%0 Journal Article
%T Study Interactions of Competition between Climbing Common Bean (Phaseolus vulgaris L.) and Corn (Zea mays L.) Plants Sowed Associate Relaciones de Competencia entre el Fr¨ªjol Trepador (Phaseolus vulgaris L.) y el Ma¨ªz (Zea mays L.) Sembrados en Asocio
%A Le¨®n Dar¨ªo V¨¦lez Vargas
%A Andrea Moya Mu£¿oz
%A Le¨®n Jairo Clavijo Porras
%J Revista Facultad Nacional de Agronom¨ªa, Medell¨ªn
%D 2011
%I Universidad Nacional de Colombia, Sede Medell¨ªn
%X Associated corn and bean is one of several systems to produce climbing bean. The main characteristic of the associated is the greater yield by area than monoculture of two species, although the competence between them reduces the yield bean in 40% and 20% in corn. Research about physiological processes affected by competence between these species is still scarce. The objective of this research was to evaluate the effects of competence on the physiological behavior of bean. In a randomized block design with 4 replications were established the following treatments: bean without competition, competition between bean and ma¨ªze by light, competition between bean and ma¨ªze by soil resources and simultaneous competition between bean and ma¨ªze by both resources light and soil. The variables measured were accumulated dry matter and its accumulation rate, leaf area, stem longitude, and the yield components of bean. The variance analysis, comparison of means and simple correlations were used. The types of competition significantly reduced the accumulated dry matter, the rates of accumulation, the yield and the yield components. The types of competence did not show significant differences on seed weigh and accumulated total dry matter of plants. Although during the plants ontogeny there were significant differences between them, feedback processes were established within each type of competition. Therefore, the effects of competence in the final stage were not distinguished. It suggests that bean plant is an integrated unit through the physiological processes. Una forma de cultivar fr¨ªjol trepador es en asocio con ma¨ªz. Su principal caracter¨ªstica es el mayor rendimiento por unidad de ¨¢rea con respecto a los unicultivos de cada especie, aunque la competencia que se presenta entre ellas reduce los rendimientos del fr¨ªjol en m¨¢s del 40% y los de ma¨ªz en 20%. La investigaci¨®n sobre los procesos fisiol¨®gicos afectados por la competencia y su din¨¢mica ha sido escasa. El prop¨®sito de esta investigaci¨®n fue evaluar los efectos de la competencia sobre el comportamiento fisiol¨®gico del fr¨ªjol. En un dise o de bloques completos al azar con cuatro repeticiones se evaluaron los siguientes tratamientos: fr¨ªjol sin competencia, fr¨ªjol y ma¨ªz competiendo por luz, por recursos del suelo y simult¨¢neamente por luz y recursos del suelo. Las variables medidas fueron materia seca acumulada y su tasa de acumulaci¨®n, ¨¢rea foliar, longitud del tallo y componentes del rendimiento del fr¨ªjol. Los datos se trataron con un an¨¢lisis de varianza, comparaci¨®n de medias y correlaciones simples. L
%K Cultivos asociados
%K fisiolog¨ªa de cultivos
%K ecofisiolog¨ªa
%K componentes de rendimiento
%K Intercropping
%K physiology of crops
%K ecophysiology
%K yield components
%U http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0304-28472011000200004