As is true for humans, minute quantities of specific molecules can have a significant effect on plants’ life processes. The art is to know when to apply which product.


One way to apply microbial stimulants is by precision application using natural, fully water soluble capsules. The capsules are positioned near the roots of each plant. This way of application has several advantages:

  1. the microbes are not diluted throughout the soil and therefore have a far larger chance to survive in an otherwise hostile soil environment.
  2. the capsule permits humidity to enter but keeps the microbes in place. This means that the microbes are temporarily protected from the hostile soil environment. By the time the capsule disintegrates the microbes are fully active and at maximum strength to support the young plants and to compete with other soil microbes.
  3. the capsule can be filled with custom-made combinations of nutrients, stimulants and energy containing elements which helps to maximise the positive effects.


Another very effective way to apply liquid stimulants is by spraying. The advantages of spraying compared to application to the soil are that the products are immediately coming into contact with the plant and that there is far less microbial competition on the leaf surface reducing the risk that the product becomes less effective. Yet another advantage of leaf sprays is that the product dose applied per plant can be much better controlled than with applications through irrigation. However, as above ground plant parts are directly exposed to the drying power of the air, it is very important to choose the right timing for spraying, which is even more important when microbial products are being sprayed. It goes without saying that phytotoxicity of concentrated leaf sprays can be an issue for which reason we always advise to test new spray/plant combinations.

Irrigation lines

In case precision application or leaf sprays of stimulants can not be carried out, application through irrigation lines is a third option. However – and this is not common knowledge – any product that contains organic material increases the risk of clogging the lines! The reason is simple, organic materials are food for microbes and microbes produce slime. Once the circumstances are right, microbes will grow and will start to clog up parts of the system. As is the case with chemical fertilisers, some preventative measures can be taken to minimise the risks of clogging and also a good choice needs to be made between the type of products that are being applied. Some products tend to be more prone to clogging than others. Please do not take risks, always consult the producers before applying organic products through your irrigation lines.


All our advice and products combine the smart use of Energy, Nutrients and Stimulants. We generate practical, simplified but scientifically sound advice and all Croptivate® products contain these three functional ingredients.