Green-manure crops as a source of nitrogen in cropping systems
By: Maria Wivstad
Contributors: Sveriges lantbruksuniversitet
Series: Acta Universitatis Agriculturae Sueciae -- 34
Publisher: Swedish University of Agricultural Sciences
Published: 1997
Place of publication: Uppsala
Language: eng
Subjects: Nitrogen fertilizers; Crops and nitrogen; Green manure crops; Crop rotation
Notes: Abstract sheet inserted.

Thesis (doctoral)--Swedish University of Agricultural Sciences, 1997.

Includes bibliographical references.