Abstract

WARNOCK, Rosemary  and  GARCIA, José. System for the identification of phenology in determinate and indeterminate bean varieties ¹. Agronomía Trop. [online]. 2008, vol.58, n.2, pp.163-173. ISSN 0002-192X.

Communication between bean, Phaseolus vulgaris L., researchers and producers has been restricted by the absence of an adequate and effective system of identification of phenological events for the crop. A comparative evaluation, using various systems of identification, of the development of four cultivars (Montalban, Tacarigua, Tenerife and UCV-Manuare) was performed. Seeds were planted at two sites (Saman Mocho, Carabobo State and Maracay, Aragua State) using an experimental design of randomized blocks with three repetitions. In order to generate input data for the application of simulation models cultivars and available identification systems were evaluated. Results indicated that UCV-Manuare was the most sensitive to photoperiod, precocious, exhibited the first floral racemes and pods in the lowest nodes, had the shortest stages of development and growth of pods and seeds (R7+R8) and lowest yield. A system of identification of phenological phases of easy application in the field which complies to the requirements of the model CROPGRO of DSSAT is proposed for determinate and indeterminate bean cultivars. It integrates three main improvements for rating the occurrence of development stages: it is of practical use in the field, easy to apply to determinate and indeterminate cultivars and it identifies eight important reproductive events required as input data by simulation models.

Keywords : Phaseolus vulgaris L; bean; identification of phenology; simulation.