Pear resistance to psilla (Cacopsylla pyri L.): A review

Nin, Stefania; Ferri, Alessio; Sacchetti, Patrizia; Giordani, Edgardo

doi:10.13128/ahs-12739

Cited by 4 publications

(4 citation statements)

References 77 publications

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“…It has a large number of nymphal stages and a large number of generations per year (four to five). The results therefore are a reduced fruit tree "vigor" and a yield decrease (Nin et al, 2012). Indirect damages occur due to a reduced intensity of photosynthesis caused by the present population of sooty molds (Almaši et al, 2004;Nin et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…The results therefore are a reduced fruit tree "vigor" and a yield decrease (Nin et al, 2012). Indirect damages occur due to a reduced intensity of photosynthesis caused by the present population of sooty molds (Almaši et al, 2004;Nin et al, 2012). Pear psylla is a vector of phytoplasma-the causative agent of pear decline (Carraro et al, 1998;Horton, 1999;Sule et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Untitled

2022

poljoprivreda

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Original scientific paperIzvorni znanstveni rad SUMMARY Cacopsylla pyri L. (Hemiptera: Psyllidae) is one of the most serious economic pear pests in Eastern Croatia. Previous methods of pear control in the Republic of Croatia have led to the development of an insect population resistan to certain active ingredients. The objectives of this two-year study were to determine the optimal number of treatments for psylla control based on the monitoring of pest life cycle and to determine the effectiveness of processed kaolin in controlling the pear psylla in comparison with other chemical insecticides in four different treatments (T1. IPM-integrated protection program -diflubenzuron, spirotetramat, abamectin, acetamprid; T2. acrinatrin + abamectin, T3. kaolin clay, T4. control treatment). The research was conducted in 2017 and 2018 in a six-year-old experimental pear orchard on three varieties (Williams, Conference, and Abate Fetel). Monitoring of the pest population and its development was performed by visual inspection on two one-year shoots per tree of each variety in all replicates. The T1 treatment demonstrated the highest efficiency, between 84-95%, depending on the year, while the kaolin treatment had the lowest one, but it varied greatly from one year to the other (37-71%).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Untitled

2022

poljoprivreda

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“…The search for new sustainable insecticides to control psyllids has been instigated by these regulatory developments. Further incentives for the search arise from the fact that pear breeding has not yet been able to release Psylla-resistant cultivars [ 4 , 5 ], and sexual pheromones-based strategies have not been developed for this pest [ 6 ]. Furthermore, pear cultivation in Italy has undergone a significant decline in terms of production due to a series of biotic stresses that have brought down this important agricultural sector in northern Italy, the worst of these being the invasion of Halyomorpha halys and the spread of brown spot, and Stemphylium vesicarium .…”

Section: Introductionmentioning

confidence: 99%

Efficacy and Selectivity of Potassium Bicarbonate Salts against Cacopsylla pyri on Pears

Civolani

Mauro²,

Radicetti

et al. 2023

Insects

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In recent years, the control of pear psyllid in northern Italy has not been particularly problematic, due to the presence of two insecticides (abamectin and spirotetramat) specifically for this pest, and due to the adoption of integrated pest management. However, the withdrawal of these two specific insecticides is imminent and, therefore, it has become necessary to find alternative control tools. More recently, potassium bicarbonate, known for its fungistatic activity against many phytopathogenic fungi, has also shown some activity against some insect pests. In the present study, the efficacy and possible phytotoxicity of potassium bicarbonate were tested in two field trials on second generation Cacopsylla pyri by spraying two different salt concentrations (5 and 7 kg ha−1), with or without polyethylene glycol as an adjuvant. Spirotetramat was used as a commercial reference. The results showed that potassium bicarbonate could positively control the number of juvenile forms (with a mortality percentage of up to 89% at the infestation peak), even though spirotetramat was still more effective. Therefore, potassium bicarbonate appears to be a sustainable integrated tool for psyllid control, especially in the wake of the imminent withdrawal of spirotetramat and other insecticides currently used on this pest.

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Section: Introductionmentioning

confidence: 99%

Komparativni učinak različitih insekticida i kaolina na smanjenu brojnost populacije Cacopsylla pyri L.

Tomaš

Mihaljević

Vuković

et al. 2022

Poljoprivreda (Online)

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Cacopsylla pyri L. (Hemiptera: Psyllidae) is one of the most serious economic pear pests in Eastern Croatia. Previous methods of pear control in the Republic of Croatia have led to the development of an insect population resistant to certain active ingredients. The objectives of this two-year study were to determine the optimal number of treatments for psylla control based on the monitoring of pest life cycle and to determine the effectiveness of processed kaolin in controlling the pear psylla in comparison with other chemical insecticides in four different treatments (T1. IPM-integrated protection program – diflubenzuron, spirotetramat, abamectin, acetamprid; T2. acrinatrin + abamectin, T3. kaolin clay, T4. control treatment). The research was conducted in 2017 and 2018 in a six-year-old experimental pear orchard on three varieties (Williams, Conference, and Abate Fetel). Monitoring of the pest population and its development was performed by visual inspection on two one-year shoots per tree of each variety in all replicates. The T1 treatment demonstrated the highest efficiency, between 84-95%, depending on the year, while the kaolin treatment had the lowest one, but it varied greatly from one year to the other (37-71%).

show abstract

Pear resistance to psilla (Cacopsylla pyri L.): A review

Cited by 4 publications

References 77 publications

Untitled

Untitled

Efficacy and Selectivity of Potassium Bicarbonate Salts against Cacopsylla pyri on Pears

Komparativni učinak različitih insekticida i kaolina na smanjenu brojnost populacije Cacopsylla pyri L.

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