Leaves are stunted and misshapened.
Symptoms move out the runners until the entire plant is affected.
Fruit set is eliminated and plants may be killed. Yellows is the result of a molybdenum deficiency in cucurbit plants. Molybdenum is generally available in high enough quantity for all plant growth. However, under acid soil conditions molybdenum is difficult for melons of some cultivars to absorb. Yellows occurs commonly in the Stanislaus County production areas and has been associated with cut and fill areas along the California aquaduct and the Delta-Mendota Canal.