AgriGrow DTPA-Fe 11% is a chelated, water soluble, yellow powder form of iron  and is recommended for prevention and correction of iron deficiency in crops. The preferred application method is soil application to correct and prevent iron deficiency, even though foliar application is possible to fix the deficiency. AgriGrow DTPA-Fe 11% is recommended to use in acid to mildly alkaline soils. When applied foliar, the AgriGrow DTPA-Fe 11% may be dissolved in water alone or in combination with most pesticides. After the correct dilution is made, the spray solution should be buffered to pH 6-6.5.