Serenade Prime
Serenade Prime

Serenade® Prime

Serenade Prime is a unique, organically certified (ACO and OMRI), product for Australian growers with properties as both a soil ameliorant and biofungicide, that takes plant health to new heights.  When used as a biological fungicide, the biological compounds arrest spore development of disease, and boost plants’ natural defences. As a soil ameliorant, the beneficial bacteria in Serenade Prime boosts root growth and nutrient uptake. Benefits can include; higher yields, better crop uniformity, improved harvest crop quality and improved shelf life.

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Product Type
Active Ingredient
Bacillus amyloliquefaciens strain QST 713
Formulation Type
Suspension concentrate (SC)
Pack Size
10 L
Chemical Group
Application (crop) Comment
Vegetable crops, berries,
tree crops
Serenade Prime is a ready-to-use formulation of the highly active QST 713 strain of Bacillus subtilis for application to
soil to improve bioavailability of soil resources for agricultural and horticultural crops.
Potatoes Soil borne black scurf - rhizoctonia root rot (Rhizoctonia solani) (Suppression only)
Sugar cane Pineapple disease (Ceratocystis paradoxa) (Suppression only)
Bananas Yellow Sigatoka (Mycosphaerella musicola), Common leaf speckle (Mycosphaerella musae) (Suppression only)

Banana Crop Protection Resistance Management Guide

Serenade Prime Banana Foliar and Soil Application Guide

Serenade Prime Horticultural Crop Compendium

Serenade Prime Blueberries Guide

Serenade Prime User Guide

Ideal Application Timing of Serenade Prime in Tree Crops

Mango Crop Guide

Avocado Shed Poster 2020

Serenade Shed Sticker - Avocados

Serenade Shed Sticker - Strawberries

Serenade Shed Sticker - Vegetables

Guide for application through fertigation equipment in bananas

Foliar and soil application guide - Bananas

Managing salt uptake in lettuce with biology

Serenade Prime Product Label

Serenade Prime SDS

Question Answer
Is water volume critical at application?

For spray applications, the volume is not critical other than that the total spray mixture needs to be capable of being delivered with normal commercial equipment. If applied through irrigation, the recommendation is for sufficient irrigation to thoroughly wet the soil in the root zone, but not too much such as to wash the bacteria away from the root zone.

Will Serenade Prime work every time I apply it?

Perhaps not. The bacteria in Serenade Prime become part of an extremely complex biological system. The positive results occur when most of the factors are not too far out of balance. If there are major imbalances then the overall result will be compromised to some extent. As with any agricultural product, environmental factors and agronomic practices present in the crop will be major influences on the benefits achieved from Serenade Prime.

How does Serenade Prime interact with the chemical exudates from roots?

After germination from spores, the bacteria can detect chemicals which are exuded from plant root systems, and will then move towards the plant's root system. If it has been applied close enough, colonisation of the roots can then occur very rapidly. The bacterial colonies utilise the exudates from the roots as their primary source of carbon (food). At the same time, plants benefit through the bacteria converting soil nutrients into useable forms.

How can an application to the soil/root system early in the crop give yield benefits at the end of the crop cycle?

In short cycle annual crops such as vegetables, it is plant vigour in the early stages which often determines yield potential at harvest. Similarly in tree crops, the critical period which is most important for determining fruit or nut yield commences with an effective root flush. If Serenade Prime is applied early and using suitable delivery methods, then the plants have an opportunity to set up without constraints caused by a poorly performing soil/root complex. The benefits can come through at the time of harvest as yield, quality and crop uniformity.

How many times will I need to apply Serenade Prime to a tree crop?

For most permanent tree crops, applications up to 3-4 times per year coinciding with periods of accelerated root growth flushes is suggested as a logical schedule for Serenade Prime replenishment.

I grow 2-3 crops per year in the same ground each season. Do I need to apply Serenade Prime to each crop?

Yes. Applying Serenade Prime at each planting will ensure the optimal root colonization and improved crop access to soil resources. Serenade Prime does not colonize the soil so after one crop is removed, the new crop needs to be treated to allow for effective root colonization and the resultant crop growth benefits.

