Integrated weed management: effect of herbicide choice and timing of application on the survival of a biological control agent of the tropical wetland weed, Mimosa pigra

2003 ◽  
Vol 26 (2) ◽  
pp. 162-167 ◽  
Author(s):  
Quentin Paynter
Keyword(s):  
Biological Control ◽  
Weed Management ◽  
Biological Control Agent ◽  
Control Agent ◽  
Integrated Weed Management ◽  
Mimosa Pigra ◽  
Management Effect

Integrated Management of Scotch Broom (Cytisus scoparius) Using Biological Control

2012 ◽  
Vol 5 (1) ◽  
pp. 69-82 ◽  
Author(s):  
Angelica M. Herrera-Reddy ◽  
Raymond I. Carruthers ◽  
Nicholas J. Mills
Keyword(s):  
Biological Control ◽  
Seed Production ◽  
Seed Bank ◽  
Weed Management ◽  
Biological Control Agent ◽  
Integrated Management ◽  
Management Strategies ◽  
Integrated Weed Management ◽  
Scotch Broom ◽  
Mature Seeds

AbstractIntegrated weed management strategies (IWM) are being advocated and employed to control invasive plants species. In this study, we compared three management strategies (biological control alone [BC], BC with fire [BC + F], and BC with mowing [BC + M]) to determine if physical controls reduce seed production by Scotch broom and interfere with the action of the biological control agent—the Scotch broom seed weevil. We measured seed production and seed predation by the weevil at both pod and plant scale, and seed bank density over two field seasons. We found no difference in the number of seeds per pod among management strategies. However, combining management strategies (BC + M and BC + F) resulted in significant reductions in pods per plant, mature seeds per plant, and seed bank density relative to biological control alone. We did not find differences among management strategies in number of weevils per pod or proportion of seeds predated by the weevil at either pod or whole-plant scale. However, combining management strategies (BC + M and BC + F) resulted in a significant reduction in healthy mature seeds per plant relative to biological control alone. Although both integrated strategies outperformed biological control alone in reducing seed production and the seed bank, with no statistical difference between them, we propose that short-rotation prescribed fire could prove to be a more effective strategy for long-term management of Scotch broom due to its potential for slightly greater depletion of the seed bank.

Nesaecrepida infuscata: a biological control agent of the invasive plant Mimosa pigra

BioControl ◽  
2011 ◽  
Vol 57 (4) ◽  
pp. 573-580 ◽  
Author(s):  
Tim A. Heard ◽  
Areli Mira ◽  
Gio Fichera ◽  
Ricardo Segura
Keyword(s):  
Biological Control ◽  
Invasive Plant ◽  
Biological Control Agent ◽  
Control Agent ◽  
Mimosa Pigra
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