EXTENSION DIAGNOSTIC MANUAL: CROP NUTRIENT DEFICIENCIES

- Nitrogen: Optimal level is 50 PPM. Function: Promotes vegetative growth and leaf development. Deficiency Symptom: Yellowing of bottom leaves starting at tips

- Phosphorus: Optimal level is 25 PPM. Function: Supports root establishment and flowering. Deficiency Symptom: Purplish tint on leaf margins and stems

- Potassium: Optimal level is 150 PPM. Function: Regulates water transport and disease resistance. Deficiency Symptom: Necrosis and scorching on leaf tips
