Micronutrients are a fine mix of various elements like Zinc (Zn), Copper (Cu), Manganese (Mn), Iron (Fe), Boron (B), and Molybdenum (Mo). These minerals nourish horticultural crops and crops such as cereals, pulses, oilseeds, spices, and plantations. Despite the low demand, critical plant functions are hindered if micronutrients are unavailable. It results in plant deformations, lower yield, and diminished growth. Thus, micronutrients are crucial for plant growth and play a vital role in balancing crop nutrition.
Micronutrients deficiency can be found by visual symptoms on crops and by testing soil and plant tissues. To understand these visual symptoms, it is necessary to know each micronutrient’s role in plant growth and development.
Role of Micronutrients in a Plant:
- The element Zinc plays a very vital role in plant hormone balance and auxin activity, and it is also important for the growth, division of cells, and the production of husks of grains.
- Iron assists in the biological process and cell growth in plants. It is a composition of enzymes essential for chlorophyll synthesis, photosynthesis.
- Boron element will majorly helps to enhances flowering blooms and develops a uniform ripening process, and it is important in sugar transport, Cell division, and amino acid production.
- Manganese plays a vital role in photosynthesis, chloroplast production, is a cofactor in many plant reactions and activates enzymes.
- Copper stimulates enzymes required for photosynthesis.
Molybdenum plays a vital role in the growth of leaves and the prevention of diseases in plants. Moreover, it is involved in nitrogen metabolism, essential in nitrogen fixation by legumes.
Symptoms of Micronutrient Deficiency:
- Excluding the Molybdenum, other micronutrients are recognized as weakly mobile or immobile in plants. The deficiency symptoms appear severely on the newest plant tissues, whereas for Molybdenum deficiency, symptoms appear first on the oldest plant tissues.
- Zinc deficiency results in stunted growth, lessened internode length, young leaves are smaller than average.
The deficiency of Iron causes chlorosis or yellowing between the veins of new leaves.
- Deficiency of Boron causes the light general chlorosis, death of growing point, deformed leaves with areas of discoloration.
- Manganese (Mn) deficiency causes chlorotic mosaic patterns on leaves.
- The deficiency in copper results to the overall chlorosis, leaf tips die back, twisted tips, and turgor loss in young leaves.
Molybdenum deficiency is similar to ordinary nitrogen deficiency – general chlorosis (yellowing) of young plants and the chlorosis of oldest leaves.
Signova provides micronutrients in the form of EDTA chelates and Amino Acid Chelates.
Chelation is a bonding process of ions and molecules to metal ions. Chelates are complex compounds consisting of a central metal atom attached to a large molecule, called a ligand in a cyclic or ring structure.
EDTA, which is also known as Ethylene Diamine Tetra-Acetic Acid. It is a chelating agent, which means its molecular structure allows it to bind to heavy metals. Ligands are organic compounds like Ethylene Diamine Tetra-Acetic Acid (EDTA) produces steady chelates with micronutrients. It keeps these metal ions in a soluble form supplying nutritional benefits to the plants.
Amino Acid Chelates are natural bio-organic chelating agents. A bio-organic chelating agent functions as an effective delivery system for nutrients; Signova Pro-range contains amino acids derived from soy proteins fortified with nitrogen.
Micronutrients are utilized for Soil application, foliar spray, and fertigation.