As the first intervention of the season against San José Scale (Diaspidiotus perniciosus) in cherry orchards, it is necessary to carry out a preventive treatment, as eradicating this pest from orchards is very difficult and may take several seasons.
One of the many consequences of climate change is the variation in the timing of appearance, migrations, and intensity of attacks of various pests.
In the specific case of San José Scale, it is necessary to act early in the season with the aim of inhibiting the metamorphosis of the juvenile stages and the subsequent emergence of adults, thus achieving timely control and preventing the pest’s proliferation.
It is recommended to apply the treatment between July 25 and, at the latest, August 10.
The treatment must be carried out with a high spray volume, as this scale insect shelters in the wood: coverage must therefore be complete and uniform across the entire plant.
The application should be made on dry wood and with a rain-free period of at least 24 hours, since the control is mainly by contact.
Ensure that the product coverage is excellent and even throughout the tree; the product must have good contact with the wood, where the insect hides.
In orchards with high pest pressure, it is recommended to go over the upper third of the canopy with a lance (pitón), where the highest infestation is generally concentrated.
San José Scale (Diaspidiotus perniciosus)
Opening image credit: John A. Davidson, University Maryland
Patricio Morales
AgroAsesoria (Cile)
06 Sep 2024
Depending on the severity of the deficiency, these nutrient deficiencies can reduce yield and fruit size. Severe deficiency can lead to the drying of shoots and even the death of the tree. Visual deficiency symptoms are similar for iron, zinc, and manganese.
08 Jul 2025
An innovative study in Campania used HRMAS-NMR spectroscopy to analyze three varieties of Bracigliano PGI cherries, identifying their chemical, nutraceutical, and compositional qualities. The results highlight the value of this traditional Italian product.
26 Feb 2026
From 3D LiDAR flower quantification to price elasticity and retail margins in Washington, California and Canada, this analysis explores how pollinators, seasonal supply constraints and in-store strategies shape cherry volumes, pricing dynamics and long-term market value.
26 Feb 2026
In Chile, integrating biodiversity and natural habitats into apple and cherry orchards increases fruit set, size and long-term stability. Research by PUCV shows that native vegetation and wild pollinators improve yield and quality without expanding cultivated land.
