Pesticide supplies for the 1979 crop season appear adequate for all major uses. Production is expected to be up about 2 percent and inventories are up about 4 percent. Net supplies should be about 5 percent greater overall than last year. Because of increasing production and distribution costs, prices are expected to advance slightly over last year's levels, 2 to 3 percent. Pesticide demand estimates, up 5 to 6 percent over last year, are based primarily on farmers' planting intentions for 1979. Supply estimates are based on a survey of basic pesticide manufacturers and discussions with major distributors.