Foliar fertilization, which complements successful artificial fertilization, is becoming more and more widespread in Hungary as well, which provides the plant with a more reliable or additional supply of nutrients, especially in drier periods. In a year with a lack of rainfall - when the plant is not able to absorb the right amount of nutrients from the soil - the nutrient applied through the leaves can be a huge help, which can play an important role in its development, crop set, and content. Our research below serves to prove this, where in the case of sunflower we examined whether foliar fertilization results in an increase in yield and oil content in a year with a very low rainfall and atmospheric drought. The experiment was carried out in 2022 in Szarvas. In the experiment, in the case of 4 nutrient levels with different fertilizer doses, we also used additional foliar fertilization treatment, which was examined in 4 repetitions. The 4 different treatments were as follows: Control (without fertilization), Environmental protection level, Balance level, Genesis regional. In order to investigate the utilization of the applied nutrients, we carried out various yield tests and calculations, as well as internal content measurements. During the experiment, it was established that foliar fertilization resulted in a higher crop yield both in the case of no fertilization and in the case of the 3 nutrient levels, and it also increased the oil content of most treatments.

sunflower, foliar fertilization, dry season, oil content

agronomy

Presentation: poster