Abstract
Determinations have been made of the amino‐acid composition of protein extracts from the dried green tissues of two perennial tropical grasses—Brachiaria ruziziensis and Setaria sphacelata, harvested at various growth stages. The relative contributions of the isolated protein N, soluble N, and residual or unextracted N to the total organic nitrogen have also been investigated. The results show general similarities of protein composition and pattern of nitrogen distribution throughout the development of the plants.

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