Economic Entomology: Pamphlets, Volume 1301918 - Beneficial insects |
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acre Agriculture animal aphids Aphis pomi Aphis sorbi appeared application attacks average blight Bordeaux mixture buds Bulletin bushels cause cent color cornicles crop curculio currant dandelions discrepancies disease early effect eggs Entomologist European corn borer Experiment Station exterior plants Farm feeding female Filehne flea-beetle foliage fruit fumigation fungus gallons grass growers growth hatch inches injury insect iron sulfate July June larvae lawn leaf leaves legs lice lime mature methemoglobin method missing hills nicotine nitrobenzene North Dakota number of seeds observed orchard oviparous Percentage period pest Plate plats plot poisoned Bordeaux mixture pounds produced punctures pupa Purkinje cells quince record redbugs rosy aphis season seeds per apple Segment sensoria soil solution species spots spraying stem mothers symptoms TABLE temperature thermograph Tobacco Flea Beetle Total treatment trees tubers unsprayed variety weeds weight of seeds winged forms yield York young