Yellowing foliage

Leaves stippled with yellow foliage webbed. 

Cause . Spider mites. See Leaves stippled with yellow foliage webbed" on page 18. 

Leaves stippled with yellow foliage webbed. Cause Spider mites. These tiny, spiderlike pests generally feed on the undersides of plant leaves. They suck sap from plant leaves, initially causing a yellow flecking on the upper leaf surfaces. Severe infestations can cause leaves to turn yellow or white damaged leaves will eventually turn brown and drop. Tiny webs may be evident on leaves and stem tips. 

Tause Mites. For control measures, see leaves stippled with yellow foliage webbed r page 236. 

Leaves stippled with yellow foliage webbed. Cause Spider mites. For controls, see Leaves stippled with yellow foliage webbed on page 236. 

Grow plants in full sun to light shade with fertile, well-drained soil. Avoid sites with reflected light, which can cause leaf sunburn. If spider mites attack leaves, see Leaves stippled with yellow foliage webbed on page 18. Powdery mildew can also be a problem see Leaves with powdery white patches on page 19 for controls. 

Molybdenum deficiency in clover shows up as a general yellow or greenish yellow foliage color, stunting, and lack of vigor (Vitosh et al., 1981). 

Bacteria Plants stunted and pale green or yellow foliage easily pulled out of the ground and stem base is black and rotted. Infected and neighbouring tubers develop a wet rot in the field or in store, especially in damp and badly ventilated (warm) conditions. 

A physiological disorder called pole blight can result from extended periods of drought (Graham, 1990). Symptoms include yellow foliage, necrotic resinous areas on the trunk, and top or whole tree death. This disease appears to be caused by root deterioration in soils restricting water uptake (Leaphart, 1958 Leaphart and Stage, 1971)... 

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