The ' Transvaala had the lowest yield amongst the crops studies , with or without nitrogen . The success of ' King grass ' , Pennisetum purpureum as cut fodder during periods of shortage , and the interest of farmers along the Pacific ...

Species Trials The species selected for trials were based in part on studies of the literature of fast - growing species ... in cleared fields and are concerned with dry - season forage crops , or converting land to coffee production .