W. D. Hollerman

A finely-pulverized agricultural limestone was much more effective than a coarse agricultural limestone in elevating the total alkalinity of ponds and of laboratory mud-water systems. The relative abilities of different particle-size classes of agricultural limestone to raise total alkalinity were determined. A method for correcting pond lime requirements for the neutralizing value and fineness of agricultural limestone was proposed.

When applied to ponds at equivalent rates, liquid fertilizer was much more effective than granular triple superphosphate in increasing futrable orthophate concentrations. Four methods of applying liquid fertilizers were tested: (1) liquid fertilizer was introduced into the intake side of a pump, mixed with water, and discharged into ponds, (2) a power sprayer was employed to spray the fertilizer over portions of pond surfaces, (3) a compression-type hand sprayer was used to spray fertilizer along shallow water edges of ponds, and (4) fertilizer was drained into the propeller wash of an...