. Commercial mass culture of the California red scale parasite : Aphytis lignanensis. Citrus; Scale insects. surface should be the goal; but as indi- cated earlier, such a high density is diffi- cult to obtain. Diligent effort to reach this goal, however, should result in actual infestations on all squash between the desired density limits of 35 and 70. The recommended inoculum densities and the expected female progeny yield per square centimeter for scale densities of 35 to 65 per square centimeter are shown in table 7. These recommendations are based on the data shown in graph 5 and discusse
. Commercial mass culture of the California red scale parasite : Aphytis lignanensis. Citrus; Scale insects. surface should be the goal; but as indi- cated earlier, such a high density is diffi- cult to obtain. Diligent effort to reach this goal, however, should result in actual infestations on all squash between the desired density limits of 35 and 70. The recommended inoculum densities and the expected female progeny yield per square centimeter for scale densities of 35 to 65 per square centimeter are shown in table 7. These recommendations are based on the data shown in graph 5 and discussed on pages 22 to 25. Most of these combinations give a surplus of female progeny over female parents of from 6 to 15 per cent, for an average of about 10 per cent. This will allow for handling losses of up to an. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original DeBach, Paul; White, Ernest B. Berkeley, Calif. : Division of Agricultural Sciences, University of California, California Agricultural Experiment Station
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