Edaphoclimatic factors determining sunflower yields spatiotemporal dynamics in northern Ukraine Anastasiia Zymaroieva, Oleksandr Zhukov, Tetiana Fedoniuk, Tetyana Pinkina and Volodymyr Vlasiuk OCL, 28 (2021) 26 Published online: 02 April 2021 DOI: 10.1051/ocl/2021013