... tissues. 152 Handbook of Plant Nutrition CRC_DK2972_Ch006.qxd 6/14/2006 7:04 AM Page 152 178 Handbook of Plant Nutrition 152 . P.C.R. Fontes, M.A. Moreira, R.L.F. Fontes, A.A. Cardosa. Effects of zinc fungicides ... Physiol. Plant 67 :159 –165, 1986.70. E.L. Johnson, T.A. Campbell, C.D. Foy. Effect of soil pH on mineral element concentrations of twoErythroxylum species. J. Plant Nutr. 20(11) :150 3 151 5, 1997.71. ... certain stages of plant development, such as flowering and fruiting, may makeplants more susceptible to magnesium deficiencies. In camellia (Camellia sasanqua Thunb. 156 Handbook of Plant Nutrition CRC_DK2972_Ch006.qxd...