botrytis gray mold
damping off
a fungal disease that causes the stems to rot off at the soil line
fungal leaf spot
powdery mildew
white or grayish fungal growth on the surface of stems or foliage
downy mildew
Irregularly shaped yellowish to brown spots appear on upper sides of leaves, usually in the center of plants
Spreads by wind & cool moist conditions
Devasting - will wipe out foliage, does not infect... worse in fall
Control: lots of cover sprays
Spread by wind. Moist/cool conditions favor disease development
A lot of cover sprays; hope for the best
tomato spotted wilt virus
transmitted by Thrips; Aluminum colored plastic mulch (Al foil under plants); Bronze discoloration of young leaves
rust
a reddish-brown discoloration of leaves and stems caused by a rust fungus
bacterial wilt
Spindly stems. Stunted yellowish plants. Cupping, curling, mottling of leaves. Winterkill. Orange discolouration of taproot vascular tissue.
Overwatering
Under watering
Over Fertilization
Iron Deficiency
Manganese Deficiency
Phosphorous Deficiency
Blossom Rot
Nitrogen Deficiency
Pesticide Toxicity
Low Temperature Injury
Excessive Light Intensity
Inadequate Light Intensity