| [preliminary trial of the cultivation of winged beans (psophocarpus tetragonolobus) in guatemala and variations in their chemical composition]. | there is no reliable information concerning the cultivation practices of winged bean cultivars in the area; therefore, it was considered of interest to participate in the first international winged bean trial, which was peformed according to a standardized procedure. the planting site was located at 90 degrees longitude and 15 degrees latitude, and 250 meters above sea level, in a hot-humid environment. sowing was performed in the middle of november, under continuous irrigation until april. duri ... | 1982 | 7181624 |