Full explanation
Ukrainian chernozems and other soils are often latently deficient in B (sunflower, rapeseed), Zn (corn), Mn (cereals on wet and alkaline soils), Mo (soybean, legumes). Typical crop recipes: sunflower — B+Zn+Mo at 4–6 leaf stage; corn — Zn+Mn at V4–V6; winter wheat — Cu+Mn at BBCH 30–32; rapeseed — B+Mo at rosette + B at bud stage; soybean — Mo to strengthen Bradyrhizobium symbiosis. Popular products: Yara Vita (Mantrac, Zintrac, Bortrac), Nanovit (UA), Intermag, Valagro Brexil, Quantum Fertis. April 2026 price: UAH 250–600/L [VERIFY] — cost per foliar pass UAH 80–300/ha. Trade-off: critical under low soil micronutrient levels, but does not replace balanced NPK. Don't mix B with Ca-containing products in tank mixes — insoluble precipitate risk.