ABHOR
发表于 2025-3-28 14:59:59
Control of Pests in Glasshouse Culture by the Introduction of Natural Enemiesor their natural enemies. Thus, any interaction between a pest and its primary natural enemy can, in the absence of hyperparasites or secondary predators, proceed at a predictable rate. It is therefore surprising that, in the 30,000 acres of glasshouses in the world, biological control has been expl
声明
发表于 2025-3-28 20:12:23
The Biological Control of the Winter Moth in Eastern Canada by Introduced Parasites, into the eastern seaboard of North America. A serious defoliator of hardwoods, and having a natural range that includes most of Europe and parts of Asia, the insect is capable of spreading across North America. But it has been effectively controlled at its point of entry by the deliberate introduc
Humble
发表于 2025-3-29 02:55:03
Biological Control of Rhodesgrass Scale by Airplane Releases of an Introduced Parasite of Limited Di insect has been found infesting 94 species of grasses in North America (Chada and Wood, 1960; Schuster, 1967), some of which it affects severely. Introduction of the scale parasite, . (Rao), from India was made in 1959 (Dean ., 1961). Evaluation of this parasite in Texas as a control agent for rhod
Immunization
发表于 2025-3-29 05:01:12
The Importance of Naturally-Occurring Biological Control in the Western United Statesed cotton fields, we find tongues in trees, books in running brooks, sermons in stones and good in everything, for the defoliated forests and rotten bolls tell a story of disrupted nature. To paraphrase Shakespeare here would be appropriate, for it was in “As You Like It” that Shakespeare reflected
mosque
发表于 2025-3-29 09:51:01
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无法取消
发表于 2025-3-29 13:16:33
Cases of Naturally-Occurring Biological Control in Canadant cases from forest and orchard entomology. Changes in densities of apple pest populations, initiated through destruction of natural enemies by spray chemicals, have been under investigation in Nova Scotia since 1943, and of peach pests in Ontario since 1946; intensive ecological studies on forest
fulcrum
发表于 2025-3-29 17:43:34
Systems Analysis and Pest Management predators and parasites. The following chapters continue the same theme but with greater emphasis on integrated control and the role biological control plays in the application of integrated control in pest management.
meritorious
发表于 2025-3-29 21:16:50
Microbial Control as a Tool in Integrated Control Programsulations, many of the principles governing the role of insect parasites and predators to control insects also apply to entomogenous microorganisms. In nature, viruses, bacteria, protozoa, fungi, rickettsiae and nematodes, perform important roles in the dynamics and natural regulation of insect and m
责任
发表于 2025-3-30 01:42:36
Biological Control of Coccids by Introduced Natural Enemieslifornia. Subsequently, the same predator achieved complete biological control of the cottony cushion scale in 25 additional countries, and a substantial degree of control in four other countries (see DeBach, ed., 1964, Chapter 24).
烤架
发表于 2025-3-30 07:10:57
The Importance of Naturally-Occurring Biological Control in the Western United Stateson nature and saw beauty and reason in what appeared ugly. Indeed, defoliated trees and rods of rotten bolls are unpleasant sights, but such products of insect outbreaks tell a story of disturbance, be it natural or man made. We also are made much aware of the potential destructiveness of unleashed phytophagous insect populations.