Environmental stress
Sulfur deficiency
Sulfur deficiency is a nutrient disorder that reduces chlorophyll and protein formation, producing pale green to yellow new growth, weak stems and slow development.…
DetailsPLANT DOCTOR
Plant problem library
Detailed profiles of common plant diseases, pests, nutrient deficiencies and environmental problems.
Environmental stress
Magnesium deficiency
Magnesium deficiency is a nutritional disorder rather than an infectious disease. Because magnesium moves within plants, symptoms commonly begin on older, lower leaves as…
Details
Environmental stress
Calcium deficiency
Calcium deficiency is a physiological disorder caused by inadequate calcium supply to actively growing tissues or by interrupted calcium transport within the plant. Symptoms…
Details
Environmental stress
Potassium deficiency
Potassium deficiency is a nutritional disorder caused by inadequate plant-available potassium or restricted uptake. It commonly begins on older leaves as pale or yellow…
Details
Environmental stress
Phosphorus deficiency
Phosphorus deficiency is a nutritional and soil-availability disorder that slows root and shoot growth, delays maturity, and may produce dark-green foliage with reddish-purple coloration,…
Details
Environmental stress
Nitrogen deficiency
Nitrogen deficiency is a nutritional disorder that reduces chlorophyll production, growth and yield. The earliest visible sign is usually uniform pale-green to yellow foliage,…
Details