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Effect of management practices and free-stall construction on losses of sand used as a bedding material for dairy cows - pilot study

100%

Gaworski M., Rocha A. G. F.

Annals of Warsaw University of Life Sciences - SGGW. Agriculture

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2015

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nr 66 Agric.Forest Eng.

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The effect of management practices on the occurrence of intestinal nematodes in pigs

100%

Nosal P.

Annals of Animal Science

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2004

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tom 04

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nr 1

3

Water repellency of mountain forest soils in relation to impact of the katabatic windstorm and subsequent management practices

84%

Simkovic I., Dlapa P., Simonovicova A., Ziegler W.

Polish Journal of Environmental Studies

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2009

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tom 18

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nr 3

443-454

Even though massive winds are significant disturbing factors for forest ecosystems, studies assessing topsoil properties in relation to wind-induced changes in forest floor and, specifically, works dealing with soil water repellency are lacking. On the other hand, the majority of works aimed at the wettability of soil have been carried out on soils from arid or semiarid climatic regions. Besides that, much less attention has been dedicated to soil water repellency in boreal-temperate regions and mountainous areas in particular. Here we report on water repellency of topsoil in mountainous region of the High Tatras of northern Slovakia (central Europe), where katabatic windstorm have blown down app. 12,500 hectares of forest canopy. Different management practices applied on windblown areas together with fire impact have resulted in four types of sites in the area: harvested, reference, left on self-recovery and struck by wild-fire. In order to cover the diversity of topsoil conditions, samples were taken at four representative sites. Results of WDPT and MED measurements show that a great portion of samples exhibited considerable degree of water repellency. It was found that there are significant differences in actual water repellency and field water contents between particular groups of samples taken at individual sites. Results of multiple regression analysis showed that water repellence of topsoil material is significantly controlled by water and organic carbon contents. Besides, for fire-unaffected soils it was found that the degree of water repellence is closely related to detected values of soil reaction as well. Explained portions of WDPT and MED variances ranged from 45 up to 72%.

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Multi-Scenario Simulation Analysis in prioritizing management option for an impacted watershed system

84%

Prochnow S. J., White J. D., Scott T., Filstrup C. D.

International Journal of Ecohydrology and Hydrobiology

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2008

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tom 08

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nr 1

Waco Lake (Texas, U.S.A.) is a municipal water supply fed by largely agricultural watersheds and is characterized by poor water quality because of elevated nutrient concentrations. Watershed modeling is used to prioritize management options to reduce nutrient loading into the reservoir. A natural (pre-agricultural) system scenario of the dominant watershed resulted in 80% reduction of total phosphorus and 74% reduction of total nitrogen. Agricultural management, followed by dairy treatment fields (DTF), and then waste water treatment plants (WWTP) inflows are the largest contributors of nutrients into Waco Lake. Removing small flood control reservoirs (U.S. Soil Conservation Service PL-566 design) resulted in an 82% increase in total phosphorus and a 92% increase in total nitrogen, while the removal of other anthropogenic features resulted in decreased nutrient loading. PL-566 reservoirs store nutrients in the watershed, and are probably useful in pollution mitigation.

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Soil and nutrients losses under different management practices in Ghana

84%

Mesele S. A., Amegashie B. K., Quansah C., Adigun J. K.

Acta Agrophysica

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2016

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tom 23

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nr 4

Integrated soil nutrient management is required to increase and sustain agricultural productivity. Assessment of soil, organic matter and nutrient losses was carried out in a 3-year integrated maize cropping system in Ghana. The treatments: no-till (NT), minimum tillage (MT), conventional tillage (CT) and soil amendments (Control, NPK, poultry manure and their combination), were arranged in a factorial design. The results showed soil loss to range from 0.140- 4.907 Mg·haˉ¹ in the order of NT < MT < CT < Bare. Soil loss reduction over the Bare was 88% by ½ Rates of NPK+PM, 87% by PM and 85% by NPK. Soil depth reductions in NT and MT were 92% lower than in CT. The loss of organic matter ranged from 47.6 kg·haˉ¹ to 120.70 kg/ha and was in the order of Bare > CT > MT > NT. Nutrient losses followed the same trend. Losses in soil organic matter, N, P, K, Ca, Mg and Na under tillage x soil amendments interactions were higher in the CT and bare plots. NT and MT, which were recognised as conservation tillage systems, amended with combination of organic and mineral fertilisers were found as better options in minimising soil quality degradation.

