Plant and Soil Science

The leading role in ensuring the productivity of crops is photosynthesis, which takes place in the leaves of plants and is an extremely important phenomenon. The goal was to determine the photosynthetic activity of winter rape plants. The following tasks were set: to determine the area of the sheet assimilation surface, the net productivity of photosynthesis and the photosynthetic potential of winter crop sowing, depending on the dates of sowing and micronutrient fertilization. The research was conducted on the experimental field of the NULES of Ukraine "Agronomic Research Station", located in the Pshenichne village, Vasylkivsky district, Kyiv region. The relief of the plots is flat, the ground is typical of black currant. For the determination of experimental research, commonly used methods were used Moiseychenko V., 1996 and Gritsaenko Z., 2003. Experiment three factor: A factor - used varieties of winter rape Snihova Koroleva, Andromeda, Vesuvius; Factor B - Chelating microfertilizers Wuxal Microplant, Therios and Ascofol; Factor C - sowing dates August 11, August 21; August 31. The article presents the results of the formation of the photosynthetic potential of winter rapeseed, depending on the growing conditions. It is established that in the Right-Bank Forest-Steppe of Ukraine, at different seeding times, the Snihova Koroleva varieties showed better when using Wuxal Microplant and Vesuviy in processing Wuxal Microplant and Therios. The best net productivity of photosynthesis was noted at the optimum time of sowing in the rapeseed varieties of the winter Vesuviy-Wuxal Therios and the Snihova Koroleva-Wuxal Microplant. The photosynthetic potential of the winter rapeseed corresponded to the varieties listed above. 

winter rapeseed, sowing time, microfertilizer, photosynthesis, leaf surface area, net productivity of photosynthesis