In 1980 major studies on entomology were directed to accumulating information on the complex of insects that attack the cassava crop, emphasizing biological control studies of important pests, especially Erinnyis ello and Phenacoccus sp. Basic studies on the stemborer (Chilomina clarkei) were con...
En 1980, los principales trabajos de entomologia de yuca se dirigieron hacia la acumulacion de informacion sobre el complejo de insectos que ataca el cultivo, con enfasis en el estudio del control biologico de las plagas importantes, especialmente Erinnyis ello y Phenacoccus sp. Por primera vez s...
White mold, caused by the fungus Sclerotinia (Whetzelinia) sclerotiorum, is distributed worldwide and has more than 300 hosts. It infects flowers, cotyledons, seeds, leaves or injured plant tissue. The disease can be controlled by crop rotation, flooding, reduced seeding rates, application of che...
El moho blanco causado por el hongo Sclerotinia (Whetzelinia) sclerotiorum se halla presente en todo el mundo y mas de 300 plantas son hospedantes del patogeno; infecta las flores, cotiledones, semillas, hojas o tejido herido. El control de la enfermedad se puede hacer por: rotacion de cultivos, ...
Bellotti, Anthony C.
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Arias V., Bernardo
,
Vargas H., Octavio
,
Reyes Q., Jesús Antonio
,
Guerrero, José María
,
[Insects and mites that attack cassava, and their control]
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Insects and mites that attack cassava, and their control
Bean rust (Uromyces phaseoli), a common disease with worldwide distribution, is considered one of the most important bean production problems in the tropics. Prolonged periods of moisture and moderate temp. (17-27 degrees C) favor disease development. The infection process begins when a urediospo...
La roya del frijol (Uromyces phaseoli) es una enfermedad a nivel mundial considerada como uno de los problemas mas importantes de la produccion de frijol en el tropico. Periodos prolongados de humedad y temp. moderadas (17-27 grados C) favorecen el desarrollo de la enfermedad. El proceso de infec...
White mold, caused by the fungus Sclerotinia (Whetzelinia) sclerotiorum, is distributed worldwide and has more than 300 hosts. It infects flowers, cotyledons, seeds, leaves, or injured plant tissue. The disease can be controlled by crop rotation, flooding, reduced seeding rates, fewer irrigations...
El moho blanco causado por el hongo Sclerotinia (Whetzelinia) sclerotiorum se halla presente en todo el mundo, con mas de 300 plantas hospedantes del patogeno; infecta las flores, cotiledones, semillas, hojas o tejido lesionado. El control de la enfermedad se puede hacer por rotacion de cultivos,...
Population data concerning the cassava mealybug (CM) Phenacoccus manihoti Matile-Ferrero, the introduced parasitoid Epidinocarsis lopezi (De Santis), and indigenous antagonists were collected, together with ecological and plant growth variables, during a survey of 414 fields covering all ecologic...
Neuenschwander, P.
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Hammond, W.
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Ajuonu, O.
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Gado, A.
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Echendu, N.
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Bokonon-Ganta, A.H.
,
Allomasso, R.
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Okon, I.
,
[Biological control of the cassava mealybug, Phenacoccus manihoti (Hom., Pseudococcidae) by Epidinocarsis lopezi (Hym., Encyrtidae) in West Africa, as influenced by climate and soil]
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Biological control of the cassava mealybug, Phenacoccus manihoti (Hom., Pseudococcidae) by Epidinocarsis lopezi (Hym., Encyrtidae) in West Africa, as influenced by climate and soil
La cecidomyie africaine des galles du riz est un insecte ravageur du riz dont la population a recem¬ment connu une veritable explosion dans bon nombre de pays africain s. L'infestation peut provoquer la perte totale de la recolte. Les traitements insecticides pre-sentent de nombreux inconvenients...
Okocha, P.
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Ukwungwu, M.N.
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Joshi, R.
,
[Criblage au champ pour la resistance a la cecidomyie africaine du riz: guide de recherche de lIita, No. 34]
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Criblage au champ pour la resistance a la cecidomyie africaine du riz: guide de recherche de lIita, No. 34
Among several natural enemies introduced to combat the cassava mealybug, Phenacoccus manihoti (Homoptera: Pseudococcidae), the neotropical parasitoid Apoanagyrus (Epidinocarsis) lopezi (Hymenoptera: Encyrtidae) was the most successful. It established in 26 African countries, causing a satisfactor...
The relationships between 30 strains of Metarhizium were investigated by isoenzyme analysis, PCRRAPDs, and protease production. The strains included representatives of M. anisopliae, M. Flavoviride var. ¯avoviride and M. Flavoviride var. minus. Thirteen isolates conforming to M. Flavoviride from ...
Bridge, P.D.
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Prior, C.
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Sagbohan, J.
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Lomer, C.J.
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Carey, M.
,
Buddie, A.
,
[Molecular characterisation of isolates of Metarhizium from locusts and grasshopers]
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Molecular characterisation of isolates of Metarhizium from locusts and grasshopers