Suchergebnisse

The environments for flaxseed production and its soil-plant-atmosphere relationship, it is essential for distinguish and adapt them to the soil and crop management to obtain high sustainable yields and food diversification. Our goal was to characterize the main edaphoclimatic conditions for flaxseed production in South-Central, Brazil. The experiments were carried out in two locations representative of the edaphoclimatic conditions of South-Central, Brazil: 1 - Dourados, MS, with an Aw climate and LATOSSOLO VERMELHO Distroférrico (Haplustox) and 2 - Curitibanos, SC, with a Cfb climate and CAMBISSOLO HÚMICO (Haplumbrept), both cultivated with four flaxseed varieties: Aguará and Caburé from Argentina, UFSC (reddish-brown color) and Golden (golden-yellow color) from Brazil, grown under no-tillage system and few resources. Data from weather (air temperature and rainfall), plant growth, soil chemical and physical-hydric attributes, and post-harvest quality of flaxseed were monitored. The data were submitted to Pearson's correlation matrix (P < 0.05) and multivariate principal component analysis (PCA). PCA segregated edaphoclimatic environments and varieties into four distinct groups. Each edaphoclimatic condition there was specific attributes discriminated by PCA ( > 78%). The lowest plant height ( < 0.85m), shorter cycle length (120-142 days) and high yield (≈1.13 Mg ha-1), especially golden-yellow flaxseed, were found in Dourados. The soil organic carbon and rainfall acted directly in Curitibanos, while charge balance and air temperature responded in Dourados influence flaxseed production. Soil physical and grain attributes were similar between the environments investigated. Both agricultural environments showed feasibility for flaxseed sustainable production in Brazil, it is important to emphasize that these results are pioneers, especially the edaphoclimatic conditions from Dourados.

Galápagos is one of the most pristine archipelagos in the world and its conservation relies upon research and sensible management. In recent decades both the interest in, and the needs of, the islands have increased, yet the funds and capacity for necessary research have remained limited. It has become, therefore, increasingly important to identify areas of priority research to assist decision-making in Galápagos conservation. This study identified 50 questions considered priorities for future research and management. The exercise involved the collaboration of policy makers, practitioners and researchers from more than 30 different organisations. Initially, 360 people were consulted to generate 781 questions. An established process of preworkshop voting and three rounds to reduce and reword the questions, followed by a two-day workshop, was used to produce the final 50 questions. The most common issues raised by this list of questions were human population growth, climate change and the impact of invasive alien species. These results have already been used by a range of organisations and politicians and are expected to provide the basis for future research on the islands so that its sustainability may be enhanced.