REGOPLAN – this is a plant growth regulator containing a complex of biogenic microelements and natural components. The preparation is used to increase the yield of various crops, including cereals, vegetable, berry (e.g., strawberry) and technical crops. It can be used both for retail sale to the public and for professional application in the fields. The composition of the preparation includes the growth regulator "Radostim", potassium salt of alpha-naphthoic acid, a complex of biogenic microelements, and the pharmaceutical agent "Diamantoviy Zeleniy". Also included is Avermectin C – a natural complex of 8 individual avermectins. This makes the preparation effective for use at various stages of plant growth. REGOPLAN is applied by treating seeds or spraying crops. The recommended dosage is up to 1.0 liter per hectare. The preparation can be used as part of a comprehensive approach to crop care and productivity enhancement.