Anna Zacaruk
September 30, 2017
I found a few interesting scientific papers on the subject of light competition in plants, with one of the most interesting being “The importance of light quality in crop-weed competition” by Lui JG et al. The paper discusses the notion that plant competition is thought to be driven by limiting resources such as light, which may disrupt physiological processes. The authors believe that changes in light resources may initiate a “shade avoidance response” in plants where they constrain their own development and reduce their own reproductive fitness in attempt to avoid growing in shaded areas and compete with other plants for light.
Another paper I found was called “Weed community characteristics and crop performance: a neighbourhood approach” by Pollnac FW et al. This paper discusses the possibility that the presence of weeds in crop fields causes crop yield reductions. The hypothesis tested was that increased weed species richness would decrease the effects of competition on spring wheat target plant performance. The authors ended up finding that species richness had no significant direct effect on spring wheat biomass, yield, or relative growth rate and that there were no significant neighbour species interaction terms. However, they did find that increasing weed species richness had a negative impact on the growth of individual weed species.
Both papers I’ve chosen are academic papers written by Lui JG et al., and Pollnac TW et al. respectively. The two papers are both apart of the “WEED RESEARCH” Journal, which is “An International Journal of Weed Biology Ecology and Vegetation Management.” Both reports contain in text citations, multiple tables, results sections, bibliography and authors. Each paper is based off of experiments and testing performed by the authors, and each has detailed results sections. Considering this is an internationally published academic journal, and both papers are Peer-Reviewed, I would consider these both Academic, Peer-Reviewed Research papers.
Liu, J.G., K.J. Mahoney, P.H. Sikkema, and C.J. Swanton. 2008. The importance of light quality in crop-weed competition. Weed Research 49: 217-224.
Pollnac, F.W., B.D. Maxwell, and F.D. Menalled. 2008. Weed community characteristics and crop performance: a neighbourhood approach. Weed Research 49: 242-250.