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.
Citations and enhanced abstracts for journals articles and documents focused on rangeland ecology and management. RSIS is a collaboration between Montana State University, University of Idaho, and University of Wyoming.