Interaction of Biostimulants and Fertilizers in Crops

Introduction

The interaction of biostimulants and fertilizers is a topic of growing interest in sustainable agriculture. Biostimulants are products that promote plant growth and development through natural mechanisms, while fertilizers provide essential nutrients. Understanding how these two types of products can work together can optimize crop health and productivity.

What are biostimulants?

Biostimulants are compounds that stimulate natural processes in plants. These can include extracts from unicellular algae, microorganisms, and other organic compounds that enhance the plants' ability to absorb nutrients, resist abiotic stress, and improve their development. Their use has expanded in recent years due to the demand for more sustainable agricultural practices. For more information on these products, see our article on agricultural biostimulants what they are. You can also read about biostimulants tomatoes Colombia and the use of biostimulants. Additionally, to learn more about organic farming biostimulants, see our article on the best options in 2026. You can also read about Agricultural Biostimulants What They Are and How They Work. Furthermore, for more information on the use of biostimulants in olive trees.

Types of biostimulants

• Beneficial microorganisms: These include bacteria and fungi that improve nutrient availability. For example, species of Rhizobium and Mycorrhizae can enhance nitrogen and phosphorus uptake, respectively, leading to more robust plant growth. A study showed that inoculation with Mycorrhizae can increase phosphorus uptake efficiency by 50%.
• Plant extracts: Such as seaweed extracts, which provide plant hormones and bioactive compounds. One of the best-known examples is Sargassum extract, which has been shown to increase the activity of enzymes that facilitate nutrient uptake under stress conditions. Studies have indicated that these extracts can boost nitrate reductase enzyme activity, improving nitrogen assimilation.
• Organic compounds: Substances that promote soil biological activity. Humic and fulvic acids, derived from the decomposition of organic matter, can improve soil structure and increase water and nutrient retention. Research has shown that applying humic acids can increase soil water retention capacity by 20%.

Interaction between biostimulants and fertilizers

The interaction between biostimulants and fertilizers can be positive when properly understood. While fertilizers provide the necessary nutrients for growth, biostimulants can enhance the uptake of these nutrients by plants. For more information on biostimulants vs fertilizers differences, check out our related article. Additionally, consider efficient irrigation strategies. You can also read about biostimulants in vineyards. It is also important to consider how berry quality can affect crop quality, as well as irrigation in berries. Furthermore, for more information on coffee bioprotectants.

Effective synergies

Biostimulants can increase the effectiveness of fertilizers, allowing for a reduction in applied doses. This not only contributes to sustainability but can also reduce costs for farmers. For example, a study conducted on maize crops showed that combining a biostimulant based on seaweed extracts with a reduced dose of nitrogen fertilizer increased crop yield by 15% compared to using fertilizers alone. This type of synergy translates into significant input savings, which is crucial for crop profitability. For more information on nitrogen fertilization in maize, see our related article. Additionally, learn more about the synergy between biostimulants and nutrients.

Interaction mechanisms

The mechanisms through which biostimulants interact with fertilizers are diverse. One of the most important mechanisms is the enhancement of microbial activity in the soil. Biostimulants can promote the proliferation of beneficial microorganisms that break down organic matter and release nutrients in forms easily assimilated by plants. For example, the use of Trichoderma harzianum has shown a remarkable ability to increase phosphorus release in soils containing phosphate fertilizers. Studies indicate that the combination of Trichoderma and fertilizers can increase phosphorus availability by 40%. Additionally, it is important to address nitrogen deficiency in olive trees and nitrogen deficiency in avocado. For more information on the effect of biostimulants on olive trees, see our related article. It is also relevant to consider the use of ammoniacal nitrogen in agriculture and urea nitrogen in agriculture. Furthermore, the use of probiotics can be an effective strategy to improve soil quality in greenhouses. For more information on the use of biostimulants in greenhouses.