Will I always see a benefit?

Serenade Prime has the ability to improve a plant’s access to soil nutrients through effective colonisation at the root/soil interface. This improved access to the soil nutrient resources can result in increased plant yield and produce quality, with specific benefits depending on crop type. However, as with any other agricultural inputs, benefits can vary based on soil health, pest and disease pressure or other environmental factors and agronomic practices affecting the crop performance. Maximum benefit will only be realised when all other needs of the crop are met, including disease, insect and weed control.

Will Serenade Prime work better if I apply a higher rate or more often?

In many crops there are density dependant signalling effects among the bacterial colonies which limit the value of applying excess rates. Occasionally there are slight decreases in results when optimal rates are exceeded.

How long will it take Serenade Prime to colonize the roots?

Colonisation is very rapid and begins within hours. In most situations it is effectively completed within 2 -3 days and continues to colonize the roots as they grow and develop.

Does Serenade Prime need to be applied close to the roots?

It is important that the material is applied close enough that after germination the bacteria can detect the root exudate chemicals. Application directly to the root zone is ideal, however, applications have been successfully made using side-dress methodologies (e.g. up to 13 centimetres away from the plant in some crops). This distance might be different in different soil types. For example a poorly structured heavy soil with limited aeration and limited pore spaces may not allow chemical signal detection by the bacteria to the same extent as in a healthy friable loam soil. In that situation the material would need to be applied very close to the existing roots.

How long will Serenade Prime last in the soil?

Based on field data, we know that Serenade Prime does not persist in the soil year to year. Serenade Prime will only colonize roots and not soil, therefore after the plants are removed the bacteria will return to their spore state and be diluted by the natural microbial population in the soil. In a permanent crop situation, the bacteria will also be diluted by the natural bacteria population, and some benefit may be gained from further product applications. Application and re-application recommendations should be based on local experience and will vary based on crop and agronomic practices and conditions.

Is Serenade Prime UV stable and can I leave it on the surface and water it in with irrigation?

Serenade Prime is UV stable and it is possible to apply on the soil surface and water it in soon afterwards. However, the best results will occur when it is directly applied as close to the root zone as possible.

After watering in, how long before it is safe to irrigate again?

Germination of spores occurs fairly quickly after exposure to water, but it may take a couple of days for the bacteria to move towards the roots and colonise. After this is completed, ensuing precipitation is not a threat to washing bacteria and spores away and normal irrigation practices can be maintained.

Do I need to store Serenade Prime in a special way?

We recommend storing Serenade Prime under typical agricultural product storage conditions; in a cool, dry location out of direct sunlight. It does not require refrigerated storage. The product needs to be used within two years of manufacture date for best results.

What is the expected shelf life of Serenade Prime in normal conditions?

Under normal storage conditions, the expected shelf life of Serenade Prime is at least 2 years.

Can Serenade Prime be applied as a tank mixture with liquid fertilisers?

YES. Serenade Prime has been tested for physical compatibility with a broad range of liquid fertilizers and is fully compatible with most common fertilizer products. This is due to the stability of the microbial endospores of this product. Negative effects would result only if the fertiliser placement or concentration is such that plant root or leaf development is damaged or hindered.

Can Serenade Prime be applied in tank mixtures with fungicides and insecticides? 

YES. Serenade Prime is physically compatible with, and can be tank-mixed with pesticides, including fungicides, insecticides and herbicides. This is due to the stability of the microbial endospores of Serenade Prime. However, mixtures of Serenade Prime with insecticides, fungicides and herbicides have not been tested for phytotoxicity to treated plants, and this should be checked over small areas before treating commercial crops.

I use compost and other soil amendments to improve soil health. Are they compatible with Serenade Prime?

YES. Soil amelioration to improve soil health will be helpful to processes of beneficial bacteria colonising root systems. In fact, there have been studies which have shown that Serenade Prime applied in conjunction with compost or soil amendments can improve the soil nutrient/root interface, providing increased plant productivity compared to the soil treatment alone.

