On the "Metsubure" [blind bud] symptoms of taro corms, 3: Effects of the calcium-potassium ratio in the culture solution and omission of certain elements on "Metsubure" corm formation

agronomic characters alkali metals alkaline earth metals anatomy araceae boron calcium colocasia colocasia esculenta composition corms cropping systems crops cultivation deficiency diseases disorders economic plants elements functional disorders hydroponics injurious factors metabolic disorders metals methods mineral deficiencies monocotyledons nutritional disorders plant anatomy plants potassium root crops root vegetables semimetals soil fertility spathiflorae starch crops stems storage organs vegetable crops