Zoz, T., Steiner, F., Seidel, E.P., Castagnara, D.D. and Souza, G.E. de 2016. Foliar application of calcium and boron improves the spike fertily and yield of wheat . Bioscience Journal. 32, 4 (Jul. 2016), 873–880. DOI:https://doi.org/10.14393/BJ-v32n4a2016-29714.