What exactly does Serenade Prime do to the roots?

The beneficial bacteria Bacillus subtilis does not directly do anything to plant roots. The bacteria colonise around the root surfaces and stick there very persistently. These colonies thrive on the exudates from actively growing roots. In exchange for the exudates (principally sugars providing a food/carbon source for the bacteria) the bacteria through complex interactions are capable of converting soil minerals into useable forms for the plant to use. It is through this mutually beneficial relationship between the bacteria and the plant roots that the positive benefits to crops can occur.

What is different about Serenade Prime vs other competitor products also based on beneficial bacteria?

Serenade Prime is based on a single isolate of a highly active strain of Bacillus subtilis. This isolate was identified as highly effective on a single peach tree in California many years ago. The product Serenade Prime is a pure and consistent formulation of very robust spores of this single highly active strain. It is a formulation of the highest quality which can be used immediately out of the container. The crop benefits seen from use of this product have been documented in hundreds of field trials in many countries.

Grower Stories

After one of the wettest eighteen months on record at Victorian apple grower Brad Fankhauser’s Drouin property, he had serious concerns for the health of his trees. 
A strong focus on a regenerative and more holistic farming approach, ultimately to help develop horticultural crops that can sustain themselves, has triggered a swing to biological inputs for the Kuzmicich brothers at Carnarvon in Western Australia.
Nick Matthews, Market Development Agronomist for Bayer Crop Science, based in North Queensland, introduces the new banana fungicide crop protection products, Serenade Prime and Luna Experience, explaining how the combined fungicide programme performed equally, if not slightly better than, the current Mancozeb and oil and chlorothalonil programmes.
Nick Matthews, Market Development Agronomist for Bayer Crop Science, based in North Queensland, introduces the new banana fungicide crop protection products, Serenade Prime and Luna Experience.

The introduction of Serenade® Prime, the first biological fungicide from Bayer, has changed the game for Far North Queensland banana growers.

Vegetable grower interest in biological products that improve root development and plant productivity is set to strengthen, especially when they can show a return on investment of $2,600 per hectare.
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Holistic approach to vegetable production

Paul Windolf, from Windolf Farms in the Lockyer Valley, talks about his focus on soil health and striving for continuous improvement. Mixed species cover cropping, crop rotation, compost and the biological product Serenade® Prime are the focus for his holistic approach to vegetable production.
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Using Serenade® Prime delivers soil health benefits and better quality for Hauser Farms

Soil health is very important to Hauser Farms to extend their 50 years of farming, long into the future and Serenade Prime is part of that plan.
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Better plant health starts below the ground with Serenade® Prime

Healthy plants below the ground deliver better quality produce in the shed with Serenade Prime at Hauser Farms.
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Serenade® Prime delivers less waste and higher efficiency for Hauser Farms

Small changes in process have delivered big results in plant health, better quality produce and streamlined packing for Kerry Hauser across his potato, carrot, beans and pumpkins crops.
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Bayer Biologics and Regenerative Farming at Piccadilly Park

Rex Harris of Piccadilly Park talks about his macadamia growing operation and the changes he has made to make his business more sustainable. In particular, he talks about cover cropping, composting and the use of biological solutions in his program.
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Bayer Biologics: Moon Rocks Farm

In this video David Moon discusses why soil health is such an important element for delivering quality produce and how Serenade® Prime plays a role in his production systems.
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VeeJay's Tomatoes

Jamie Jurgens of VeeJay's Tomatoes talks about sustainable farming, soil health and his experiences with Serenade Prime.
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Kalfresh Vegetables

Robert Hinrichsen from Kalfresh Vegetables talks about his farm, changes in farming and his experience with Serenade.
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Covino Farms

Peter Covino of Covino Farms talks about his farming operation, biological growing and his experiences with Serenade Prime.
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Bayer Biologics For Those Who Love The Land

Because it's your land and you love it too.

Ask us a question

If you are a farmer, agronomist or distributor in Australia with a specific product query you can contact our technical helpline. Call 1800 804 479 and speak with our technical enquiries team, or ask us a question below.
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