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What are bio stimulants?

what are bio stimulants?
Author: Jan Krouwer | Latest update: 10-03-2020

Bio stimulants are increasingly being used to strengthen crops. These are products that have an effect on, in particular, the growth and resistance of plants. Bio stimulants have experienced significant growth over the last few years. These products are of natural origins, making them fit in better with an integrated crop protection system. In this article, our specialists explain more about bio stimulants.

How do biostimulants work?

Bio stimulants are products that positively influence the growth and resistance of plants, resulting in lower pest and disease burdens in the crops and/or higher yields. They do this by making the crop more tolerant of abiotic stress (for example, drought or heat stress) and by converting substances for easy absorption of nutrients by plants. This ultimately ensures quality improvement in the crop. Please note that bio stimulants have no effect on biotic stress (i.e. diseases and pests). 

The advantages of bio stimulants

The use of bio stimulants has a number of advantages:
  • They can contribute to a more resilient crop.
  • They can contribute to a stronger root environment of the crop, which can lead to a better harvest.
  • Bio stimulants do not have adverse effects on natural enemies and can therefore be used in an integrated crop protection strategy.
  • Bio stimulants have a small ecological footprint.
  • No MRL is left after using bio stimulants, which means they do not affect the MRL.

Please note: bio stimulants are not crop protection agents and therefore they have no direct effect against diseases and pests. They work preventively by strengthening the crop, but will not directly eliminate harmful organisms in case of high disease or pest burdens.  

Types of bio stimulants

Bio stimulants can therefore have three different effects:
  • They can reduce abiotic stress. 
  • They can improve nutrient absorption through the plant. 
  • They can contribute to improving the overall quality of the plant. 

Related products

Storage of bio stimulants

The use of bio stimulants, of course, requires consideration of storage of these products. Many crop protection agents are subject to having a registration number, which also involves special storage requirements. Unlike these chemicals, bio stimulants do not need a registration number. This means that these products do not need to be stored in chemical storage cabinets either. In practice, we still see this happening regularly, which we believe is a waste of limited space in a chemistry cabinet.

It is important when using bio stimulants to check the labels. These have information about several facts, including the action of the product, the recommended dosage, application and a number of safety aspects.
For example, it may indicate the appropriate temperature for storing the product, but also what risks the product can pose to the environment. This information not only enables the maximum benefits from the product to be obtained, but it also provides additional assurance related to safety 

Of course, for additional information about the product, the SDS can always be consulted.

Questions about bio stimulants

Do you have questions about the use of bio stimulants, or would you like individual advice? Please contact crop protection specialist Jan Krouwer via the form below. We will then contact you as soon as possible – on weekdays even within 24 hours.


Jan KrouwerAbout Jan Krouwer
Jan Krouwer, specialist crop protection at Royal Brinkman, has had more than 40 years of experience in the sector. He is the first point of contact regarding growth regulation and rodent control. He thinks that the best part of his job is the dynamics within the sector. "The fact that I have been working in the same sector for so long, has everything to do with the continuous innovation. Every year is different and usually that brings new challenges!"





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