Climatic conditions in California are so favourable that intensive outdoor horticultural production is economically feasible despite the inconvenience and expense of long-distance transport to high population centres in NE and N Central USA. Processing tomatoes typify the warm season, machine-harvested, outdoor crops, and crisp-headed lettuce the cool season, fresh market, hand-harvested crops. Cultural practices, including control of weeds, pests and diseases, are outlined.
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References
1.
Federal-State Market News Service (1973) Marketing lettuce from Salinas-Watsonville-King City and other Central California districts, 1972 marketing season, and marketing lettuce from Imperial Valley and Blythe districts, 1972–73 marketing season
