RED DE VALOR DEL MANGO Y SUS DESECHOS CON BASE EN LAS PROPIEDADES NUTRICIONALES Y FUNCIONALES

The value chain is a new concept inside the agricultural development in Mexico that involves having in mind the demands of the consumers for the development of commercialization strategies for fruits. The nutritional and functional properties can add value to food. The mango and byproducts generated during its processing or marketing are a very important source of bioactive compounds with high added value, mostly dietary fiber, micronutrients, polyphenols, carotenoids, among many others. These can be valorisated through multidisciplinary research, innovation, technology transfer, development of market studies and business plans, as well as the accompaniment during the management and implementation of functional foods in agro-business.Mango, value chain, functional food., Agribusiness,

PHYSICAL AND CHEMICAL DEGRADATION OF AGRICULTURAL SOILS AT SAN PEDRO LAGUNILLAS, NAYARIT

The objective of this study was to evaluate the degradation to propose strategies for remediation and recovery of agricultural soils of San Pedro Lagunillas, Nayarit, Mexico; considering physical and chemical properties. Soils maintained with natural vegetation but slightly grazed and agricultural soils used for more than 20 years for the production of several crops, were compared. Eight sites were studied (four cultivated and four uncultivated), each agricultural lands (cultivated) was located at a distance of 30 to 80 m from its counterpart or soil with natural vegetation (uncultivated). Samples were obtained from the following layers: 0 to 10, 10 to 20 and 20 to 30 cm. The variables evaluated were: particles smaller than 2 mm, pH, organic matter, extractable phosphorus, exchangeable potassium, calcium and magnesium; soil texture and water infiltration rate. An analysis of variance and Tukey means test (α = 0.05) was applied. It was concluded that traditional farming practices led to adverse changes in soil chemical properties, in the upper 20 cm soil layer. Physical properties were also affected because infiltration film and water infiltration rate decreased about 50% in cultivated soils. The overall results in this work evident the need to take appropriate measures to prevent the physical and chemical degradation of cultivated soils in order to preserve this resource and maintain their productivity