In the present paper the author describes the most relevant potassium deficiency symptoms on the following soil and container crops in Galicia: Vitis vinifera as a soil crop, Pelargoniumx hortorum as herbaceous container ornamentals and Brahea sp., Phoenix canariensis, Phoenix sylvestris, Neodypsis sp., Trachycarpus fortunei & Zamia furfuracea as container woody ornamentals. He also describes the
... [Show full abstract] causes of such deficiencies, as well as the importance and function of potassium in this type of crops and the technical ways to correct its deficiency.