Two snap bean variety trials were planted at the Gurabo Substation farm in east-central Puerto Rico. In the first trial five pole-bean varieties were tested. The varieties used were: Florigreen, Blue Lake 92, Blue Lake 228, Blue Lake 231, and Kentucky 191. Of these varieties Florigreen had the highest yield with a production of 4.30 tons of green beans per acre. It also showed high resistance to bean rust and mosaic, two of the worst diseases of beans. In the second trial eight lines and two commercial bush varieties were tested. They are B2971-1-1, B3370, B3095-3, B3489, B3365, B3125 x 5-2, B2567-1, B3076, Wade, and Top Crop. In this trial line B2971-1-1 produced the best yield with a production of 4.05 tons of green beans per acre, which is very high for bush beans in Puerto Rico.En la Subestación de Gurabo se llevaron a cabo dos experimentos comparativos con habichuelas tiernas. En uno de los experimentos se sembraron cinco variedades trepadoras, a saber: Florigreen, Blue Lake 92, Blue Lake 228, Blue Lake 231 y Kentucky 191. Entre éstas, la Florigreen fue superior tanto por su alto producción (4.30 T./A.), como por su alta resistencia al mosaico y a la roya de la habichuela. En otro experimento se probaron 10 líneas y variedades de habichuelas tiernas arbustivas. Estas fueron B2971-1-1, B3370, B3095-3, B3489, B3125 X 5-2, B2567-1, B3365, B3076, Wade y Top Crop. La línea B2971-1-1 fue superior, pues produjo 4.05 toneladas de habichuelas tiernas por cuerda, lo que se considera es una producción sobre lo normal para Puerto Rico.