Claim · model-written summary
Psylla produces three generations per year.
- Taxon
- pear
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communist0 - Outcome
- generations per yeare3
- Value
- threee3
PsyllaNot reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
t0“pear orchards”
t1“psylla species”
e3“produce three generations per year”
Title
Leontina I. SIMIONCA MĂRCĂȘAN; Ionuţ B. HULUJAN; Teodora FLORIAN; et al. Notulae Botanicae Horti Agrobotanici Cluj-Napoca 2022. doi:10.15835/nbha50313022
Other claims from this paper (18)
- Observation Two psylla species were identified in the pear orchard: C. pyri and C. pyricola.
- Observation C. pyri dominated the psylla population with 77.8-80.1% of individuals.
- Observation Psylla adults emerge from hibernation in the first part of March.
- Observation First-generation psylla adults emerge in the first decade of June.
- Observation Second-generation psylla adults emerge in the last decade of July.
- Observation Third-generation psylla adults emerge in the first decade of September as they enter hibernation.
- Observation First-generation psylla larvae appear in the second half of April.
- Observation Second-generation psylla larvae appear from the end of June to the beginning of July.
- Observation Third-generation psylla larvae appear in the second decade of August.
- Observation Up to 11 psylla adults were reported per leaf.
- Observation Up to 27 psylla larvae were reported per leaf.
- Observation Up to 9 psylla larvae were reported per petiole.
- Observation Up to 14 psylla larvae were reported per fruit.
- Association More psylla adults were captured on yellow sticky traps on the southern side of the tree crown than on the northern side.
- Observation The pear cultivar Williams was heavily affected after the intense psylla attack.
- Observation Pear trees were badly defoliated, blackened and aged prematurely after the attack.
- Association Climatic conditions of the two years did not influence psylla phenology.
- Recommendation Monitoring psyllids is key to integrated protection programs in pear orchards.