abbreviatus adults seemed to lay fewer egg clusters and live a shorter lifespan on pond apple than on mahogany in the present study or on green buttonwood or Surinam cherry in the previous study (Martin 2009), although there were no statistical comparisons among plant species.
Survival of Diaprepes abbreviatus (Coleoptera: Curculionidae) larvae on green buttonwood trees in flooded marl soil and potting medium.
Leaf gas exchange and growth responses of green buttonwood and Swingle citrumelo to Diaprepes abbreviatus (Coleoptera: Curculionidae) larval feeding and flooding.
The experiment was conducted in fall 2008 in Homestead, Florida with green buttonwood and Swingle citrumelo plants in 11-liter plastic containers placed on ground cloth at an outdoor site exposed to full sun.
Green buttonwood and Swingle citrumelo trees (obtained from a commercial nursery) were approximately 2 yrs old and 1 yr old, respectively when treatments were initiated.
Leaf dry weight included leaf blades and petioles for green buttonwood plants and leaflets, petiolules, and petioles for Swingle citrumelo plants.
Soil redox potential for green buttonwood during the first, second and final flood periods ranged from +193 mV to +162 mV, +597 mV to +166 mV and +508 mV to +153 mV, respectively.
However, there were no significant differences between infested and non-infested green buttonwood plants for A or [g.
There were no significant effects of flooding or larval infestation on stem diameter or plant height for either green buttonwood or Swingle citrumelo (data not shown).
For green buttonwood, there were no significant effects of flooding on percent larval survival or head capsule width of recovered larvae (Table 2).
In addition, for both plant species, during all 3 flood cycles (except for green buttonwood flood cycle 1), the highest redox potential occurred on day 1 (when flooded) and the lowest was on day 3 (when drained).
The duration of flooding and larval infestation periods in the present study were relatively short compared to previous studies, such as by Diaz (2005), where green buttonwood was exposed to 21-36 d of flooding followed by 90 d infestation.
Based on leaf gas exchange and plant growth in the present study, green buttonwood was more susceptible to flooding than Swingle citrumelo.
abbreviatus larval survival rates on green buttonwood in flooded marl soil than in non-flooded marl soil and in flooded potting medium than in non-flooded potting medium.
abbreviatus has been shown to reduce leaf gas exchange and growth in several woody ornamental plant species including green buttonwood (Diaz 2005; Diaz et al.