The deficiency symptoms can vary from species to species for a given element or nutrient. Phosphorous - reduced growth, although foliage remains green. Potassium - a variety of symptoms are caused including chlorosis, necrosis, and streaking, all showing up in older foliage. Calcium - deficiency first appears in the growing points of young leaves, causing distortion and death of young leaves. Growing tips fail to develop normally.
Common examples are tip-burn of cabbage and blossom end rot of tomato.
Magnesium - chlorosis firstly in the older leaves. Necrotic flecking or streaking are also characteristic symptoms. Boron - poor growth of shoots and roots, and internal tissue breakdown. Copper - deficiency symptoms can vary depending on plant species. On fruit trees a die back is seen.