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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 |
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 |
Productivity and forage quality of elephantgrass (Pennisetum purpureum) are directly affected by weed interference. The difficulty of control of these species is one of the main barriers to production and use of the forage as feedstock, as well as to the production of biomass for energy use. Despite the great progress in agro-ecological weed control techniques, herbicides are still indispensable. Thus, the rational use practices of these products should be improved in order to produce quality fo Status: Completed Start date: Fri Aug 01 00:00:00 GMT-03:00 2014 |
Spittlebug, Mahanarva spectabilis (Hemiptera: Cercopidae) is capable to cause drastic losses in production and quality of pastures established with grasses. Currently, the use a grass resistant cultivar, to be obtained by means of constitutive antibiosis, is the best spittlebug controlling method. However, the time required for releasing a cultivar after detecting a spittlebug-resistant strain is relatively long. Allied to this, one should take into consideration that the adaptations of Status: Completed Start date: Mon Jun 01 00:00:00 GMT-03:00 2015 |
Brazil leads the research on reproduction of forage plants, but faces as a challenge the low diversity of pastures, mainly formed by apomictic plants. Apomixia - asexual reproduction by seeds - is an area of biotechnology with great potential to optimize the genetic improvement of these species, as it develops genetic materials and procedures for plant cloning by the direct use of seeds. This project proposes the determination of strategies to regulate the genes associated with the mode of repro Status: Completed Start date: Mon Jun 01 00:00:00 GMT-03:00 2015 |
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 |
The growing biofuel industry generates by-products that have shown promise as energy and protein feeds in ruminant diets. The objective of this project was to determine the effects of by-products of biodiesel production, obtained from different sources of oilseeds, on the in vitro degradability of nutrients, in vitro ruminal fermentation and methane gas production. Palisadegrass ( Brachiaria brizantha) was used as a model. Its isolated incubation was considered as a contro ... Status: Completed Start date: Wed Aug 01 00:00:00 GMT-03:00 2007 |
Alzheimer's disease (AD) is a progressive degenerative disease of the central nervous system (CNS) that mainly affects people over 65 years of age, resulting in loss of memory and cognitive functions such as language, attention, orientation and reasoning. According to the World Health Organization (WHO), 24.3 million people worldwide suffered from AD and other types of dementia in 2007, with a doubling of this number every 20 years. That Organization also stresses that the impact of AD in develo Status: Completed Start date: Tue Apr 01 00:00:00 GMT-03:00 2008 |