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Receive the material in PDF 👉 https://canalagrobrasil.com/conteudos ✅ School of Fertilization and Fertility (EsAFertil) 8 courses in the area of fertilization: https://esafertil.com/ 👉 Professional training https://esafertil.com/cursosagrobrasil Essential nutrients series for plants Boron is an essential micronutrient for plants, it fulfills a series of physiological functions such as cell wall biosynthesis, in addition to pollen tube growth in plants. Its deficiency symptoms are thickened younger leaves, bronze coloration, brittle leaves and malformed fruits or ears.