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| The silvopastoral systems are a viable option to avoid degradation of pastures due to their potential to control erosion and the ability of some tree species to add nitrogen and other nutrients to the pasture, improving soil fertility. However, an important aspect in these systems refers to the competition for light between the tree/shrub and herbaceous components. Tiller production and the consequent density of inflorescences, directly related to seed production and, therefore, to natural resee Status: Completed Start date: Wed Aug 01 00:00:00 GMT-03:00 2007 |
| 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 |
| In dairy livestock systems, heifers are an important component to insure the productive endurance of the herd. Feeding dairy heifers has been based on the use of grass pastures, which undergo degradation process shortly after their establishment. As a result, it has been observed low daily weight gain in heifers. Currently, silvopastoral systems have been suggested as alternative to animal production, in view of their potential benefits such as increased soil fertility, improved forage quality, Status: Completed Start date: Fri Aug 01 00:00:00 GMT-03:00 2014 |
| Society has become increasingly aware of the need to preserve the environment and health, demanding quality standards for food and agro-ecosystems. In this context, the rational use of phytosanitary products guarantees the sustainability of food production systems, mitigating, and even eliminating the effects caused by the indiscriminate use of chemical control. Other relevant aspects to be considered are the benefits arising from the crop-livestock integration that mitigate the negative effects Status: Completed Start date: Wed Aug 01 00:00:00 GMT-03:00 2007 |
| Among the essential nutrients, nitrogen (N) is the one with the greatest potential for enhancing forage production. The efficiency of nitrogen uptake is related to the energy supply provided by the photosynthesis. However, recent practices of intensive pasture management have recommended the use of lower post-grazing residues, thus reducing the leaf area of the canopy. The objective of this project was to evaluate the effect of the timing of nitrogen fertilization in association with different d Status: Completed Start date: Fri Aug 01 00:00:00 GMT-03:00 2014 |
| Pastures assume a prominent position in the Brazilian agricultural scenario. The area occupied by forage plants accounts for three quarters of the national agricultural area. Pasture, as an exclusive food source, is the basis for nearly 90% of the beef consumed in Brazil and most of the milk produced in the country. It is estimated that, in Brazil, the grasses of the Brachiaria genus are cultivated in approximately 84 million hectares. Despite the nationwide importance of this grass for Status: Completed Start date: Sat Dec 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 |
| Pasture as an exclusive feeding source accounts for almost 90% of the beef consumed in Brazil and for most of the nearly 35 billion liters of milk produced annually in the country. It is estimated today that, in Brazil, grasses of the genus Brachiaria are cultivated in approximately 84 million hectares. In Brazil, the most cultivated species of Brachiaria are B. decumbens, B. brizantha, B. humidicola and B. ruziziensis. With the increasing agricult ... Status: Completed Start date: Tue Jul 01 00:00:00 GMT-03:00 2008 |
| Pastures assume a prominent position in the Brazilian agricultural scenario, covering about three quarters of the cultivated area nationwide. In addition to the physical aspect, pastures are the main feeding source for the Brazilian herd. Pastures account for almost 90% of the beef consumed in Brazil and for most of the 21 billion liters of milk produced annually in the country. It is estimated today that in Brazil grasses of the genus Brachiaria are cultivated in approximately 84 millio Status: Completed Start date: Tue Jul 01 00:00:00 GMT-03:00 2008 |