Gray, John T. W.2016-05-122016-05-122016-05-12https://hdl.handle.net/2139/42051Forage plants -- Harvesting -- Machinery -- Economic aspects -- TropicsPennisetum purpureum -- Harvesting -- Machinery -- Economic aspects -- TropicsGrasses -- Feeding and feeds -- Harvesting -- TropicsReport on the mechanisation of collection of green forage material for stock feed, comparable costs of different systemsTheses