Abstract

Abstract Bluegill sunfish, Lepomis macrochirus (Rafinesque) were stocked at a rate of 20,000/ha into 40 plastic pools, each 3 m in diameter, containing water to a depth of 76 cm. Added attachment surfaces (yellow pine boards) for fish-food organisms were placed in 36 plastic pools in amounts corresponding to 20, 40, 60, 80, and 100% of the water surface area. Fertilizers with 8–8-2 (N-P-K), 0–8-0 (N-P-K), and a control with no fertilizer were used throughout the study. The addition of pine boards resulted in linear increases in both fish food and fish production. Significant increases occurred when additions of attachment surface equal to the surface area of the pool were added. Complete (8–8-2, N-P-K) fertilization produced the greatest weight of macroinvertebrates and bluegills.

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