The biological control of a mealy bug on coffee and other crops in Kenya
1. Pseudococcus kenyae is a mealy bug comparatively recently introduced to Kenya, where it rapidly became a major pest of coffee and of some native food crops. 2. Attempts to introduce controlling parasites and predators from various hosts proved unsucessful. 3. Following the determination that the insect was an undescribed species, known only from East Africa, a search for parasites was made in Uganda and Tanganyika, which resulted in the discovery of at least 9 species of primaries, of which 5 were bred in large numbers in Nairobi and liberated in European and native areas. 4. Three of these are now considered to be permanently established and one of them in particular has been of immediate value. The population of mealy bug both on coffee and native crops has decreased with remarkable speed and to a remarkable extent following its establishment. This has appreciably reduced the cost of producing coffee in the mealybug area, and has materially assisted many thousands of small produc ers in the native reserves. 5. This extremely favourable result may not be so completely maintained in future, and though the mealy bug can never be so severe a pest as before the introductions it may still prove to be a pest of some severity. The question of introducing further species will then come up for decision
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1943
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Subjects: | PSEUDOCOCCUS, COCCIDIOS, CONTROL BIOLOGICO, KENIA, ORGANISMOS PARA CONTROL BIOLOGICO, PSEUDOCOCCUS KENYAE, |
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KOHA-OAI-BVE:798962020-02-03T21:47:20ZThe biological control of a mealy bug on coffee and other crops in Kenya 85489 Le Pelley, R.H. 19431. Pseudococcus kenyae is a mealy bug comparatively recently introduced to Kenya, where it rapidly became a major pest of coffee and of some native food crops. 2. Attempts to introduce controlling parasites and predators from various hosts proved unsucessful. 3. Following the determination that the insect was an undescribed species, known only from East Africa, a search for parasites was made in Uganda and Tanganyika, which resulted in the discovery of at least 9 species of primaries, of which 5 were bred in large numbers in Nairobi and liberated in European and native areas. 4. Three of these are now considered to be permanently established and one of them in particular has been of immediate value. The population of mealy bug both on coffee and native crops has decreased with remarkable speed and to a remarkable extent following its establishment. This has appreciably reduced the cost of producing coffee in the mealybug area, and has materially assisted many thousands of small produc ers in the native reserves. 5. This extremely favourable result may not be so completely maintained in future, and though the mealy bug can never be so severe a pest as before the introductions it may still prove to be a pest of some severity. The question of introducing further species will then come up for decision1. Pseudococcus kenyae is a mealy bug comparatively recently introduced to Kenya, where it rapidly became a major pest of coffee and of some native food crops. 2. Attempts to introduce controlling parasites and predators from various hosts proved unsucessful. 3. Following the determination that the insect was an undescribed species, known only from East Africa, a search for parasites was made in Uganda and Tanganyika, which resulted in the discovery of at least 9 species of primaries, of which 5 were bred in large numbers in Nairobi and liberated in European and native areas. 4. Three of these are now considered to be permanently established and one of them in particular has been of immediate value. The population of mealy bug both on coffee and native crops has decreased with remarkable speed and to a remarkable extent following its establishment. This has appreciably reduced the cost of producing coffee in the mealybug area, and has materially assisted many thousands of small produc ers in the native reserves. 5. This extremely favourable result may not be so completely maintained in future, and though the mealy bug can never be so severe a pest as before the introductions it may still prove to be a pest of some severity. The question of introducing further species will then come up for decisionPSEUDOCOCCUSCOCCIDIOSCONTROL BIOLOGICOKENIAORGANISMOS PARA CONTROL BIOLOGICOPSEUDOCOCCUS KENYAEEmpire Journal of Experimental Agriculture (RU) |
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PSEUDOCOCCUS COCCIDIOS CONTROL BIOLOGICO KENIA ORGANISMOS PARA CONTROL BIOLOGICO PSEUDOCOCCUS KENYAE PSEUDOCOCCUS COCCIDIOS CONTROL BIOLOGICO KENIA ORGANISMOS PARA CONTROL BIOLOGICO PSEUDOCOCCUS KENYAE |
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PSEUDOCOCCUS COCCIDIOS CONTROL BIOLOGICO KENIA ORGANISMOS PARA CONTROL BIOLOGICO PSEUDOCOCCUS KENYAE PSEUDOCOCCUS COCCIDIOS CONTROL BIOLOGICO KENIA ORGANISMOS PARA CONTROL BIOLOGICO PSEUDOCOCCUS KENYAE 85489 Le Pelley, R.H. The biological control of a mealy bug on coffee and other crops in Kenya |
description |
1. Pseudococcus kenyae is a mealy bug comparatively recently introduced to Kenya, where it rapidly became a major pest of coffee and of some native food crops. 2. Attempts to introduce controlling parasites and predators from various hosts proved unsucessful. 3. Following the determination that the insect was an undescribed species, known only from East Africa, a search for parasites was made in Uganda and Tanganyika, which resulted in the discovery of at least 9 species of primaries, of which 5 were bred in large numbers in Nairobi and liberated in European and native areas. 4. Three of these are now considered to be permanently established and one of them in particular has been of immediate value. The population of mealy bug both on coffee and native crops has decreased with remarkable speed and to a remarkable extent following its establishment. This has appreciably reduced the cost of producing coffee in the mealybug area, and has materially assisted many thousands of small produc ers in the native reserves. 5. This extremely favourable result may not be so completely maintained in future, and though the mealy bug can never be so severe a pest as before the introductions it may still prove to be a pest of some severity. The question of introducing further species will then come up for decision |
format |
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topic_facet |
PSEUDOCOCCUS COCCIDIOS CONTROL BIOLOGICO KENIA ORGANISMOS PARA CONTROL BIOLOGICO PSEUDOCOCCUS KENYAE |
author |
85489 Le Pelley, R.H. |
author_facet |
85489 Le Pelley, R.H. |
author_sort |
85489 Le Pelley, R.H. |
title |
The biological control of a mealy bug on coffee and other crops in Kenya |
title_short |
The biological control of a mealy bug on coffee and other crops in Kenya |
title_full |
The biological control of a mealy bug on coffee and other crops in Kenya |
title_fullStr |
The biological control of a mealy bug on coffee and other crops in Kenya |
title_full_unstemmed |
The biological control of a mealy bug on coffee and other crops in Kenya |
title_sort |
biological control of a mealy bug on coffee and other crops in kenya |
publishDate |
1943 |
work_keys_str_mv |
AT 85489lepelleyrh thebiologicalcontrolofamealybugoncoffeeandothercropsinkenya AT 85489lepelleyrh biologicalcontrolofamealybugoncoffeeandothercropsinkenya |
_version_ |
1756058662143524865 |