HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Williams, W. A. Articles by Lyons, J. M. Search for Related Content PubMed Articles by Williams, W. A. Articles by Lyons, J. M. Agricola Articles by Williams, W. A. Articles by Lyons, J. M.

Fossil Energy Requirement of Protein Produced by Dry Beans¹

Fossil energy cost of the cultural inputs for production of dry beans (Phaseolus vulgaris L.), a cheap source of food protein, were highest for fertilization followed in declining order by crop establishment, machinery, irrigation, harvesting, weed control, insect control, transportation, and disease control. The average energy requirement was 20.6 GJ ha^–1 and 10.4 MJ kg^–1 of beans produced, and protein energy output/energy input equalled 0.38. Dry beans grown in California compared favorably in protein produced per hectare and fossil-energy use efficiency with other crops widely grown in the USA.

Key Words: Phaseolus vulgaris L. • N fertilizer • Irrigation • Energy efficiency

² Professor, Jastro fellow, and specialist, Dep. of Agronomy and Range Science and professor, Dep. of Vegetable Crops, Univ. of California, Davis.

Received for publication September 13, 1982.