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The Analysis of Comfrey
Growing Comfrey on the Farm
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alfalfa alkaloid content allantoin amino acids Andrew Hughes average birds Bocking boiling tubes Britain Calcium CHCb comfrey field comfrey flour comfrey plants Comfrey Report Comfrey Root comfrey tea compost cows crude deeplitter system diet Doubleday Research Association Dried Comfrey eelworm eggs extract farm farmers feeding comfrey feet fertilizer fiber flower color flower stems fodder forage gain Approx grass green food Henry Doubleday Henry Doubleday Research horses inches Kenya ladino leaf legumes litter lysine meal method milk monocrotaline Newman Turner nitrogen officinale organic gardeners ounces Philip Christison plot potash potatoes Seed potatoes poultry poultry manure produce proportion protein Purple pyrrolizidine quantity Russian Comfrey samples season Seed potatoes Seed shavings silage Sludge soil species spring Stephenson symphytine Symphytum Symphytum officinale tons an acre Tons Cwt Total Trial Ground variations Vegans vegetable vitamin B12 Webster strain weeds wilted yeast