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KP-1207-R2 - Klamath Project - Region II. A small tank equipped with power spraying equipment is pulled by a tractor through a field of onions. This spray is composed of sinox weed killer mixed with a 50% wetable DDT solution. This mixture kills both noxious weeds and insects from one application of spray. Noxious weeds are rapidly becoming a nuisance in the Klamath Project and measures are being taken to curtail their growth; June 26, 1946; Photo by J. E. Fluharty

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