Blackberries play an important role in human nutrition, due to the elevated content of certain bioactive compounds including ascorbate, anthocyanins, phenolic acids, carbohydrates, and proteins. Blackberry Rubus glaucus from Colombian Andes has a high demand on regional and international markets and there is much interest in its cultivation to increase the com mercial offer. In four blackberry producing municipalities of Cundinamarca province, fruits were harvested for different quality tests based on the availability of hydric resources in the zone and their influence on fruit characteristics according to the precipitation of each zone, since the crops did not have an irrigation system. The variables, such as size, fresh weight, tex ture, pH, titratable total acids (TTA), total soluble solids (TSS), and color were evaluated to compare the quality of the fruits between the municipalities, finding that fruits from Silvania had the greater size but, in turn, were the least consistent. El Colegio zone presented the sweetest fruits and together with Pasca had the highest acidity percentage. The color of Pasca and Silvania fruits was the most attractive for commercialization parameters. These parameters, even when management and agro-climatic conditions between municipalities were very similar, allows knowing the positive attributes and determine the factors that need to be improved and to project on a short-term future productions acceptable on the international market.

Albion is a strawberry (Fragaria x ananassa Duch.) plant variety that belongs to the Rosaceae family, which is notable in Colombia because of its vitamin content and organoleptic characteristics. Fruits of this variety from four municipalities (Mosquera, Guasca, Sibate, Facatativa) in the province of Cundinamarca were evaluated. Significant differences in physical and chemical characteristics were detected between fruits of the four areas. For the physical parameters, fruits from Mosquera were notable because of their large size and biomass content. The specific chemical qualities of the fruits from Guasca make them important for the industry and processing. The fruits from Sibate had an acceptable content of citric acid and, at the same time, a high content of sugars, qualities that result in high acceptance for products in a fresh market. Finally, the fruits from Facatativa were characterized by intense colors and attractiveness to final consumer. Because of the varying conditions of each municipality, the fruits presented different strengths, so the implementation of new harvesting technologies is recommended so that all producers in the province can achieve the same high-quality characteristics in order to obtain worldwide recognition.

El manejo hídrico del cultivo de fresa es uno de los principales problemas de producción en Colombia, reflejado en las perdidas de frutos o deformación de estos. Plantas de dos variedades de fresa (Fragaria x ananassa Duch), fueron irrigadas tanto en condiciones óptimas de riego como en déficit hídrico leve, en un macro túnel en la Sabana de Bogotá. Para el manejo hídrico se realizó el seguimiento durante cinco meses de variables climáticas (temperatura, humedad relativa, radiación PAR y déficit de presión de vapor) y del cultivo (temperatura del dosel, contenido de humedad de sustrato y conductancia estomática), buscando validar mediante la correlación de estos métodos conocidos el seguimiento del estado hídrico de las plantas de fresa mediante el método del índice de estrés hídrico del cultivo - CWSI. Se concluye que las imágenes termográficas mediante el CWSI son una herramienta válida y completa para la detección de estrés hídrico en cultivos protegidos de porte bajo, dada la alta correlación con otros métodos, y la ventaja que ofrece de relacionar el seguimiento de las características fisiológicas del cultivo con las variables climáticas que lo afectan.

The tests were conducted in the municipality of Carmen de Viboral, 40 minutes from the city of Medellin (6º05'09"N and 75º20'19"W, 2.150 m a.s.l.). Three greenhouses with the same dimensions were used, with different channel heights of 2, 2.5, and 3 m, respectively. Temperature and relative humidity measurements were taken every 30 minutes for 3 years, and crop production was assessed. The aim of the study was to evaluate the effect of the height of the greenhouse on climatic conditions generated on a chives crop (Allium schoenoprasum). A multiple linear regression, colinearity analysis, and analysis of heteroscedasticity was performed to determine climatic variations caused by the difference in height between the greenhouses, and to determine differences in production levels.  For statistical analysis, the SPSS software was used.  The results indicate that, under the studied conditions, the greenhouse height directly affects the internal weather condition, reduction of 1 m in the minimum height of channel (from 3 to 2 m) resulted in an increase of minimum, average and maximum temperature by 0.37°C, 1.42°C and 3.56 °C, respectively, and consequently the chives crop yields, produced a 4.78% higher fresh weight of chives.