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A description is given of the different factors limiting to bean production in Latin America, type of damage caused, environmental conditions where they prevail, and possible control measures. With regard to diseases, the following are discussed: aphid-, whitefly- and beetle-transmitted viruses, ...
Se presenta una descripcion de los diferentes factores que limitan la produccion de frijol en Latinoamerica, el tipo de dano causado, condiciones ambientales donde estos prevalecen, y posibles medidas de control. Se examinan las siguientes enfermedades: virus transmitidos por afidos, mosca blanca...
A report is presented on N fertilization and fixation in bean crops. The selection of N sources, the time of application and the amount applied guarantees a higher utilization of N by the plant. When the total amount of N required is applied prior to planting, the plant only uses 26 percent of th...
While symbiotic nitrogen (N2) fixation by G. max and P. vulgaris reduces their need for combined N, N2 fixation under field conditions is rarely maximized. This paper reviews constraints to N2 fixation in these species, then examines the genetic variability recorded for traits affecting N2 fixati...
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