| Abstrakt: |
In the experimental field of the Department of Crop Science at the Agricultural University-Plovdiv during the three harvest years-2018, 2019 and 2020 a field experiment has been conducted. Five sunflower hybrids, all of the Express tolerant hybrids group have been studied: P64LE25 (standard); LG 59.580 SX; Subaro HTS; ЕS Arcadia SU; Magma SU. The beginning of the main phenological stages has been recorded: sowing, germination, second pair of leaves, the fourth pair of leaves, budding, flowering and ripening. Depending on the dates of the phenological stages, the duration of the inter-stage periods is calculated. [ABSTRACT FROM AUTHOR] |
