botanical · Leptinotarsa decemlineata · Solanum tuberosum (potato)

Effect of White Oak Extracts on Feeding by the Colorado Potato Beetle (Coleoptera: Chrysomelidae) · 1985

• positive
  White oak leaf and bark alcohol extracts inhibited Colorado potato beetle feeding on treated potato leaves.
• positive
  Bark extracts deterred Colorado potato beetle feeding more than young or old leaf extracts.

  compared with young leaves, old leaves

Dicofol as a Feeding Inhibitor of the Colorado Potato Beetle (Coleoptera: Chrysomelidae) · 1987

• positive
  The 35% WP formulation suppressed beetle feeding at 0.2 g (AI)/liter.

Feeding Inhibition and Mortality Effects of Neem-Seed Extract on the Colorado Potato Beetle (Coleoptera: Chrysomelidae) · 1988

• positive
  Neem extract at three concentrations inhibited adult and larval feeding on potato foliage.
• positive
  Neem sprays significantly reduced beetle larva and adult numbers in field plots.
• positive
  After 72 hours, 73% of larvae died on foliage treated with 1.2% neem extract.

cited by 3 papers here

Fitness reduction and mortality effects of neem‐based pesticides on the Colorado potato beetle Leptinotarsa decemlineata Say (Col., Chrysomelidae) · 1992

• positive
  Females fed neem treated potato leaves produced fewer egg masses.
• positive
  Neem oil treatment increased larval mortality in the laboratory.
• positive
  Neem products reduced beetle fecundity and vitality.
• positive
  Adults in the F1 progeny fell to 1 percent of the control group.

  compared with control group

• positive
  Neem products decreased Colorado potato beetle feeding.

cites 1 paper here

Toxicity of Neem Applied Alone and in Combinations with Bacillus thuringiensis to Colorado Potato Beetle (Coleoptera: Chrysomelidae) · 1999

• positive
  Neem and Bacillus thuringiensis had additive larval mortality in the susceptible strain.
• positive
  Neem and Bacillus thuringiensis had synergistic larval mortality in the resistant strain.
• positive
  Sublethal neem or Bacillus thuringiensis, alone or combined, reduced larval weight and growth in both strains.

Behavioural response of Colorado potato beetle ( Leptinotarsa decemlineata ) larvae to selected plant extracts · 2006

• positive
  At 200 g kg(-1), extracts of all tested species reduced beetle feeding.
• positive
  At 20 g kg(-1), extracts of Arctium, Bifora, Humulus and Xanthium left significantly more potato leaf tissue than untreated controls.

  compared with untreated control leaves

• no effect
  At 20 g kg(-1), Verbascum extract did not affect feeding.
• no effect
  At 2 g kg(-1), extracts did not affect leaf consumption in 24 hours.

cites 1 paper here

Alternative protection of potatoes in organic farming. · 2009

• positive
  Water extracts showed non-significant trends toward lower larval occurrence of Colorado potato beetle on potatoes.

  compared with control

• no effect
  Water extracts from Syringa vulgaris and Pyrethrum parthenium did not significantly decrease air attack by Colorado potato beetle relative to the control.

  compared with control

he antifeeding effect of Azadirachta indica A. Juss. extracts on Colorado Potato Beetle [Leptinotarsa decemlineata Say (Col.: Chrysomelidae)] · 2010

• positive
  Neem Azal T/S strongly reduced beetle feeding on potato leaf discs.

  compared with untreated (control) insects

Fecundity effects of some plant extracts in the Leptinotarsa decemlineata Say (Col.: Chrysomelidae) · 2010

• positive
  M. azedarach extracts reduced egg laying relative to control.

  compared with control

• positive
  Extract application decreased Leptinotarsa egg hatching ratio.
• positive
  Applied extracts reduced Leptinotarsa egg laying relative to controls.

  compared with control

EFFECT OF ESSENTIAL OIL OF SOME PLANTS ON FEEDING AND OVIPOSITION BEHAVIORS OF THE COLORADO POTATO BEETLE, LEPTINOTARSA DECEMLINEATA (SAY) (COL.: CHRYSOMELIDAE) · 2011

• positive
  A. sieberi oil at 500 ml/l produced among the lowest third-instar larval counts on potato leaves.

  compared with other treatments

• positive
  C. limonium oil at 500 ml/l gave the lowest mean relative growth rate of third-instar larvae on treated potato leaves.

Antifeedant activity and growth inhibition effects of some plant extracts against larvae of Colorado potato beetle [Leptinotarsa decemlineata Say (Col: Chyrsomelidae)] under laboratory conditions · 2015

• positive
  H. lupulus extract at 10 g/L gave the greatest antifeedant activity; consumed area was 0.68 cm2 after 72 h.

cited by 2 papers here

THE EFFECT OF WATER EXTRACT FROM WILD THYME ON COLORADO POTATO BEETLE FEEDING · 2016

• positive
  Fresh extract over 20% limited larval body weight gain.
• positive
  Dry extract over 5% limited larval feeding.

cites 1 paper herecited by 1 paper here

Repellent activity of Tanacetum parthenium (L.) and Tanacetum vulgare (L.) essential oils against Leptinotarsa decemlineata (Say) · 2020

• positive
  Higher oil concentrations shortened larval and adult choice time.
• positive
  T. parthenium oil was more effective against beetle larvae.

  compared with T. vulgare

• positive
  T. parthenium caused faster movement away than T. vulgare.

  compared with T. vulgare

cites 3 papers here

UHPLC-OrbiTrap MS Characterization of Phenolic Profiles in French Marigold Extracts and Analysis of Their Antifeedant Activity against Colorado Potato Beetle · 2022

• positive
  Fourth-instar Colorado potato beetle larvae fed potato leaves coated with flower methanol extract (10 mg/mL) had a significantly lower final body mass (157.67 mg) than controls (182.26 mg).

  compared with controls fed with non-treated leaves

cites 1 paper here

REPELLENT AND INSECTICIDAL EFFECTS OF ESSENTIAL OILS ON COLORADO POTATO BEETLE (LEPTINOTARSA DECEMLINEATA (SAY, 1824)) · 2025

• positive
  Star anise essential oil had the highest efficacy against adult Colorado potato beetles.
• positive
  Basil essential oil had the highest repellence to adult Colorado potato beetles.
• no effect
  The essential oils did not differ significantly in attractiveness or repellence to Colorado potato beetles.