Abstract
Tree foliage is a nutrient-rich and important source of green fodder to sustain the livestock during the lean winter period of a season in the low and mid hill regions of Indian Himalaya. Knowledge of the variations in mineral nutrient composition of the foliage during an active growth season helps in determining optimum lopping time to harvest nutrient-rich fodder. Changes in the nutrient concentrations of Albizia stipulata and Ougenia oojeinensis foliage during the annual growth season were studied to find out an optimum lopping time. Two dissimilar trends in variation of nutrients in foliage with the advancement of growth season were observed. These were: (1) depletion/dilution of N, P, K and S and (2) accumulation of Ca, Mg and Na. The depletion was more from October onwards, and accumulation reached to its maximum in November-December. Therefore, the period from October to December, preferably November, can be regarded as optimum lopping time for A. stipulata. For O. oojeinensis, the corresponding time could be September to November, preferably October. Ougenia foliage contained higher concentration of N, P, Ca, Mg, and Na than that of Albizia.
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