An application of ethyl parathion to flowering soybeans reduced populations of predatory arthropods by 66 percent 6 days posttreatment. Egg and larval parasites of the green cloverworm, Plathypena scabra (F.), the most abundant caterpillar species, also were reduced. The green cloverworm...

The epizootiology of Entomophthora canarjensis Macleod, Tyrrell, & Soper in populations of the woolly pine needle aphid (Schizolachnus piniradiatae (Davidson)) was investigated during a 5-year period in an isolated plantation of red pine (Pinus resinosa Aitj in northern Ontario. Climatic factors...

This publication presents field observations on the changes in the plant and animal communities during the first 5 years of operation of the Leaky Acres Recharge Facility, Fresno, Calif. The nature and magnitude of ecological changes were recorded as the aquatic environment was generated and...