Tag Archives: ammonia emissions

322–332 A. Aboltins, L. Melece and J. Priekulis
Model for ammonia emissions’ assessment and comparison of various dairy cattle farming systems and technologies
Abstract |
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Model for ammonia emissions’ assessment and comparison of various dairy cattle farming systems and technologies

A. Aboltins¹, L. Melece²* and J. Priekulis¹

¹Latvia University of Life Sciences and Technologies, Institute of Agricultural Machinery, Cakstes blvd.5, LV-3001 Jelgava, Latvia
²Institute of Agricultural Resources and Economics, Department of Economics, Struktoru str. 14, LV-1039 Riga, Latvia
*Correspondence: ligita.melece@arei.lv

Abstract:

A dairy cattle farming is an important source of ammonia emissions, particularly in Latvia. Models using a wide range in level of detail have been developed to represent or predict these emissions. Besides, models are useful for improving the understanding of various farm processes and their interacting effects on ammonia emissions. The model for ammonia emissions’ assessing or representing, predicting and comparing for manure management chain of dairy cattle was created. The model provides a tool for evaluating mitigation and management strategies, abatement measures and techniques to reduce of ammonia emissions and improve the sustainability of dairy production systems both on the dairy farm and at the national level. It could be used as a supplement tool for officials and experts. The model estimates those ammonia abatement measures and techniques that have the highest emission reduction potential and opportunities for implementation on Latvia’s dairy farms. The simulation model assesses the ammonia emissions into each stage of the farming: animal housing, manure management – manure handling and storage, and manure application. An important stage in reducing ammonia emissions is manure storage. It should be noted that the main task of the model was to compare the impact of the ammonia emission reduction options. When entering the number of animals, the average nitrogen quantity per animal, the percentage distribution of manure quantities, the first three levels of the program can be used to estimate the amount of nitrogen to be incorporated into the soil and, as the difference; and the amount of ammonia emissions.

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499-504 R. Vettik and K. Tamm
The impact of a farm’s annual cattle slurry yield on the options for moving the slurry from stable to plot: a simulation study
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The impact of a farm’s annual cattle slurry yield on the options for moving the slurry from stable to plot: a simulation study

R. Vettik and K. Tamm

Estonian Research Institute of Agriculture, Teaduse 13, Saku, Estonia;e-mail: raivo.vettik@eria.ee

Abstract:

The economical efficacy is substantial on both occasions for feeding plants with nutrients and moving the manure from stables to the plots. The aim of the present research is to explain the limit values for the annual amount of slurry and average plot distance on a farm as conditions to decide in favour of a personal eco-friendly slurry distributor or custom equipment. In their previous researches, the authors have composed models to calculate slurry management costs for different technologies depending on plot distance, taking into account ammonia emissions. In the present study, simulations were made using the composed calculation models to compare slurry distribution costs for four slurry application technologies.Calculations show that if the annual amount of slurry exceeds 4000 m3, then for plot dis-tance over 2 km, custom slurry distribution is cheaper than using the farm’s own equipment. How-ever, if the annual quantity of slurry exceeds 16,000 m3, then the limit value for distance is 5 km.If the annual amount of slurry is 4000 m3, then full custom service is cheaper than thetechnology in which the farm’s own slurry distributor and custom transportation is used. In the case of the annual amount of 16,000 m3, it is less expensive to use the farm’s own slurry distributor and custom transportation. In order to benefit from the use of the farm’s own distributor the minimum value for annual slurry amount is 5600 m3.

Key words:

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499-504 R. Vettik and K. Tamm
The impact of a farm’s annual cattle slurry yield on the options for moving the slurry from stable to plot: a simulation study
Abstract |
Full text PDF (133 KB)

The impact of a farm’s annual cattle slurry yield on the options for moving the slurry from stable to plot: a simulation study

R. Vettik and K. Tamm

Estonian Research Institute of Agriculture, Teaduse 13, Saku, Estonia;e-mail: raivo.vettik@eria.ee

Abstract:

The economical efficacy is substantial on both occasions for feeding plants with nutrients and moving the manure from stables to the plots. The aim of the present research is to explain the limit values for the annual amount of slurry and average plot distance on a farm as conditions to decide in favour of a personal eco-friendly slurry distributor or custom equipment. In their previous researches, the authors have composed models to calculate slurry management costs for different technologies depending on plot distance, taking into account ammonia emissions. In the present study, simulations were made using the composed calculation models to compare slurry distribution costs for four slurry application technologies.Calculations show that if the annual amount of slurry exceeds 4000 m3, then for plot dis-tance over 2 km, custom slurry distribution is cheaper than using the farm’s own equipment. How-ever, if the annual quantity of slurry exceeds 16,000 m3, then the limit value for distance is 5 km.If the annual amount of slurry is 4000 m3, then full custom service is cheaper than thetechnology in which the farm’s own slurry distributor and custom transportation is used. In the case of the annual amount of 16,000 m3, it is less expensive to use the farm’s own slurry distributor and custom transportation. In order to benefit from the use of the farm’s own distributor the minimum value for annual slurry amount is 5600 m3.

Key words:

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