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Ormerod, Eleanor Anne
(Encyclopedia)Ormerod, Eleanor Anne ôrˈmərŏd [key], 1828–1901, English economic entomologist. She aided the Royal Horticultural Society in forming a collection of insect farm pests and was awarded the Flora m...mealybug
(Encyclopedia)mealybug, common name for certain unarmored scale insects that exude a granular white secretion, giving them a mealy appearance. Many are common greenhouse and crop pests. Adult females are wingless, ...scale insect
(Encyclopedia)scale insect, common name for members of a highly modified group of insects belonging to several families of the superfamily Coccoidea. Scales possess antennae and are characterized by reduced legs. O...insecticides
(Encyclopedia)insecticides, chemical, biological, or other agents used to destroy insect pests; the term commonly refers to chemical agents only. The liabilities of chemical insecticides have encouraged interest ...armyworm
(Encyclopedia)armyworm, larva, or caterpillar, of a moth, Pseudaletia unipuncta or Mythimna unipuncta, found in North America E of the Rocky Mts.; also known as the common, or true, armyworm. When numerous, armywor...fallow land
(Encyclopedia)fallow land, cropland that is not seeded for a season; it may or may not be plowed. The land may be cultivated or chemically treated for control of weeds and other pests or may be left unaltered. Allo...Howard, Leland Ossian
(Encyclopedia)Howard, Leland Ossian, 1857–1950, American entomologist, b. Rockford, Ill., grad. Cornell (B.S., 1877), Ph.D. Georgetown Univ., 1896. Associated with the U.S. Bureau of Entomology from 1878 (as its ...slug
(Encyclopedia)slug, name for a terrestrial gastropod mollusk in which the characteristic molluscan shell is reduced to a thin plate embedded in the tissues. Like the terrestrial snails of the same order, slugs have...pesticide
(Encyclopedia)pesticide, biological, physical, or chemical agent used to kill plants or animals that are harmful to people; in practice, the term pesticide is often applied only to chemical agents. Various pesticid...Müller, Paul Hermann
(Encyclopedia)Müller, Paul Hermann mŭlˈər [key], 1899–1965, Swiss chemist, Ph.D. Univ. of Basel, 1925. He worked as a research scientist with J. R. Geigy A.G. in Basel, Switzerland. Muller won the 1948 Nobel...Browse by Subject
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