Competitive Effects of Neighbors: A Study on Equivalence for Oat, Wheat, and Poppy
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Papaver rhoecs (poppy), Avena sativa (oat), and Triticum sativum (wheat) were used in a target-neighbor experiment approach in the greenhouse. Plant competition was measured by the slope of the regression of "target" weight as a function of "neighbor" weight. A single target individual (wheat or oat) was planted in increasing densities of neighbor plants (wheat, oat, or poppy). Equivalence of slope was used to measure comparative competitive effects of a neighbor species. Results showed very little significant effects for poppy as a neighbor, while oat and wheat had significant· similar effects to each other.