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The Spanish-language version of U.S. Department of Energy's consumer guide to saving energy and money at home and on the road.

Two Chilean isolates of Metarhizium anisopliae (Metschnikoff) Sorokin (QU-M363 and QU-M221b) were exposed to increasing doses of ultraviolet light (UV) under laboratory conditions. Conidia suspended in aqueous solution were spread on Petri dishes containing agar-agar and were placed under a UV lamp ( λ = 254 nm). Without sunscreen, exposure of conidia to UV-C light reduced germination after 40 s from 80-95% to 5-2%, for QU-M221b and QU-M363, respectively. Using the solar screen Blankophor P167® â at 1% w/v, conidia germination decreased after 40 s from 68-82% to 50-33% for QU-M221b and QU-M363, respectively. Results indicate that the sunscreen Blankophor P167 is a potential adjuvant to be used in biopesticides based on M. anisopliae .

"May 1997"--P. [4] of cover. ; Shipping list no.: 97-0353-P. ; Cover title. ; Mode of access: Internet.

Conservationist tillage systems have advantages over conventional systems because they allow the protection of natural resources. However, it is important to validate these advantages to encourage the adoption of this type of technology by farmers. The objective of this study was to determine if the type of tillage affects moisture content in the soil profile. To this end, the effect of three tillage systems on water availability in an Ultisol soil was compared. The treatments were: no tillage and burning residues (CL+Q); no tillage without burning residues (CL-Q); and traditional tillage (TRAD). The results showed that between end of tilling - beginning of internode elongation and heading, the mean value of the moisture index for CL-Q was 1.023, significantly higher than 1.001 and 0.998 corresponding to CL+Q and TRAD, while between heading and harvest the index for CL-Q was 0.963, statistically higher than 0.941 and 0.938 corresponding to CL+Q and TRAD. This effect was due to water content differences in the soil profile above 40 cm. Considering the three periods of plant development together, the mean value of the moisture index for CL-Q was 1.015, statistically higher than 0.996 and 0.990 from CL+Q and TRAD. This study confirmed that in terms of soil moisture retention in the profile of an Ultisol soil, it is recommendable to use zero tillage without burning the residues.

The “Best Practice Guideline for Agriculture and Value Chains” is a document developed by the organic movement and a contribution to the global discussion on sustainable agriculture. This document encompasses the entire value chain until the final consumer. Each party in the value chain can use the guidelines regardless of their own stage of development. The guidelines and practices the document describes are the result of a participatory process by members of the organic movement and reflect the collected thought gathered in that process. The document is intended to be formative, not normative. It divides sustainability into five complementary and interactive dimensions: social, ecological, economic, cultural and accountability. Each dimension is presented with its own objectives and is divided into a set of complementary facets with its related best practices that are discussed in terms of the values and approach of the organic movement. This document recognizes that best practice is context specific and sustainability is dynamic: what constitutes a holistic approach to best practice evolves over time for any given party. Best practice implicitly embodies an attitude of continual improvement.

El presente white paper presenta una estrategia integral para la conservación de la Amazonía mediante la diplomacia científica. Aborda la situación crítica de esta región vital, destacando su importancia ecológica y cultural. Este documento es el resultado de una metodología basada en dos procesos participativos, siendo el primero un ejercicio colaborativo dentro del Congreso de Investigación e Innovación en Sostenibilidad (SRI) y el segundo un grupo focal con expertos en diplomacia científica de América Latina, así como en el análisis de literatura. Como resultado, proponen una serie de recomendaciones prácticas y viables agrupadas en 4 categorías: 1) cooperación transdisciplinaria científica y académica, 2) el fortalecimiento de una plataforma de monitoreo conjunto, 3) la creación de un Science-Policy Hub y 4) el desarrollo de capacidades. A su vez, estas recomendaciones se categorizan en instrumentos de política pública: regulatorios (R), operacionales (O), financieros (F) y blandos (B). Un enfoque integral que combine investigación, conocimiento indígena y cooperación internacional se sugiere, junto con otras recomendaciones generales, para abordar de manera efectiva los retos ecológicos y sociales que enfrenta la Amazonía se enfatizan.

This article presents the methods and results of a multidisciplinary work focused on invertebrates and freshwater ecosystems of the Cape Horn Biosphere Reserve.

A study was conducted in Colima, México, with the objective to carry out a forage, energy and protein balance of a traditional dual purpose livestock production system based on corn stubble ( Zea mays ) and star grass ( Cynodon plectostachyus ) during the dry season. This balance was carried out taking into consideration dry matter, energy, and protein requirements, production, availability and utilization, as well as their imports to the production system. The production system was energetically sustainable, providing 99% of the cattle requirements. Dry matter and protein production were insufficient, providing only 80 and 68% of the requirements, respectively. The producer was able to solve this deficit by importing local available feedstuff, such as ground corncob with molasses and sugarcane tops ( Saccharum officinarum ). It was apparent the need to introduce new technology and methods to improve this production system. ; Con el objetivo de realizar un balance forrajero, energético y proteico durante la época seca de un sistema de producción tradicional de doble propósito sustentado en la utilización de rastrojo de maíz ( Zea mays ) y pasto estrella ( Cynodon plectostachyus ) se realizó un balance forrajero, energético y proteico en Colima, México. Se evaluó mediante un estudio dinámico la producción, disponibilidad y utilización de la materia seca, la energía y la proteína dentro del sistema, así como su introducción al sistema pare determinar su sostenibilidad considerando las necesidades nutricionales del ganado. Los resultados mostraron que el sistema es energéticamente sostenible produciendo 99% de la energía requerida. La producción de materia seca y proteína fueron deficitarias produciéndose únicamente 80 y 68% de los requerimientos, respectivamente. El productor fue capaz de complementar la falta de estos elementos mediante la introducción de alimentos producidos en la región como la punta de caña ( Saccharum officinarum ) y el olote de maíz enmelazado, detectándose además la oportunidad de mejorar estos sistemas productivos mediante la implementación de nuevas prácticas de manejo, así como la introducción de nuevas tecnologías.

"780-022-b"--Colophon. ; Introduction to an upcoming conference. ; Cover title. ; Mode of access: Internet.