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PROGRESS ON THE FARM 19623 4
INTENSIVE USE OF 6RASS BY BEEF CATTLE 13
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80 units acreage ad lib ammonium nitrate animals anthelmintic applied April arable August autumn average beans beef Benomyl Boxworth break crops bulls calf calves Cappelle cattle cereal chitting clover compared concentrate continuous barley cost cultivations cwt per acre cwt/acre defoliation disease dry matter effect ewes experiment EXPERIMENTAL HUSBANDRY FARMS fattening feeding fertilizer forage Friesian fungicide grain yield gross margin groups grown Halfbred harvest heifers herbicide Hereford High Mowthorpe higher highest yield increased infection intake June lambs levels of nitrogen live weight liveweight gain loams maize Maris Piper Mean mildew Ottringham paddock paraquat phosphate planting plots ploughing potash potatoes production reared reduced rolled barley ryegrass season seed rate seedbed sheep silage soil spraying spring barley spring oats sprouted steers stocking rate straw stubble total yield Trawscoed treatment trial tubers undersown units N/acre units of nitrogen varieties weeds weeks wheat crop winter wheat yards