SC27; a longer delay may be needed with certain fumigants. Be sure to read and follow all label instruction on all soil fumigants.

Should I change my fertilizer program if I use SC27 soil inoculant?
Generally, no. SC27 soil inoculant is not a replacement for a sound nutrient management program but rather, it should be used to help promote improved soil microbial activity.