Abstract
Methods were refined for encapsulating small units of artificial diets for rearing predators for use in biological control of harmful insects. A stirring, heating module, which held diet and encapsulating material at constant temperature, facilitated production of uniform capsules. Several encapsulating materials and applicators were tested. With this method, the media (high or low lipid content) were formed into capsules that had suitable size and wall thickness for feeding several species of immature and adult predaceous insects.

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