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The agricultural sector in Cuba plays an important role for the economy, with a contribution to GDP of around 20%. However, approximately 67% of agricultural land has some agroproductive limiting factors. This situation is aggravated by the implementation of inadequate farming systems and by the lack of knowledge of the measures to be adopted based on the limiting agro-productive factors of the agroecosystems. In the research, the study of the properties of Red Ferralitic soils (Order Oxisol) is carried out in the agroecosystems intensively dedicated to the cultivation of potatoes (Solanum tuberosum L.), in the CPA “Amistad Cubano-Búlgara”, one of the most important production entity in the Mayabeque province. As a result of the research, evident negative impacts are observed on the quality of the soil due to its intensive use and monoculture. This has caused soil degradation, highlighting the low content of organic matter, potassium and phosphorus, along with the reduced cation exchange capacity. Likewise, compaction and poor drainage problems were identified, which negatively affects the development of the crop. Sustainable management measures and the implementation of agroecological practices are proposed to improve the sustainability of food production in the region and counteract the negative effects of intensive agriculture.

To define prognostic factors of testicular cancer and to develop a strategic therapy based on clinical, pathological and biological findings, 77 cases of non seminomatous testis tumor, observed in G.F. Leclerc Center from 1967 to 1977, have been analysed. For all these patients early chemotherapy program was associated with surgery; radiation therapy was reserved for stages with retroperitoneal metastatic disease. Results of this review confirmed the interest of such medical treatment which improved survival in all stages of disease. Some prognostic factors could be detailed from these cases: nature of tumoral components, invading of lymph node, presence or not of biological markers; identification of these would unable us to choose the best adjuvant chemotherapy program and to define its place in the management of testis tumor's treatment.