Emergence and Growth of Trumpetcreeper (Campsis radicans) as Affected by Rootstock Size and Planting Depth

Abstract

Trumpetcreeper, a deciduous, perennial vine found in the midwestern and southeastern United States, causes crop losses through direct competition and by crop entanglement, and control measures include both herbicides and tillage. The regenerative capacity of trumpetcreeper rootstocks of varying length and diameter when planted at different depths was evaluated in greenhouse experiments in Arkansas. Deeper placement of rootstocks delayed trumpetcreeper emergence but had no effect on shoot growth after emergence. Larger rootstock segments produced more shoots per plant and more total biomass production. However, smaller rootstock segments produced more shoots and total biomass per centimeter of rootstock. Overall, decreasing trumpetcreeper rootstock size will delay shoot emergence but may not result in increased long-term control.

Burial depth and diameter of the rhizome fragments affect the regenerative capacity of a clonal shrub

“…And compared with moderate sand burial depth (5 cm), the emergence and survival rates of the fragments (taking the average over all the different fragment sizes) at the deepest burial treatment (20 cm depth) decreased about 66.66% (77.33% vs. 10.67%) and 58.00% (64.00% vs. 6.00%), respectively. Some previous studies also found that deeper sand burial markedly decreased emergence and survival rates of rhizome fragments (Klimeš et al, 1993;Edwards and Oliver, 2004;Chen et al, 2010;Dong et al, 2011). One possible reason for these results is that clonal fragments' emergence was retarded by the physical barrier of deep burial, which depleted the reserves stored in plant organs and thus increased mortality (Yu et al, 2002(Yu et al, , 2004.…”

“…Number of ramets markedly increased with an increase in diameter of the rhizome fragments. Larger rootstock fragments produced more total biomass (Edwards and Oliver, 2004). Because larger fragments with more original stem nodes have a positive effect of number of ramets on growth of vegetative fragments has so far been found in the vegetative fragments of several (Lin et al, 2012).…”

Fragment Size and Planting Depth Affect the Regenerative Capacity of Bushkiller (Cayratia japonica)

“…Cultural control practices, including cultivation and tillage, have been observed to further the spread of bushkiller through regeneration from root fragments. However, past research examining the regenerative capacity of similar plant species from root fragments has been a useful predictor of its relative persistence and invasive potential, as well as elucidating potential control measures (Edwards and Oliver 2004;Hamdoun 1972;Raju et al 1964;Richardson 1975). Therefore, research was conducted to determine bushkiller regenerative capacity from various root fragment lengths when buried at increasing depths.…”

Native Weedy Pests of the Deep South

“…fields and forestry (Webster, 2001) and also can become a management issue in landscapes because it often is planted for ornamental purposes and quickly grows to unmanageable levels. Trumpet creeper roots extensively when the vine has soil contact, making handweeding difficult, as stem fragments left behind can form new shoots (Edwards and Oliver, 2004).…”