Nearly 650, 000 tons of fertilizer were used by Kentucky farmers during the first half of 1969. Plant food content (N+P2O5 + K2O) was 38%, or nearly 247,000 tons. Slightly over half (58%) was sold in bagged, one-third (33%) in bulk, and 8% in fluid form. Mixtures made up 70% of the total tonnage, and materials made up 30%. The statistics tabulated below show a more detailed breakdown of the fertilizer tonnage used.
Wells, Kenneth L., "Summary of Fertilizer Use and Estimated Use of Plant Nutrients on Tobacco, Corn, Hay and Pastures in Kentucky" (1969). Agronomy Notes. 129.