PS 642 is a mid-season sunflower hybrid designed for cultivation using the ExpressSun® and Granstar herbicide control technologies. It is characterized by high yield and is adapted for cultivation in various climatic zones, including forest-steppe and steppe regions. The vegetative period is approximately 110-115 days, and plant height reaches 145-180 cm. The weight of 1000 seeds varies from 60 to 70 grams, with seed germination rate at 95%, ensuring good crop establishment and development. The hybrid’s oil content reaches 50%, making it attractive for producing high-quality oil. PS 642 exhibits high resistance to a broad spectrum of diseases and stress factors. It demonstrates maximum control over various races of the parasitic weed — bur (A, B, C, D, E, F, G), as well as high tolerance to downy mildew, rust, verticillium wilt, phomopsis, white mold (both head and stem types), and leaf drop. Resistance to lodging and other diseases is rated high, contributing to stable yield formation even under adverse conditions. The maximum recommended dose of Express™ 75 herbicide is 50 grams per hectare, providing effective weed control without harming the crop. PS 642 is a versatile hybrid recommended for cultivation in all regions due to its adaptability and resistance to diseases and pests. It is suitable for herbicide-based technologies, simplifying crop management and enhancing the economic efficiency of production. High drought tolerance and stable yield up to 5 tons per hectare make this hybrid an attractive choice for farmers seeking quality and stable sunflower yields.
