Stoprost — plant growth regulator containing chloroquinol chloride at a concentration of 750 g/l. The product is used to increase the yield of winter wheat. It is applied once at a rate of 1.0 to 1.2 liters per hectare. The product is supplied as a water solution and is intended for spraying crops. It provides effective action on plant growth, improving agronomic performance. Manufacturer — Himagromarketing (Ukraine), located in the city of Kyiv. The product is registered under number 13982 and registered on May 16, 2021.