Descubre y comparte nuestro conocimiento público

Beans are grown in Africa in a wide range of environments, mainly in the cool highlands of central and tropical eastern Africa, leading to a diversity of cropping systems and agronomic constraints to production. Beans are cultivated for large-scale production or home consumption either in monocul...

El frijol se cultiva en Africa en un amplio rango de ambientes, principalmente en las areas montanosas templadas de las regiones central y oriental tropical de Africa, lo cual supone diversos sistemas de cultivo y limitaciones agronomicas a la produccion. El frijol se cultiva para produccion en g...

The general objectives of CIAT's bean entomology program are mentioned. The 1st priority has been given to var. resistance as an ideal pest control method. At CIAT's headquarters (Palmira, Colombia), studies are conducted on Empoasca kraemeri, mites, and storage insects; var. resistance to Apion ...

Se mencionan los objetivos generales del programa de entomologia de frijol del CIAT. La mayor prioridad se ha dado a la resistencia var. como metodo ideal de control de plagas. En la sede principal del CIAT (Palmira, Colombia) se adelantan estudios con Empoasca kraemeri, acaros e insectos del fri...

The biology of pod-attacking insect pests of beans (Apion godmani, Epinotia aporema, Maruca testulalis, and Heliothis spp.) is briefly described. Cultural and chemical control measures are indicated. Some biological control measures are indicated for the case of Heliothis. (CIAT)

Se describen brevemente la biologia de los insectos plaga (Apion godmani, Epinotia aporema, Maruca testulalis, Heliothis spp.) que atacan las vainas del frijol. Se indican medidas de control cultural y quimico. En el caso de Heliothis, se indican algunas medidas de control biologico. (CIAT)

The presence of diseases, changes in severity, and the performance of cassava clones in 5 different ecosystems were studied. A wide-type resistance to existing biotic problems and its durability in these ecosystems were investigated. The relationship between plant reaction to CBB (Xanthomonas cam...

Se estudiaron la presencia de enfermedades, los cambios en la severidad de las mismas y el comportamiento de clones de yuca en 5 ecosistemas diferentes, y se investigo la resistencia de tipo amplio a problemas bioticos existentes, y su durabilidad en estos ecosistemas. Por otra parte, se investig...

The presence of diseases, changes in severity, and the performance of cassava clones in 5 different ecosystems were studied. A wide-type resistance to existing biotic problems and its durability in these ecosystems were investigated. The relationship between plant reaction to CBB (Xanthomonas cam...

Se estudiaron la presencia de enfermedades, los cambios en la severidad de las mismas y el comportamiento de clones de yuca en 5 ecosistemas diferentes, y se investigo la resistencia de tipo amplio a problemas bioticos existentes, y su durabilidad en estos ecosistemas. Por otra parte, se investig...

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...

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...

The natural factors affecting insect pest mortality are described as an important aspect in the regulation of populations. Through graphs of population density vs. time, the position of equilibrium of an insect population, the economic threshold, and the level of economic damage are indicated. Ge...

Se describen los factores naturales que afectan la mortalidad de los insectos plaga como aspecto importante en la regulacion de las poblaciones. Por medio de graficas de densidad de poblacion de insectos vs. tiempo, se indican la posicion de equilibrio en una poblacion de insectos, el umbral econ...

Pests may affect bean production, before and after harvest. Those that attack bean seedlings are the seed corn maggot which causes poor germination and deformed seedlings. The most common genera of cutworms include Agrotis, Feltia, and Spodoptera; white grubs and crickets also attack the seedling...

One of the most important bean-production constraints in tropical and subtropical Africa is the wide range of insect pests, which attack every part of the bean plant (from roots to pods and seeds) causing heavy losses either in the field or in storage. Losses can be up to 100 percent depending on...

Una de las mas importantes limitaciones a la produccion del frijol en Africa tropical y subtropical es el amplio rango de insectos plaga que atacan cada parte de la planta de frijol (raices, vainas, semillas) causando grandes perdidas en el campo o en almacenamiento. Las perdidas pueden ser de ha...