Peanut or Groundnut (Arachis hypogaea L) is among the major leguminous crops grown in the world. Its maturity period varies in the maximum percentage of mature fruits at harvest (Young and Mason, 1972). However, the subterranean nature of fruiting and its indeterminate growth habit makes it difficult to determine when to harvest to ensure optimum yield (Jordan et al., 2005; Jordan, 2006a). Thus, most farmers link change in morphological features of the plant: yellowing of foliage, dropping of older leaves, hard pods, visible net venation, seed color etc. to determine maturity of pods....