Due to the importance of the coffee (Coffea arabica L.) in exports of Nicaragua, an experiment on the cultivation of coffee in the San Dionisio (11 ° 53 '80' 'LN, 86 ° 14' 05 'was established LO and 552 m), San Marcos, Carazo, Nicaragua, in order to evaluate the growth, development and production of coffee under three sheets of supplementary drip irrigation (0, 10, 20 and 30 mm) applied from 14 April 2013 to the normal presence of rainfall in the area. The treatments were placed in a randomized complete block design (BCA) with four replicates. The variables fruit peel, leaf area index, bandolas growth, formation of knots and production potential analysis of variance (ANOVA) and Tukey (α = 0.05) was applied. The irrigation depth of 20 mm favored vegetative growth, formation of productive structures and productivity

A coffee agroforestry experiment was established in 2001 in the Municipality of Masatepe, Nicaragua; main treatments were legume and non-legume arboreal species with subplots of intensive and moderate use of organic and conventional management of fertility, pests, diseases and weeds. Soil chemical characteristics, mineralization of nitrogen, carbon and microbial biomass were measured in each plot for a composite soil sample. To measure biomass production two trees per plots were pruned and N content determined. The N balance was calculated by determining the extracted N in the coffee berries, firewood production compared to the amount of N contributed by organic and chemical fertilizers. The results show that acidity fell under intensive organic management compared to moderate conventional, while phosphorus, potassium and the microbial biomass were all higher under organic than conventional. The CIC, total N and total C, were all lower in the 2004 with respect to the 2001. In both years there were no statistical differences between the treatments. The rate of mineralization of the N was lower under the sun treatment total with respect to the treatments with arboreal shade; and higher the intensive organic management than conventional management. The amounts of residues produced by pruning are greatest for Inga laurina, nevertheless, in the year when trees were thinned abebuia. rosea it surpasses it. The nitrogen balance was negative for RESUMENSe estableció un experimento de un sistema agroforestal con el cultivo de café en el año 2001 en el Municipio de Masatepe, Nicaragua; estableciéndose en las parcelas principales especies arbóreas leguninosas y no leguminosas y en las subparcelas niveles de fertilizantes orgánicos y químicos aplicados a diferentes cantidades para el manejo de la fertilidad del suelo, enfermedades, plagas insectiles y malezas, con el propósito de establecer los cambios en la fertilidad del suelo, la producción de residuos vegetales y el balance de Nitrógeno. Para la determinación de las variables del suelo, mineralización del nitrógeno, carbono y biomasa microbiana se extrajo por parcela experimental un volumen de suelo para constituir una muestra compuesta. Para la producción de biomasa fueron muestreados dos árboles por parcela y determinados los contenidos de N; fue considerada la cantidad de N aportados por la adición de fertilizantes orgánicas y químicos. El N extraído por medio de la cosecha (grano uva) fue determinado para incluirlo en el balance. Los resultados muestran que se produce una menor acidez del suelo, y estadísticamente diferente en el Orgánico Intensivo comparado al manejo Convencional Moderado, y similar comportamiento en Fósforo, Potasio y la biomasa microbiana. En tanto la CIC, el N y el C total, resultó menor en el 2004 con respecto al 2001, en ambos años no hubo diferencias estadísticas entre los tratamientos. La tasa de mineralización del N es menor en el tratamiento a pleno sol con fertilizante

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