Diagnosis involves careful observation of crop with a thorough knowledge of crop behaviour as well as a complete understanding of functions of nutrients and their deficiency symptoms. Diagnostic techniques vary from crop to crop depending upon the field condition in which the deficiency occurs. Indian Agriculture has entered into an era of multiple nutrient deficiencies. Realizing the gravity of emerging problem of nutrient deficiencies and to fulfill an immediate need to tackle them more efficiently, a guide on diagnosis of nutritional disorders and their corrections in crop plants has been...