Journal of the Royal Agricultural Society of England, Volumes 131-134

acreage acres Animal Production arable average barley beef bees breeders breeding British calf calves cattle cent Centre cereals clover colostrum commercial concentration cost cows crop dairy demonstration diet disease drainage economic effect efficiency ewes experiments farmers feeding fertiliser field Forestry Friesian fungicides grass grassland grazing growers growing growth harvesting herbicides herd honeybees husbandry Idem important improvement increased industry infection intake Journal of Agricultural labour lactation lambs land Lincolnshire live weight livestock machine methods milk National nitrogen nutrients nutrition organic matter organisations pigs plant plant breeding pollination potatoes poultry problems progeny protein red clover roots Royal Agricultural Society Royal Show ryegrass seed sheep silage Society of England soil structure sows sugar beet tubers units varieties Veterinary weeds wheat yield