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| Soil quality may be measured through the use of indicators, which are attributes that measure or reflect the environmental state or condition of sustainability of the referred ecosystem. The knowledge regarding the spatial distribution of soil quality and its levels becomes essential in this case, once it favors the study of their relation with the type of soil management, with the environmental impact and the productive capability of agricultural systems. For such, it is important to have a met Status: Completed Start date: Tue Sep 01 00:00:00 GMT-03:00 2009 |
| Brazil is a tropical country with an extensive territorial area and vast plant diversity. This makes the weed species that infest the crops be widely varied. Such characteristics differentiate Brazil from other countries with temperate climates. GM crops that are resistant to herbicides, especially to glyphosate, have created a new scenario for weed control in Brazilian agriculture. Farmers have adopted RR technology right away as efficiency and cost are its main benefits. The use of glyphosate Status: Completed Start date: Tue Sep 01 00:00:00 GMT-03:00 2015 |
| Wheat ( Triticum aestivum L.) is the world's second largest crop and Brazil has taken second place in wheat production in South America. However, productivity in this crop can be limited due to occurrence of some diseases, one of which, wheat blast, caused by the Magnaporthe grisea fungus, has caused large productivity losses that can reach 72% depending on the time of infection. With the expansion of wheat crops to other Brazilian regions such as the Midwest, the fungus has been settling in and Status: Completed Start date: Sat Nov 01 00:00:00 GMT-03:00 2014 |
| Losses caused by the parasitism by ticks in cattle are estimated at 3.24 billion dollars annually in Brazil, largely due to procedural errors, such as the systematic and often inappropriate use of acaricides, resulting in selection and proliferation of populations of acaricide-resistant ticks. In addition, there is a growing demand for new alternatives in pest control, aiming at minimum use of chemicals, in order to preserve the environment and ensure residue-free food. In this context, biologic Status: Completed Start date: Sun Jun 01 00:00:00 GMT-03:00 2014 |
| Fine-texture soils in Brazil are generally deemed to have low agricultural potential. Due to low levels of clay and organic matter, they usually present low nutrient and water retention capacity, and, when poorly managed, may produce negative impacts associated with high risks of groundwater contamination by nutrients and other chemical pollutants, or with potential erosion when directly exposed to rain. Status: Completed Start date: Mon Oct 01 00:00:00 GMT-03:00 2012 |
| The use of nanotechnology has been putting nanoparticles and nanostructures in contact with live organisms in ways not yet fully understood. In agriculture, this interaction can occur on a large scale, such as in the applications of controlled release nanostructure-encapsulated pesticides whose toxicity inherent to the drug release system still requires continual verification. Cases like this have motivated the proposal of this project, whose objective was to evaluate the potential impact on liv Status: Completed Start date: Fri Apr 01 00:00:00 GMT-03:00 2011 |
| Whitefly is currently one of the main pests in Brazil. The insect causes direct damages (sap suction, toxin injection, and physiological disorders) and indirect damages (helping sooty mold grow and transmitting phytopathogenic viruses). Reports of damages started right after its entrance in the country, the likely source of which has been traced to an import of ornamental plants in the 1990s. After this introduction, the insect became very well adapted to Brazilian cropping conditions and spread Status: Completed Start date: Mon Sep 01 00:00:00 GMT-03:00 2014 |
| Under the strong impact of the demand for energy and the need to develop alternative technologies to replace oil, the sugarcane industry is expanding and boosting interest in the assessment of both private and social costs and benefits in sugar and energy production. The importance of environmental issues in society has inserted this topic in the agenda of public and private planners through their concern with the preservation of water resources, soil fertility, and biodiversity, as well as with Status: Completed Start date: Sun Jan 01 00:00:00 GMT-03:00 2012 |
| The pest aphids Sipha flava and Rhopalosiphum padi have caused significant injuries in elephantgrass and brachiaria swards, respectively. Thus, the objective of this project was to evaluate the bioecology of these pest insects and the predator Chrysoperla externa. The biological aspects of the pests were studied at 12, 16, 20, 24, 28 and 32ºC. Temperatures of 20ºC and 24ºC were more favorable for insect development, and this temperature range is the most appropriate for t ... Status: Completed Start date: Wed Aug 01 00:00:00 GMT-03:00 2007 |
| The organic production of vegetables is an activity of major social and economic importance in Brazil's Distrito Federal, and it has grown about 30% larger every year, causing a higher demand for knowledge on the establishment of new crops. Tomato is one of the main cultivated vegetables in terms of economic importance, which is central to the management of organic vegetable plots due to countless related plant health problems. From an agroecological standpoint, environmental diversification is Status: Completed Start date: Sat Nov 01 00:00:00 GMT-03:00 2008 |