On 27-28 May 2021 a doctoral student at the Siedlce University Doctoral School within a discipline of agriculture and horticulture M.Sc. Karol Remiszewski attended the 1st International Scientific and Practical Conference “Theoretical and Practical Aspects of the Development of Horticulture, Vegetable Growing and Viticulture”, on the occasion of the 75th anniversary of the prof. I.P. Hulk Department of Horticulture and Vegetable Growing and the 165th anniversary of the Agricultural University in Dublany. During the conference he gave a presentation on Production effects of boron on onion cultivation.