Research article - Peer-reviewed, 2012
Influence of temperature and photoperiod on sprouting capacity of Cirsium arvense and Sonchus arvensis root buds
Liew, Josefine; Andersson, Lars; Boström, Ullalena; Forkman, Johannes; Hakman, Inger; Magnuski, EwaAbstract
Timing of treatment is a key to successful and sustainable weed management. For perennial weeds, highly energy-demanding, repeated stubble cultivation or tillage is a common strategy in organic agriculture. The fragmentation of underground material stimulates root buds to grow and, if repeated, significantly reduces the energy and nutrient resources of the roots. However, the effect might differ depending on variation in sprouting over the season and among species. Here, we studied the impact of different photoperiods and temperatures on sprouting capacity of root buds of Cirsium arvense and Sonchus arvensis in a climate chamber experiment. Two populations of each species, collected in northern and southern Sweden, were used. Plants were exposed to long (18 h), short (12 h) or decreasing (from 18 to 8 h) photoperiods in combinations with high (18 ⁄ 12C for 16 ⁄ 8 h), low (12 ⁄ 6C), decreasing (from 21 to 5C in 4 weeks) or constant high (16C) temperatures. Sprouting capacity was evaluated based on the proportion of sprouting buds from short root fragments. Neither temperature nor photoperiod affected root bud sprouting in C. arvense, while in S. arvensis, photoperiod seemed to regulate sprouting capacity. The proportion of sprouted buds decreased in short photoperiods, especially if combined with high temperature. In northern conditions, this suggests that weeding strategies based on fragmentation of the root system of S. arvensis will have low efficiency if the autumns are warm.Keywords
dormancy; perennial sow-thistle; creeping thistle; weed management; organic farming; endodormancyPublished in
Weed Research2012, volume: 52, number: 5, pages: 449-457
Publisher: WILEY-BLACKWELL
Authors' information
Liew, Josefine
Swedish University of Agricultural Sciences, Department of Crop Production Ecology
Swedish University of Agricultural Sciences, Department of Crop Production Ecology
Swedish University of Agricultural Sciences, Department of Crop Production Ecology
Swedish University of Agricultural Sciences, Department of Crop Production Ecology
Hakman, Inger
Swedish University of Agricultural Sciences, Department of Crop Production Ecology
UKÄ Subject classification
Agricultural Science
Publication Identifiers
DOI: https://doi.org/10.1111/j.1365-3180.2012.00936.x
URI (permanent link to this page)
https://res.slu.se/id/publ/39846