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Seasonal changes in labile organic matter, mineral nitrogen, and N2O emission in a loamy sand Orthic Luvisol cultivated under three management practices

84%

Dabek-Szreniawska M., Balashov E.

International Agrophysics

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2007

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tom 21

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nr 2

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Effects of different management practices of organic uphill grasslands on the abundance and diversity of soil mesofauna

67%

Gruss I., Pastuszko K., Twardowski J., Hurej M.

Journal of Plant Protection Research

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2018

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tom 58

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nr 4

In this study the effect of different grassland managements (cattle grazing with different intensities and mowing) on soil mesofauna, i.e. mites (Acari) and springtails (Collembola), was studied. Mites and springtails are the most numerous representatives of soil mesofauna organisms living in the upper soil layers (up to 5 cm). Soil mesofauna groups or species are commonly used as bioindicators of soil health. The experiment was carried out from 2007 to 2009 in the West Sudety Mountains, Poland. Pastures and meadows were under organic farming management, without pesticides or synthetic fertilizers, and restricted livestock density. Soil samples were taken three times a year (in May−June, July and October) from pastures grazed at different frequencies: once, twice and four times a year, alternate management (grazed and mown pasture) and mown meadow. Mites were identified according to orders or suborders (Oribatida, Gamasida, Prostigmata, Astigmata), while springtails to the species level. The data were analysed using a general linear model (GLM). The mesofauna taxa in relation to the treatment and date were analysed with the canonical correspondence analysis (CCA). The data from three years showed that most soil mesofauna assemblages occurred in significantly higher numbers on the pasture grazed once or twice and on alternate managed pasture than in pasture grazed four times a year and mown meadow. The CCA analysis showed the preference of most springtail species to pasture grazed once a year, while mites preferred pasture grazed twice a year and alternate management. The number of species and the abundance of the most numerous species (Protaphorura pannonica, Desoria multisetis and Folsomides parvulus) did not differ significantly between treatments. To summarize, cattle grazing once or twice a season or alternate management (grazing and mowing once a season) have a positive impact on soil mesofauna.

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Zero waste: an innovation for less polluting emission processes, resource management practices and policies

67%

Ekanem C. H., Ekanem H. E., Eyenaka F. D., Isaiah E. A.

International Letters of Natural Sciences

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2013

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tom 05

The rising levels of greenhouse gases (GHGs) in the Earth‟s atmosphere have the potential to cause changes in our climate. Some of these emission increases can be traced directly to solid waste. Landfills are among the largest emitters of carbon dioxide and methane, the key GHGs. Thus, effective mitigation of these emissions through formalization of waste reduction into the waste management system to reduce land filling could provide environmental benefits of reducing the adverse impacts of climate change. This paper therefore proposes waste prevention and recycling-jointly referred to as waste reduction as better and most potent strategies for the management of solid waste and for reducing greenhouse gases and calls on both the government and private agencies to check or control the increasing pollution or abuse of the environment by enforcing compliance with the laid out Policies, Pronouncements, Regulations and enacted Legislation especially in the developing countries. The study concludes that by choosing to prevent waste and recycle, less waste will be generated, the need for landfill will be minimal, energy demand will decrease, fewer fossil fuels will be burned and less methane and carbon dioxide will be emitted to the atmosphere which helps to curb climate change.

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Economic and toxicological aspects of pesticide management practices: empirical evidence from Turkey

67%

Yilmaz H.