Genetic Vegetable resources, globally, involve a number of around 300,000 identified species, of which 30,000 are edible and only 30 consist of foods that feed the world's population. However, from this total, only three species provide 50% of proteins necessary in a regular diet (rice, wheat and corn). This situation has been stimulating a great number of researchers in the quest to increase the number of species dedicated to feed the population. Brazil is considered the world's greatest source

Status: Completed     Start date: Thu Jan 01 00:00:00 GMT-03:00 2009

The goal is to assess the economic and ecological effectiveness of different models of forest restoration of degraded areas through the induction of secondary ecological succession, by natural regeneration, planting of seedlings, and the direct sowing of native and exotic tree species to compose the Legal Reserve.

Status: Completed     Start date: Sat Oct 01 00:00:00 GMT-03:00 2011

Concern about the environmental impacts of agricultural activities has taken on a large dimension, especially in the last decade. These impacts are expressed, for example, in reduction of biological diversity, erosion and contamination of soils, silting and contamination of water springs, increase of agrochemical residues in food, among others. However, the incorporation of the concept of sustainability has led agricultural research in the growing search for alternative and sustainable models of

Status: Completed     Start date: Fri Apr 01 00:00:00 GMT-03:00 2011

Silvopastoral systems may be an option to prevent grassland degradation because of the potential to control erosion and the ability of some tree species to add nitrogen and other nutrients to pasture, improving soil fertility. In view of this potential, in-depth evaluations of the soil and plant components of these systems are critical. The objective of this project was to verify the effect of trees on soil quality (fertility, biomass and microbial activity) and to evaluate the dry matter produc

Status: Completed     Start date: Thu Mar 01 00:00:00 GMT-03:00 2007

Pastures of Cynodon spp. and elephantgrass ( Pennisetum purpureum Schum.) have their productivity and forage quality directly affected by weed interference. The difficulty of controlling weeds is one of the main obstacles to growing and using these forage crops as an input in animal feeding, as well as in the production of elephantgrass biomass for energy use. Despite the progress in agroecological weed control techniques, herbicides are still indispensable, especially in crops on ...

Status: Completed     Start date: Sat Jul 01 00:00:00 GMT-03:00 2017

Ecological alternatives may contribute to the attainment of sustainability of productive family units through the balanced use of natural resources in the Amazon. Among these viable alternatives, stand out in the Amazon the initiatives of land preparation without the use of fire, such as the Tipitamba Project, the Roça without Fires Project, Agroforest Systems and agroecological alternatives practiced by the region's farmers. The availability of knowledge and practices through the training of en ...

Status: Completed     Start date: Tue Mar 01 00:00:00 GMT-03:00 2011

This project aims to recover legal reserve areas (ARL) or areas of permanent preservation (APP), in regions of family agriculture at the Brazilian Oriental Amazon, in the hopes of reducing impacts resulted from agricultural and forest practices. The project aims to train at least 150 family farmers in management of natural resources in areas which are close to bodies of water, and also to recover and monitor these areas' environment. The project will be developed in micro-basins of the Bragança, ...

Status: Completed     Start date: Mon Jun 01 00:00:00 GMT-03:00 2009

This project aims to evaluate the productive potential of explored forest areas after one cutting cycle (30 years) and propose a forestry management system for the second cutting cycle in the Amazon. Technological ability and floristic variety of arboreal species will also be evaluated, in areas previously submitted to forest exploration 30 years ago (Tapajós National Forest). This project, headed by Oriental Amazon Embrapa in partnership with Federal Rural University of the Amazon, aims to deve ...

Status: Completed     Start date: Sat Mar 01 00:00:00 GMT-03:00 2008