Soler is a mineral complex fertilizer containing microelements such as zinc sulfate, copper sulfate, manganese sulfate, boric acid, and ammonium molybdate. The preparation is used for plant feeding in the form of foliar applications. Soler is produced in two variants: mark "S" for cereal crops and mark "K" for corn, with a dosage of 1 liter per hectare. The product is manufactured by Technotorg-Don, located in Nikolaev, Ukraine. This fertilizer provides plants with a complex of microelements, promoting healthy growth and increasing crop yields. The content of active components in the preparation is strictly regulated, ensuring its effectiveness upon use. Application of Soler allows optimal balancing of nutrients in the soil and ensures plants receive all necessary microelements for full growth and development.