Manganese, Boron and Zinc: Is Farming Possible Without Micronutrients?
Plant nutrition in agriculture is not limited to macronutrients such as nitrogen, phosphorus and potassium. Micronutrients, which plants need only in small amounts for healthy growth, play critical roles in plant metabolism. In this article, we take a scientific look at the importance of micronutrients such as manganese, boron and zinc for plants and at how their deficiencies affect agriculture.
What Micronutrients Are and Why They Matter
Micronutrients, or trace elements, are elements plants need in small quantities but that are vital for their growth. They are involved in enzyme activation, photosynthesis, hormone production and the regulation of other metabolic processes. Deficiencies can lead to stunted growth, physiological disorders and low yields.
Symptoms of Micronutrient Deficiency
Iron (Fe)
Iron deficiency usually appears as chlorosis (yellowing) of the leaves. The leaf veins stay green while the tissue between them turns yellow, and the leaves curl upward.
Boron (B)
Boron deficiency causes light-green discoloration and deformities in the terminal buds. Dark spots may also form on the roots, and cracks appear on the stems.
Zinc (Zn)
Zinc deficiency causes the terminal leaves to shrink, reduces the number of buds and leads to mottling on the leaf surface.
Copper (Cu)
Copper deficiency causes a general fading of the plant's color. In citrus in particular, reddish-brown discoloration and abnormal growth can be observed.
Manganese (Mn)
Manganese deficiency symptoms resemble iron deficiency, but the dead tissue on the leaves takes on a rough appearance.
Molybdenum (Mo)
Molybdenum deficiency causes yellowing of the leaves and reddish-brown spots at the tips.
How Micronutrient Deficiency Affects Agriculture
A lack of micronutrients disrupts the plant's metabolic functions, impairing its photosynthetic capacity, enzyme activity and hormone balance. The result is stunted growth, lower product quality and yield losses. That is why supplying micronutrients at balanced and sufficient levels is critical in farming.
Microbial Fertilizers and Micronutrient Uptake
Cherry Mic's products are not micronutrient fertilizers; they are microbial fertilizers made with native bacterial strains and do not contain manganese, boron or zinc. However, how available the nutrients in the soil are to the plant is closely linked to microbial life in the root zone.
For example, micAP, with its Azotobacter chroococcum and Pseudomonas fluorescens, supports nitrogen and phosphorus uptake and, in calcareous, high-pH soils, iron uptake. In areas with micronutrient deficiencies, using a microbial fertilizer alongside a nutrition program planned on the basis of soil and leaf analysis can be a complementary approach that supports root development and soil biological activity.
Biotechnologist, Yeşim VAROL
