Amino acids as foliar application is a relatively new phenomenon. In some countries it is already widely known (Spain, Italy), whereas in other countries there is a conservative reluctance to use amino acids in agriculture.

Amino acids, containing substantial amounts of Nitrogen, are essential to plants:

“Nitrogen in general and amino acids in specific (..) plays essential roles in all plant growth and development processes, including transport, cell division and catalysis of biochemical reactions. Plant availability of N is therefore tightly coupled to plant productivity in both natural and agricultural ecosystems. Indeed, high applications of N fertilizer together with the development of high-yielding crop varieties were major drivers of the enormous increase in crop production during the “green revolution” in the 1950’s and 1960’s.” (Sandra Jämtgård, 2010)

Amino acids are the building blocks of life itself, of protein. Proteins are one of the major categories of both the structure and the chemistry of living things. Amino acids may be linked together almost indefinitely to form more than 50,000 different proteins. A healthy plant is continually breaking down proteins into individual amino acids, and assembling them into amino acid complexes as needed. The primary function of amino acids is to furnish the essential material for duplication of genetic code, for cell division, and for forming tissue. Amino acids are involved in the metabolism of hormones and enzyme systems.

Amino acids as precursers of plant hormones. When amino acids are applied on plant tissue, a plant can synthesize the amino acids into plant hormones, shifting the hormonal balance to the plants benefit.

Triptophan to indol acetic acid
When amino acids and trace elements are chemically bonded, permeases or transporters will be formed enabling a plant to avail of all necessary minerals throughout the plant. Without free amino acids to form the needed hook-ups, vitamins and minerals cannot do their job.

Individual trace elements are essential to the plant as well. Being protein bonded, the trace elements are easily transported within the plant. Different minerals, such as Iron (Fe), Copper (Cu), Zinc (Zn), Manganese (Mn), Molybdenum (Mo) and Boron (Bo) have different benefits for plant growth. In intensive horticulture and floriculture, these elements are usually applied as mono-fertilizers. The benefit for using CROPMAX is that the trace elements are protein bonded and therefore more easily absorbed by plants. In extensive crops, there is no alternative to use complex nutrient mixes as CROPMAX. Applying CROPMAX (with pesticides or fungicides) is therefore an easy job giving many benefits.


Nitrogen deficiency

Magnesium deficiency

Iron deficiency

A further benefit to foliar application is the ability to apply trace elements even when antagonism in the soil prevents root uptake. Deficiencies caused by a lack of trace elements or by fixation in the soil have different harmful outcomes. By applying trace elements directly on the leaves, one circumvents fixation and the effect will be fast and efficient.