This farmer reconstituted compound nitrogenous fertilizer and sprayed it as topdressing on her maize. End results! chunk of the maize got scorched. To make matters worse, knapsack which was previously used in spraying contact non-selective herbicide was reused without been thoroughly washed. According to agricultural officer I solicited advice from for my own consumption. Only straight uric fertilizers like Urea can be reconstituted and sprayed if that have to be. Otherwise ammonium sulphate nitrate and calcium ammonium nitrate are usually applied as a top-dressing of the soil, being fairly soluble in water taking care for it not coming onto contact with leaves.