Crop diversification for weed management in organic arable cropping systems
DOI:
https://doi.org/10.17770/etr2015vol2.274Keywords:
crop diversification, organic farming, weeds, PRODIVAAbstract
Within the ERA-net CORE Organic Plus transnational programmes supported project PRODIVA producing of the information required for a better utilization of crop diversification for weed management in North European organic arable cropping systems was started. To fulfill the goal of this project- not to eradicate weed problems, which is unlikely to happen in any arable farming system, but to maintain a diversified and manageable weed flora that can support beneficial organisms- there were data from ongoing long-termed cropping system experiments from Latvia analyzed.
It is hypothesised that: a) perennial weeds can be suppressed in the post-harvest period by improved cover crop establishment and pertinent selection of cover crop species; b) on-farm practices of crop diversification are related to weed pressure and species composition.
On the bases on data from organic farm and ongoing long-termed cropping system experiment on weed dynamics in six-field crop rotations with cover crop was concluded that red clover as cover crop after the harvest period is effective to manage perennial weeds. In crop rotation with higher proportions of cereals weed infection growth in six-field rotation with 50% share of cereals up to 3.4, but with 33.3 % share-up to 2.1 times.
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References
Ascard, J., Hatcher, P.E., Melander, B., Upadhyaya, M.K. Thermal Weed Control. Non-Chemical Weed Management: Principles, Concepts and Technology, Wallingford, UK: CAB International, 2007, pp . 155-175.
Blackshaw, R.E., Andersson, R.L., Lemerle, D. Cultural Weed Management. Non-Chemical Weed Management: Principles, Concepts and Technology, Wallingford, UK: CAB International, 2007, pp. 35-48.
Bond, W., Grundy, A.C. Non-chemical weed management in organic farming systems. Weed Research, 4. 2001, pp. 383-405.
Gerowitt, B., Bertke, E., Hespelt, S.K, Tute, C. Towards multifunctional agriculture - weeds as ecological goods? Weed Research, 43, 2003, pp. 227-235.
Hald, A.B. Weed vegetation (wild flora) on long established organic versus conventional cereal fields in Denmark. Annals of Applied Biology, 134, 1999, pp. 307-314.
Melander, B., Rasmussen, I.A., Barberi, P. Integrating Physical and Cultural Methods of Weed Control – Examples from European Research. Weed Science, 53, 2005, pp. 369-381.
Rasiņš A., Tauriņa M. Nezāļu kvantitatīvās uzskaites metodika Latvijas PSR apstākļos. Ieteikumi. Rīga: LM ZTIP,1982, 24 p.
Rasmussen, I.A., Melander, B., Askegaard, M., Kristensen, K., Olesen, J.E. Elytrigia repens population dynamics under different management schemes in organic cropping systems on coarse sand. European Journal of Agronomy, 58, 2014, 18-27.
Storkey, J. A functional group approach to the management of UK arable weeds to support biological diversity. Weed Research, 46,2006, 513-522.
Turner, R.J., Davies, G., Moore, H., Grundy, A.C., Mead, A., Organic weed management: A review of the current UK farmer perspective. Crop Protection, 26, 2007, 377-382.
Vanaga, I. Dynamics of the distribution of weeds and the possibilities of their control in cereals in crop rotation in Vidzeme. Summary of the thesis for the scientific degree Dr.agr. Jelgava, 2010.59 p.
Wortman, S.E., Francis, C.A., Bernards, M.A., Blankenship, E.E., Lindquist, J.L. Mechanical termination of diverse cover crop mixtures for improved weed suppression in organic cropping systems. Weed Science, 61, 2013, 162-170.
