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发表于 2025-3-21 17:57:04
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符合你规定
发表于 2025-3-21 22:35:52
Book 1971 with little regard to various detrimental side-effects or long-term advantage with respect, even, to the specific crop itself. This book deals fundamentally with these questions. The development of pesticide resistance in many of the target species, against which the pesticides are directed, has oc
Mobile
发表于 2025-3-22 00:41:11
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lanugo
发表于 2025-3-22 04:50:25
Kindheit in der Wende — Wende der Kindheit?n to weeds as pests and the concomittant increases in expenditures for their control, have focused attention on the need for effective, low-cost, and long-lasting alternative control methods. Biological control provides one such alternative. Although the natural mortality factors in the environment
懒惰民族
发表于 2025-3-22 09:17:58
https://doi.org/10.1007/978-3-663-10479-7tralia and New Zealand and subsequently became widely dispersed in those countries. After World War II, distribution was discontinued in Britain as the newly-introduced insecticide DDT provided convenient and efficient control on most glasshouse crops. Later, Doutt (1951, 1952) demonstrated that the
Consensus
发表于 2025-3-22 15:41:02
The Biological Control of Weeds by Introduced Natural Enemiesn to weeds as pests and the concomittant increases in expenditures for their control, have focused attention on the need for effective, low-cost, and long-lasting alternative control methods. Biological control provides one such alternative. Although the natural mortality factors in the environment
Infect
发表于 2025-3-22 17:36:01
Control of Pests in Glasshouse Culture by the Introduction of Natural Enemiestralia and New Zealand and subsequently became widely dispersed in those countries. After World War II, distribution was discontinued in Britain as the newly-introduced insecticide DDT provided convenient and efficient control on most glasshouse crops. Later, Doutt (1951, 1952) demonstrated that the
自恋
发表于 2025-3-22 21:40:14
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史前
发表于 2025-3-23 01:50:35
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灵敏
发表于 2025-3-23 08:35:56
https://doi.org/10.1007/978-3-322-81004-5 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 rhodesgrass scale was begun in 1961.