La pulpa de café ha sido incorporada en los sistemas de producción pecuarios a través de su uso en silos dada su aceptable composición nutricional. La presente investigación se desarrolló en la finca La Gaviota, localizada en la vereda Matajira del municipio de Pamplonita (Colombia), con el objetivo de evaluar el efecto que tiene el tiempo de fermentación sobre la calidad nutricional del ensilaje de pulpa de café. Se ...

Site-specific management demands the identification of homogeneous subfield regions within the field or management zones (ZM). However, due to the spatial variability of soil variables, determination of ZM from several variables, is often complex. Although the zonification or delimitation of MZ may be univariate, it is more appropriate to consider all variables simultaneously. Fuzzy k-means clustering (KM) and principal ...

En la Región Sur del Ecuador se comparó la producción de avena (Avena sativa L.) y trigo (Triticum vulgare L.) obtenida a partir de un sistema de forraje verde hidropónico (FVH), frente al sistema de producción convencional o a campo abierto (CA). El experimento para cada sistema y cultivo se estableció bajo un diseño de bloques al azar, instalando cuatro tratamientos (dos en FVH y dos a CA), con tres repeticiones cada ...

In this study, the total waste from the production of rainbow trout, Oncorhynchus mykiss ( Wa l b a u m ) (Salmoniformes: Salmonidae) in Lake Tota freshwater ecosystem, located in the Department of Boyacá, Colombia, and its potential impact on the lake was estimated. This economic activity has been carried out intensively since 2005 using submerged cages in the lake. With data obtained from the National Authority for ...

Soil deterioration in the Valle del Cesar has generated a gradual reduction of livestock in their productive response to pastures. That effect has been more intense in areas managed under a grass monoculture. As an alternative, an integration of agricultural, forest, and livestock production systems is proposed as an strategy for improving both environment preservation and production. The purpose of this study was to ...

This study aimed to determine the kinetics of vitamin C degradation in a product made from mango pulp (Mangifera indica L.) and whey protein powder, in order to determine the effect of temperature on its conservation and further evaluate the behavior of the L*, a*, b* and the total color difference (ΔE) in the powder product. Vitamin C was determined by the aoac 967.21/90 method using 2,6-dichlorophenol indophenol, and ...

Vascular wilt caused by the fungus Fusarium oxysporum is considered the main constraint of cape gooseberry, Physalis peruviana, production in Colombia. P. peruviana and P. floridana genotypes with differential resistance responses against F. oxysporum have been identified previously. In the present study, the genotypes were evaluated in order to complement the knowledge of cytogenetics diversity in Physalis and to ...

In previous discussions about technological change, “Socially Appropriate Technologies” emerged as one of the alternatives to the modernizing model of technology transfer that prevailed for many years in Latino America. However, despite the time elapsed since its conceptual creation, it is not easy to find studies valuing interventions carried out with this type of approach. This paper pretends to approximate the subject ...

Four parasitoids of the passion fruit flower bud fly, Dasiops inedulis Steyskal (Diptera: Lonchaeidae) were collected in the present study, i.e., a larva-pupa type parasitoid, Utetes anastrephae (Viereck) (Hymenoptera: Braconidae), and three pupal parasitoids, namely Pachycrepoideus vindemmiae Rondani, Spalangia sp. (Hymenoptera: Pteromalidae) and Aganaspis sp. (Hymenoptera: Figitidae). In the field we observed a species ...

Neoleucinodes elegantalis Guenée (Lepidoptera: Crambidae) represents the most damaging pest of the Solanaceae family. Current studies have demonstrated that the species has differentiated into four races according to variations in female genitalia, wing morphometrics and sequencing of the cytochrome Oxydase (CO1) mitochondrial gene. The number of males captured in Colombia and Ecuador were registered using traps baited ...