EFFECT OF MINERAL AND BIO-FERTILIZERS ON THE PHENOLOGICAL DEVELOPMENT OF DOUBLE-CROPPED MAIZE AND SUNFLOWER
DOI:
https://doi.org/10.47390/ydif-y2026v2i19/n10Keywords:
second crop, maize, sunflower, phenology, vegetation period, mineral fertilizer, Ekogumin, NPK, growth stages.Abstract
The article evaluates the effect of mineral fertilizers and Ekogumin at 250 kg ha−1 on maize and sunflower phenology when grown as second crops after winter wheat in 2023. Treatments under identical NPK backgrounds were compared by calendar dates of growth stages. Ekogumin advanced emergence and vegetative stages by 1–2 days and reproductive stages by 2–4 days. In maize, vegetation was shortened by one day under low and medium NPK rates, while sunflower remained at 89–90 days, with differences expressed mainly in earlier stage occurrence.
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