Comparative energy, economic and environmental analyses of forage production systems for dairy farming

Comparative energy, economic and environmental analyses of forage production systems for dairy... Corn silage and alfalfa hay are the main feedstuffs for dairy farming, and due to the drop in corn price, there is a tendency toward replacing alfalfa hay with corn silage in dairy cow diets. This study focuses on the comprehensive assessment of alfalfa hay and corn silage production systems from energy, economic and environmental perspectives. The life cycle assessment (LCA) from raw material extraction up to delivery of forage to the dairy farms was conducted to quantify the ecoprofile of forage production. The results of comparative analyses revealed that corn production was more dependent on chemical fertilizers specially nitrogen, but alfalfa production was more dependent on electricity, water and diesel fuel for farm operations. Energy use per ton of alfalfa hay dry matter was higher than that of corn silage (2.6 vs. 2.4 GJ t−1). On the other hand, output energy of alfalfa hay was considerably higher than that of corn silage (15.8 vs. 8.0 GJ t−1). Consequently, energy use efficiency of alfalfa hay was almost two times of that of corn silage (6.1 vs. 3.3). Nevertheless, corn silage had higher benefit-to-cost ratio than alfalfa hay (2.55 vs. 2.27), and higher environmental impacts in the forms of abiotic depletion, global warming potential, marine aquatic ecotoxicity, photochemical oxidation, acidification and eutrophication potential. Finally, the effects of varying input parameters of machinery and diesel fuel, electricity, seeds, fertilizers, pesticides and transportation on LCA results were assessed via sensitivity analysis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Cleaner Production Elsevier

Comparative energy, economic and environmental analyses of forage production systems for dairy farming

Loading next page...
 
/lp/elsevier/comparative-energy-economic-and-environmental-analyses-of-forage-VQD77Bh7Yj
Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0959-6526
D.O.I.
10.1016/j.jclepro.2018.02.073
Publisher site
See Article on Publisher Site

Abstract

Corn silage and alfalfa hay are the main feedstuffs for dairy farming, and due to the drop in corn price, there is a tendency toward replacing alfalfa hay with corn silage in dairy cow diets. This study focuses on the comprehensive assessment of alfalfa hay and corn silage production systems from energy, economic and environmental perspectives. The life cycle assessment (LCA) from raw material extraction up to delivery of forage to the dairy farms was conducted to quantify the ecoprofile of forage production. The results of comparative analyses revealed that corn production was more dependent on chemical fertilizers specially nitrogen, but alfalfa production was more dependent on electricity, water and diesel fuel for farm operations. Energy use per ton of alfalfa hay dry matter was higher than that of corn silage (2.6 vs. 2.4 GJ t−1). On the other hand, output energy of alfalfa hay was considerably higher than that of corn silage (15.8 vs. 8.0 GJ t−1). Consequently, energy use efficiency of alfalfa hay was almost two times of that of corn silage (6.1 vs. 3.3). Nevertheless, corn silage had higher benefit-to-cost ratio than alfalfa hay (2.55 vs. 2.27), and higher environmental impacts in the forms of abiotic depletion, global warming potential, marine aquatic ecotoxicity, photochemical oxidation, acidification and eutrophication potential. Finally, the effects of varying input parameters of machinery and diesel fuel, electricity, seeds, fertilizers, pesticides and transportation on LCA results were assessed via sensitivity analysis.

Journal

Journal of Cleaner ProductionElsevier

Published: May 1, 2018

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off