NDLI: Spatial distribution of weed diversity within a cereal field

Please wait, while we are loading the content...

Spatial distribution of weed diversity within a cereal field

Content Provider	Springer Nature Link
Author	Izquierdo, J. Blanco Moreno, J. M. Chamorro, L. González Andújar, J. L. Sans, F. X.
Copyright Year	2009
Abstract	Weeds are key components of agroecosystems because they support biological diversity within crop fields. Ecological indicators of weed diversity are usually assessed on a field scale, but weeds are distributed unevenly within fields. Here, we explore spatial distribution of diversity in weed seed banks, and how a failure of grass weed control may affect biodiversity indicators. We studied spatial distribution and stability of species richness, Shannon’s diversity index, and Pielou’s evenness index of a weed seed bank, site-specifically and for the entire field, over three years in a commercial winter wheat field regularly treated with narrow- and broad-leaved herbicides. 254 soil samples were taken on 10 m × 10 m grids at the beginning of each season. Seeds were identified by germination in a greenhouse and indices were assessed for each point. The spatial structure of the indices was described by spherical isotropic semivariograms. Our findings show that diversity and evenness computed for the entire field both decreased by 63% after lack of grass weed control, and increased 32% and 31%, respectively, the following year. However, richness, diversity and evenness were not homogeneous across the field. Diversity and evenness became increasingly patchy over time, as shown by a spatial dependence increasing by 21% and 40%, respectively, after two years. This finding is related to the reduction in the patch extension of broad-leaved species due to broad-leaved herbicide application each year and the expansion of grass patches due to the lack of grass control in the first year. Spatial location of patches was not stable over time. Nevertheless, weedy areas remained on the field and represent plant diversity caches that may contribute to maintaining global biodiversity. This information is missed if a single biodiversity index is computed for the entire field. Knowledge of spatial distribution of weed diversity within a field will be useful for identifying wildlife conservation areas and understanding changes in biodiversity in cropland ecosystems better.
Starting Page	491
Ending Page	496
Page Count	6
File Format	PDF
ISSN	17740746
Journal	Agronomy for Sustainable Development
Volume Number	29
Issue Number	3
e-ISSN	17730155
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-01-01
Publisher Institution	Institut National de la Recherche Agronomique (INRA)
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Agriculture Soil Science & Conservation Sustainable Development
Content Type	Text
Resource Type	Article
Subject	Environmental Engineering Agronomy and Crop Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Cereal landraces for sustainable agriculture. A review

Remarkable changes of weed species in Spanish cereal fields from 1976 to 2007

Weed harrowing in organically grown cereal crops avoids yield losses without reducing weed diversity

Spatial distribution of weed diversity within a cereal field

Weed control strategies for grain legumes

Weed dispersal by farming at various spatial scales. A review

Agronomy for sustainable agriculture. A review

Ants and sustainable agriculture. A review

Soils and sustainable agriculture. A review

Spatial distribution of weed diversity within a cereal field

Similar Documents

Cereal landraces for sustainable agriculture. A review

Remarkable changes of weed species in Spanish cereal fields from 1976 to 2007

Weed harrowing in organically grown cereal crops avoids yield losses without reducing weed diversity

Spatial distribution of weed diversity within a cereal field

Weed control strategies for grain legumes

Weed dispersal by farming at various spatial scales. A review

Agronomy for sustainable agriculture. A review

Ants and sustainable agriculture. A review

Soils and sustainable agriculture. A review

Spatial distribution of weed diversity within a cereal field