ED 33 sunflower hybrid is a simple mid-early variety designed for cultivation using the "Sumo" technology, which provides effective control of all known ragweed species, including G and H. This hybrid is characterized by high yield and resistance to the herbicide Express, enabling effective weed control and increased crop productivity. The plant is of medium height, without branching, with a semi-downward-facing, medium or large-sized head, and a strongly convex seed side. Leaves are medium-sized, green, with moderate blistering and serration, and ray florets are yellow, tubular-shaped, orange-colored, without anthocyanin pigmentation on the stigma. ED 33 is included in the State Register for the North Caucasus region and was registered by ASPRIA SEEDS S.A. The average seed yield in the region is 22.6 c/ha, with a maximum recorded yield of 34.8 c/ha. The oil content in the seeds is 50.6%, providing an average oil harvest of 14.0 c/ha. The hybrid demonstrates resistance to white mold and low ragweed infection under field conditions, making it a reliable choice for farmers seeking stable and high yields. To protect ED 33 sunflower from weeds, herbicides are recommended, which are divided into pre-emergence and post-emergence types. Pre-emergence herbicides are applied to the soil before seedlings emerge, creating a barrier against weed seed germination, while post-emergence herbicides are applied after seedling emergence, effectively eliminating dicotyledonous and annual weeds. The use of herbicides containing active ingredients such as acetochlor, prometryn, metolachlor, cyclophosphophenyl-p-ethyl, imazamox, and imazapyr contributes to increased yield and protection of ED 33 sunflower crops.
