The 2nd edition of this manual enables practitioners and students of agriculture and forestry, as well as those involved in gardening, fruit, and wine cultivation, to identify damage symptoms on crops directly in the field caused by abiotic nutritional disorders. It also assists in determining the causes through targeted soil and plant analyses. As a result, the manual serves as a valuable information resource for users and agricultural consultants. Simple diagnostic keys aid in identifying nutrient deficiencies or excesses.