Spatial and temporal stability of weed patches in cereal fields under direct drilling and harrow tillage
2020
Izquierdo Figarola, Jordi | Recasens, J. | Royo-Esnal, Aritz | Baraibar Padró, Bárbara | Milne, Alice E. | Torra Farre, Joel | Webster, Richard | Universitat Politècnica de Catalunya. Departament d'Enginyeria Agroalimentària i Biotecnologia
The adoption of conservation agriculture (CA) techniques by farmers is changing the dynamics of weed communities in cereal fields and so potentially their spatial distribution. These changes can challenge the use of site-specific weed control, which is based on the accurate location of weed patches for spraying. We studied the effect of two types of CA (direct drilling and harrow-tilled to 20 cm) on weed patches in a three-year survey in four direct-drilled and three harrow-tilled commercial fields in Catalonia (North-eastern Spain). The area of the ground covered by weeds (hereafter called “weed cover”) was estimated at 96 to 122 points measured in each year in each field, in 50 cm × 50 cm quadrats placed in a 10 m × 10 m grid in spring. Bromus diandrus, Lolium rigidum, and Papaver rhoeas were the main weed species.
Show more [+] Less [-]This research was funded by the Spanish National Program (project: AGL2010-22084-C02-0). A.E.M. wasfunded by the Institute Strategic Programme (ISP) grants, “Soils to Nutrition” (S2N) grant number BBS/E/C/000I0330,and the joint Natural Environment Research Council (NERC) and Biotechnology and Biological Sciences ResearchCouncil (BBSRC) ISP grant “Achieving Sustainable Agricultural Systems” (ASSIST) grant number BBS/E/C/000I0100,using facilities funded by the BBSRC
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