Tropical Grasslands 31 : 529-537 Jones RJ , Galgal KK , Castillo AC , Palmer B , Deocareza A , and Bolam M ( 1998 ) Animal ... Lowry JB , Gutteridge RC , Bray RA and Wildin JH ( 1991 ) Sustaining productive pastures in the tropics 7.

The dominant festure of pastures established after forest clearing is pasture degradation , this being the main ... to develop improved low input technologies for increased and sustainable livestock production in the humid tropics .