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The effect of cutting frequencies (40, 60 and 80 days) and stubble height (60 and 90 cm) on forage yield and chemical composition of pigeon pea (Cajanus cajan) were evaluated under field conditions, at Porto Velho, Rondônia. Cutting frequency at 80 days, with 60 or 90 cm stubble height, provided the higher dry matter yields and calcium contents. Nitrogen, phosphorus and magnesium contents were did not affected by cutting regimes. The higher potassium contents were obtained at 60 days cutting frequency, irrespective to stubble height. Frequents cutting, mainly at low stubble height, showed be inadequate to legume management. These data indicated that cutting frequency at 80 days, at 60 or 90 cm stubble height, were optimal for obtain higher yields with more forage quality.

Efeito de regimes de cortes sobre a produtividade e composição química do guandu (Cajanus cajan) em Porto Velho, Rondônia