Productividad de cultivares de frijol (Phaseolus vulgaris L.). Parte II.Variabilidad del rendimiento en función del crecimiento.

The research was developed in areas of the Base Scientific Technological Unit, Los Palacios, Pinar del Río, belonging to the National Institute of Agricultural Sciences. The objective was to evaluate the variability of the yield in bean cultivars (Phaseolus vulgaris L.), associated with growth variables in the final stage of crop development. Six bean cultivars were used (Holguin 518, Tazumal, Tomeguin 93, Bat 304, Bat 832 and Cuba Cueto 25-9), which were planted on four different sowing dates (October 2010, December 2011, January 2012 and October 2012 ), on a Hydromorphic Gley Nodular Ferruginous Petroferric soil. A randomized block experimental design with three replications was used. At the time of harvest, dry mass of pods, grains, stems and total dry mass of the aerial part were determined by adding the dry mass of organs. Harvest Index and pod harvest index were determined. It was shown that there is a positive relationship between the mass of the grains and the agricultural yield regardless of the cultivar and the sowing date, so that this variable constitutes a fundamental component in the formation of yield in the bean crop. Increases in the dry mass of the stems and pods affect the harvest index, so it is not possible that the greater amount of the total biomass production becomes part of the agricultural productivity. [ABSTRACT FROM AUTHOR]