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With the objective of evaluating of nutrient availability; its structure and water-air relationship under different management in inceptisol soil. The present work was carried out in the Experimental Agricultural Station "Alvaro Barba Machado". Three samplings were carried out in 2004, 2006 and 2007. They took four areas: two were planted with Leucaena leucocephala established 2 and 3 years old; one with natural grass and another with permanent crop. In all areas it were carried out chemical and physical analysis of soil, to depth of 0-10cm, 10-20cm and 20-40cm and an experiment under controlled conditions was developed, using corn as indicative plant. For statistical analysis was used the software STATGRAPHICS Plus 4.1 and SPSS ver. 8 on Windows 2000. The use of the tree Leucaena leucocephala cv Perú in an agricultural system increases the active layer of soil, this was expressed in the improvement of the soil states until 40cm of depth, such as matter organic, stable aggregate, structure factor and phosphor assumable. [ABSTRACT FROM AUTHOR]

The work was carried out in the experimental areas of the INIVIT, Santo Domingo during the years 2005 to 2006, with the objectives of evaluating the effect of the application of different organ-minerals combinations on the quality of the inceptisol soil and the yield of the banana tree FHIA-1 in the high density system. It was developed a field experiments in blocks at random with 8 treatments and 4 replicates using sugar cane filter cake, casting, NPK and ash. The best yield for plant and ha (15.84 kg and 57.02 t) was reached with the treatment sugar cane filter cake 14 kg + ash 5 kg + NPK 25%, overcoming the control without fertilization in 34.47% and to the NPK 100% in 11,08. The treatments where organic materials combined were applied with ash and 25% NPK produced the bigger positive effects on the physical and chemical parameters of increasing the soil quality of Inceptisol soil. [ABSTRACT FROM AUTHOR]