نتایج جستجو برای: natural pastures
تعداد نتایج: 485137 فیلتر نتایج به سال:
Grazing height of limpograss pastures is thought to be important in determining pasture performance and cattle weight gains, but this has not been tested under continuous grazing. The objectives of this study were to determine the effects of grazing limpograss pastures (continuous grazing) to heights of 8, 16, or 24 in during two summers and providing a non-protein nitrogen supplement to yearli...
this research was carried out to investigate the role of natural resources cooperatives in ecotourism development. this was an analysis-descriptive study conducted through survey method. statically population of study was 123 members of the directors of these cooperatives. a structured questionnaire was designed and distributed among the cooperative directors. census technique was applied in th...
Integrated Crop Livestock Systems (ICLSs) use productive diversification as a strategy to improve productivity and land efficiency. Pasture Rotations are part of ICLSs imply pasture phase included in the sequence crops. The main reasons include pastures crop systems low natural grasslands increased yield after phase. Our objective was analyze indicators management four that combine livestock pr...
For 2 grazing seasons, effects of pasture size, stream access, and off-stream water on cow distribution relative to a stream were evaluated in six 12.1-ha cool-season grass pastures. Two pasture sizes (small [4.0 ha] and large [12.1 ha]) with 3 management treatments (unrestricted stream access without off-stream water [U], unrestricted stream access with off-stream water [UW], and stream access...
during natural gas processing, water in natural gas may cause to hydrates formation in pipelines which may lead to serious damages to process equipments. given the problems raised by present of water in natural gas, glycol solvent uses to remove water.in contact of glycol with gas always an amount of btex and voc absorb along with water, which on glycol recovery process, these substances separa...
To assess the biodiversity consequences of contemporary land-use trends in Northern Europe, where agriculture is being replaced by forestry, we need a better knowledge contributions constituting habitats to biodiversity. Here, use purposefully collected data from 87 sites model how agricultural habitats, including semi-natural pastures, sown temporary grassland (leys), cereal crops, and forest ...
Driscoll et al. (1) have recently drawn attention to the risk of new pasture plants becoming invasive, because the same biological traits that promote pasture productivity may also facilitate the invasion of natural areas. The authors indicate some aspects that could mitigate the risk of invasion: namely, the use of native species to develop new pasture plants, the avoidance of new characterist...
In recent years, prices for N fertilizer have increased dramatically, reducing net returns of fertilized pasture systems. A 5-yr study from 2005 to 2009 was conducted to evaluate management strategies and relative differences in profitability for 3 methods of backgrounding calves on smooth bromegrass pastures. Forty-five steers were used each year for a total of 225 animals in a randomized comp...
Pihlgren, A. 2007. Small-scale structures and grazing intensity in semi-natural pastures effects on plants and insects. Doctor’s dissertation. ISSN 1652-6880, ISBN 91-576-7312-1. Semi-natural grasslands characterized by nutrient poor soils are among the most species-rich habitats in Europe and they harbour many red-listed species. The area of semi-natural grasslands has decreased drastically du...
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