Factors that affect micronutrient availability a) Solubility of the micronutrient (affected by factors such as pH) b) Percent of exchange sites that are occupied by the micronutrient c)Soil organic matter (1)Affects the balance between adsorption and desorption (2) Organic matter is also involved in the chelation processa) Solubility of the micronutrient (affected by factors such as pH) b) Percent of exchange sites that are occupied by the micronutrient c) Soil organic matter (1) Affects the balance between adsorption and desorption (2) Organic matter is also involved in the chelation process Factors that affect micronutrient availability