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Benefits of diverse agriculture on crop yield

long-term impacts of crop rotation and farming practices in a changing climate

St-Martin, Audrey (2017). Benefits of diverse agriculture on crop yield. Diss. (sammanfattning/summary) Uppsala, Sweden : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2017:41
ISBN 978-91-576-8855-2
eISBN 978-91-576-8856-9
[Doctoral thesis]

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Abstract

Using yield data from multiple long-term experiments (LTEs) covering a period ranging between 20 to 55 years, I first investigated how a specialized cropping system compared with diverse systems and whether a crop-livestock system provided added benefits compared to a stockless diverse system in terms of yield and stability (Paper I). Stockless diversification provided a valid alternative to crop-livestock systems to maintain high yields. Specifically, diverse stockless and crop-livestock systems enhanced winter cereal yield by 15% compared to the specialized system.
As a second step, I examined how crop rotation and fertilization affected yield responses in the long-term (Paper II). I found a beneficial effect of diverse crop rotation on cereal yield especially in combination with mineral fertilization.
I further investigated how cereal yields in contrasting crop rotations responded to past climatic variation, to identify the potential of diverse crop rotation to provide an adaptation to climate change (Paper III). Diversifying crop rotation represents an adaptation strategy for enhancing cereal yields, both at northern latitudes where precipitation and temperature is expected to increase, and at southern latitudes where precipitation is expected to decrease.
Finally, using soil collected in a LTE, I examined how contrasting crop rotations and soil compaction, a factor known to limit yield, influence the contribution of insect pollination to yield as well as the nitrogen acquisition of faba beans via nitrogen fixing (Paper IV). Insect pollination contributed to seed quality and the combination of crop monoculture and soil compaction reduced the capacity of the legume crop to biologically fix nitrogen.
In conclusion, diversification of cropping systems and of the crop rotation offers opportunities to maintain or enhance yield in a changing climate.

Authors/Creators:St-Martin, Audrey
Title:Benefits of diverse agriculture on crop yield
Subtitle:long-term impacts of crop rotation and farming practices in a changing climate
Series/Journal:Acta Universitatis agriculturae Sueciae (1652-6880)
Year of publishing :2017
Depositing date:11 May 2017
Volume:2017:41
Number of Pages:46
Papers/manuscripts:
NumberReferences
ISt-Martin, A., G. Vico, G. Bergkvist and R. Bommarco (2016). Diverse cropping systems enhance but do not always stabilize yield in conventional agriculture (accepted after minor revision at Agriculture, Ecosystems & Environment).
IISt-Martin, A., L. Marini, G. Vico, G. Baldoni, A. Berti, A. Blecharczyk, K. Huss-Danell, I. Malecka-Jankowiak, F. Morari, Z. Sawinska, R. Bommarco. Long-term effects of crop rotation and manure fertilization on crop yield (manuscript).
IIISt-Martin, A., L. Marini, G. Vico, G. Baldoni, A. Berti, A. Blecharczyk, K. Huss-Danell, I. Malecka-Jankowiak, F. Morari, Z. Sawinska, R. Bommarco. Diverse crop rotation as adaptation to climate change: results from longterm field experiments across Europe (manuscript).
IVSt-Martin, A., R. Bommarco (2016). Soil compaction and insect pollination modify impacts of crop rotation on nitrogen fixation and yield. Basic and Applied Ecology 17, 617-626. http://dx.doi.org/10.1016/j.baae.2016.07.001
Place of Publication:Uppsala, Sweden
Publisher:Department of Ecology, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-576-8855-2
ISBN for electronic version:978-91-576-8856-9
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:F Plant production > F01 Crop husbandry
F Plant production > F04 Fertilizing
F Plant production > F08 Cropping patterns and systems
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Agrovoc terms:crop yield, diversification, crop rotation, fertilization, climate change, precipitation, biological nitrogen fixation
Keywords:Crop yield, Diversification, Crop rotation, Fertilization, Climate variation, Insect pollination, Biological nitrogen fixation
URN:NBN:urn:nbn:se:slu:epsilon-e-4163
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-4163
ID Code:14302
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
External funders:FORMAS
Deposited By: Audrey St-Martin
Deposited On:15 May 2017 11:38
Metadata Last Modified:06 Oct 2017 02:56
Project info:
Name:LIBERATION
Acronym:LIBERATION
ID:331781
Programme:European Community's seventh framework program

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