ملف:2015. MCH flakes. MCH is an anti-aggregation pheromone used to protect trees from attack by the Douglas-fir beetle. Wenatchee, Washington. (23630477478).jpg
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| ⧼wm-license-information-description⧽ |
MCH flakes. MCH is an anti-aggregation pheromone used to protect trees from attack by the Douglas-fir beetle. Photo by: Connie Mehmel Date: May 11, 2015 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Wenatchee Service Center. Source: Connie Mehmel collection. Wenatchee, Washington. For more information about MCH see: Ross, Darrell W., Kenneth Edward Gibson, and Gary E. Daterman. 2015. Using MCH to protect trees and stands from Douglas-fir beetle infestation. Forest Health Technology Enterprise Team, US Department of Agriculture, Forest Service. <a href="https://www.fs.fed.us/foresthealth/technology/pdfs/MCH_handbook_11_15_508.pdf" rel="nofollow">www.fs.fed.us/foresthealth/technology/pdfs/MCH_handbook_1...</a> Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: <a href="https://www.fs.usda.gov/main/r6/forest-grasslandhealth" rel="nofollow">www.fs.usda.gov/main/r6/forest-grasslandhealth</a> |
| ⧼wm-license-information-date⧽ | 2015, {{time}} – invalid date format 17 (help) |
| ⧼wm-license-information-source⧽ | 2015. MCH flakes. MCH is an anti-aggregation pheromone used to protect trees from attack by the Douglas-fir beetle. Wenatchee, Washington. |
| ⧼wm-license-information-author⧽ | R6, State & Private Forestry, Forest Health Protection |
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| زمن/تاريخ | صورة مصغرة | الأبعاد | مستخدم | تعليق | |
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| حالي | ★ مراجعة معتمدة 13:07، 17 نوفمبر 2023 | | 2٬448 × 2٬448 (842 كيلوبايت) | Pastakhov (نقاش | مساهمات) | Upload https://upload.wikimedia.org/wikipedia/commons/2/22/2015._MCH_flakes._MCH_is_an_anti-aggregation_pheromone_used_to_protect_trees_from_attack_by_the_Douglas-fir_beetle._Wenatchee%2C_Washington._%2823630477478%29.jpg |
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