Action

Apply insecticide to protect seedlings from invertebrates

How is the evidence assessed?
  • Effectiveness
    70%
  • Certainty
    13%
  • Harms
    0%

Source countries

Key messages

  • One randomized, replicated, controlled study in the USA found that applying insecticide increased tree seedling emergence and survival.

 

 

 

About key messages

Key messages provide a descriptive index to studies we have found that test this intervention.

Studies are not directly comparable or of equal value. When making decisions based on this evidence, you should consider factors such as study size, study design, reported metrics and relevance of the study to your situation, rather than simply counting the number of studies that support a particular interpretation.

Supporting evidence from individual studies

  1. A randomized, replicated, controlled study in 1989–1990 in a former arable field, in New Jersey, USA (Facelli 1994) found that using insecticides increased the number of emerging tree of heaven Ailanthus altissima seedlings and seedling survival. Plots treated with insecticide had greater seedling emergence (approx. 13 seedlings/plot) than untreated plots (approx. 9 seedlings/plot). Additionally, seedling mortality was lower in plots treated with insecticide (approx. 3 %) than in untreated plots (approx. 7%). Sixteen plots (0.8 × 1 m) were treated with Carbaril dust 5%, dosed at 5 g active ingredient/m2. The other 16 plots were not treated with insecticide. In all plots, 20 seeds had been planted to ensure sufficient regeneration.

    Study and other actions tested
Please cite as:

Agra H., Schowanek S., Carmel Y., Smith R.K. & Ne’eman G. (2019) Forest Conservation. Pages 331-347 in: W.J. Sutherland, L.V. Dicks, N. Ockendon, S.O. Petrovan & R.K. Smith (eds) What Works in Conservation 2019. Open Book Publishers, Cambridge, UK.

 

Where has this evidence come from?

List of journals searched by synopsis

All the journals searched for all synopses

Forest Conservation

This Action forms part of the Action Synopsis:

Forest Conservation
Forest Conservation

Forest Conservation - Published 2016

Forest synopsis

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, terrestrial mammals, forests, peatland and control of freshwater invasive species. More are in progress.

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