Morsel
发表于 2025-3-28 17:32:55
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implore
发表于 2025-3-28 21:10:03
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Enzyme
发表于 2025-3-28 22:59:37
Scleroderris Canker, , (,.) Morelet, in Canada -- an Overview,gerb.) Morelet, have been determined serologically. The North American race is widely distributed. The European race, first detected in Canada in 1978 generally produces symptoms and damage indistinguishable from those of the North American race. To date, steps have been taken to destroy or closely
MURKY
发表于 2025-3-29 06:48:21
Scleroderris Canker in the Province of Ontario, Canada,ted as caused by . (Lagerb.) Morelet. The pathogen was isolated in 1962. By 1965, when it was established as the cause of the red pine malady, the North American race of G. . was well established in three zones. The distribution pattern implicated two industrial and two provincial tree nurseries. Pr
大猩猩
发表于 2025-3-29 07:15:43
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Anticoagulant
发表于 2025-3-29 11:50:46
Scleroderris Canker in the Maritime Provinces of Canada,ound in Prince Edward Island. About one-third of the pine plantations are infected in New Brunswick, the inoculum originating from surrounding areas. Non-North American races have been identified serologically at nine locations since 1978 but European race-like symptoms have not been observed.
Nibble
发表于 2025-3-29 16:50:16
Scleroderris Canker in Newfoundland,in 1980 and 1981 at nine other locations in or near the city. Disease development and intensity of infection in a plantation were spectacular. The Province established a quarantine area in 1980 and jointly with Plant Quarantine Division of Agriculture Canada directed control by pruning and eradicati
颂扬本人
发表于 2025-3-29 19:48:02
Historical and Current Scleroderris Situations in the United States,was identified in 1964, the disease was already widespread there and in northern Wisconsin, and in 1969 it was discovered in Minnesota. Most infection was traced to a nursery in Michigan, and spread declined once nursery infection was arrested..In 1959, the disease, later attributed to the European
他去就结束
发表于 2025-3-30 00:19:54
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吞噬
发表于 2025-3-30 07:19:10
Differences in Disease Syndrome with Pathogen Race and with Host and Environment,osen and used as the basis upon which the effects of diverse forms of the pathogen are manifested. Of the environmental elements germane to the problem, climate is the most difficult to predict even over long intervals. Short-term extreme variation may predispose plants to extraordinary degrees of i