In soils of Peshawar, Mardan, and Charsadda Valleys of Khyber Pakhtunkhwa, Pakistan, where micronutrients are usually low (Ihsan 1986; Khattak and Perveen 1987; Iqbal, Shah, and Muhammad 1987) and not applied as chemical fertilizer in general, their monitoring and evaluation deserve the utmost priority under the prevailing conditions of subsurface/tile drainage system.