Effects of apex removal and nutrient supplementation on branching and seed production in Thlaspi arvense (Brassicaceae)
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Authors: B. L. Benner
Date: 1988
Journal: American Journal of Botany
Volume: 75
Number: 5
Pages: 645-651
Summary of Methods: In this Indiana greenhouse study, Benner found that total seed weight per Thlaspi arvense plant was higher for early-removal plants than late removal, under all nutrient treatments, but intact controls produced the highest total weight of seeds in two of three nutrient treatments. Addition of nutrients increased the numbers of secondary branches, fruits, and seeds, and the average and total weight of seeds produced. Apex removal resulted in increased seed production only when it occurred early and when nutrients were added at the same time. Resource availability and plant phenology can be influenced in determining the effects of apical damage on seed production, and their effects, in combination, may differ from their individual effects.
Article Summary / Main Points: None
Vegetation Types:
MLRA Ecoregions:
Agrovoc Control Words: Riparian zones Rangelands Wildlife
Article Review Type: Refereed
Article Type: Experimental Research
Keywords: apex removal, herbivory, mineral nutrient addition, seed production, stinkweed, garlic weed, thlaspi arvense
Annotation: Individual plants received no, early, or late apex removal and no, early, or late nutrient addition in a two-way factorial experiment. Grazing intensity is not specified. Season of use is not specified.
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