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Many factors can severely affect beans during their growth cycle. Parasitic plants, such as Cuscuta epithymum and Cassytha filiformis, can reduce yields. Various environmental conditions including frost, extreme conditions of high or low MC, sudden changes in soil and air temp., and periods of in...

Muchos factores pueden afectar severamente el frijol durante su ciclo de crecimiento. Las plantas parasitas, tales como Cuscuta epithymum y Cassytha filiformis, pueden reducir los rendimientos. Diversas condiciones ambientales incluyendo las heladas, las condiciones extremas de exceso o falta de ...

The biology, damage caused, and control (cultural, chemical, and var. resistance) of the following insect pests attacking bean plant foliage are described: chrysomelids, Empoasca kraemeri, Epilachna varivestis, Trichoplusia ni, Bemisia tabaci, aphids, Tetranychus spp. Polyphagotarsonemus latus, A...

Se describen la biologia, el dano que ocasionan y el control (cultural, quimico y resistencia var.) de los insectos plaga que atacan el follaje de las plantas de frijol: crisomelidos, Empoasca kraemeri, Epilachna varivestis, Trichoplusia ni, Bemisia tabaci, Afidos, Tetranychus spp., Polyphagotars...

Strategies for managing the problem of soil acidity without making massive lime applications are proposed. The 1st strategy consists of the addition of lime to reduce Al saturation, taking into account 3 basic considerations: dose determination, utilization of good quality materials for liming, a...

Se proponen estrategias para manejar el problema de la acidez de los suelos sin hacer aplicaciones masivas de cal. La primera estrategia consiste en la adicion de cal para reducir la saturacion de Al, teniendo en cuenta 3 consideraciones basicas: determinacion de la dosis, utilizacion de material...

El mandato institucional de la dirección ejecutiva de CORPOICA de crear las redes por producto y las recomendaciones de la misión evaluadora de PROFRIZA de formar una Red Nacional de Leguminosas en cada uno de los países miembros de este proyecto crearon el escenario para que CORPOICA y CIAT unie...

Emphasis has been placed on the screening of hybrid selections for resistance to rust, anthracnose, BCMV and Empoasca sp., yield and sensitivity to photoperiod. A total of 1464 materials (937 selections from the breeding program) were screened in the Bean Team Nursery and 700 (200 breeding select...

Se ha dado prioridad a la seleccion de hibridos por resistencia a roya, antracnosis, BCMV y Empoasca sp., rendimiento y sensibilidad al fotoperiodo. Del vivero del Programa de Frijol se seleccionaron 1464 materiales (937 selecciones del programa de mejoramiento genetico) y 700 materiales del Ensa...

Web blight, caused by the fungus Thanatephorus cucumeris, is prevalent in tropical regions with high to moderate temp and RH; more than 200 plant species serve as hosts to this pathogen. Hyphae can grow rapidly over healthy tissue of leaves, flowers, petioles and pods. For efficient control, the ...

La mancha hilachosa, causada por el hongo Thanatephorus cucumeris, prevalece en las regiones tropicales con una temp y humedad relativa entre moderada y alta; mas de 200 especies vegetales le sirven de hospedante al patogeno. Las hifas del hongo pueden crecer rapidamente sobre el tejido sano de l...

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, ...

A detailed discussion is presented on the general concepts concerning the planning of expt., with emphasis on the exptl. approach, the basic elements of the expt., and information analysis. (CIAT)

Se discuten en detalle los conceptos generales sobre la planeacion de expt., con enfasis en el enfoque exptl., los elementos basicos del expt. y el analisis de la informacion. (CIAT)

The traditional empirical approach to selection for yield in common bean has met with modest success. Breeding based on the concepts of ideotype, or for specific combinations of physiological traits, and/or for combining ability based on specific genotypic combinations, have not been universally ...

Research and development of a reliable dry land production system for common bean (Phaseolus vulgarisL.) based on low-cost direct seeding and direct harvest methods was initiated at the Crop Development Centre at the University of Saskatchewan in the late 1980s. The target production area is a dr...