At the heart of the 10th International Cherry Symposium held in Washington, Chilean agronomist Marlene Ayala highlighted Chile’s pioneering role in research on plastic covers and foliar nutrition in cherry trees. A strong signal of the country's scientific weight on the global fruit scene.
Marlene Ayala, professor at the Pontificia Universidad Católica de Chile, was a keynote speaker at the international symposium dedicated to cherries, held in the United States. Her presentation covered both agronomic innovations and strategic vision: from the role of plastic covers in tackling climate challenges to advanced studies on calcium absorption in leaves and fruits.
“Our industry experienced a decisive acceleration starting in 2000, and today we are among the world leaders,” Ayala said in an interview with Portalfruticola.com. “We stopped importing technology and started generating it ourselves: we face unique challenges that push us to innovate with solutions tailored to our territory.”
In her speech, Ayala presented Chile’s developments in the use of plastic covers for cherry orchards. This technology not only protects plants from extreme weather events but also allows for earlier harvests and optimizes the commercial window.
“Our under-cover production system is the result of years of adaptation: we have developed a technological package tailored to our environment, our varieties, and market needs,” she explained.
According to the expert, Chile is now at the forefront of adopting and managing these structures compared to countries like Australia, New Zealand, South Africa, Argentina, Spain, and Italy. However, there is still room for growth. “We are already ahead, but in five years we could have a fully optimized under-cover production system.”
Currently, research teams are investigating innovative materials, automation systems, fruit quality, plant physiology, mineral nutrition, and postharvest, aiming to further refine techniques.
The second focus of the presentation was cherry tree nutrition, particularly calcium application through foliar treatments. Using stable isotopes, Ayala and her team were able to accurately determine whether and how calcium is absorbed by the plant.
“Our studies show that leaves absorb calcium more efficiently than fruits, but both organs start absorbing it early in the season. This confirms the importance of early and targeted applications,” she emphasized.
This evidence, the result of years of field trials across various Chilean production areas and with different varieties, represents a unique contribution to the international scientific landscape, which often lacks data on these practices.
For Ayala, taking part in an international symposium is also an opportunity to increase the visibility of Chilean research. “We are internationally recognized—in China, Europe, and North America. But it’s also important to be acknowledged at home,” she stressed.
A critical issue remains the funding of research. “Unfortunately, it is still difficult to obtain funding for applied research projects in Chile. Abroad, like in the United States, public funds and contributions from producers themselves support the continuous development of the sector.”
A virtuous model that, according to the researcher, could be replicated to further strengthen Chile’s leadership in the cherry industry.
Text and image source: portalfruticola.com
17 Oct 2025
Chile's 2025/26 cherry season starts with a surprise: Colchagua beats Ovalle with AG2, harvested on October 13. 3J and 4J-sized cherries are already on their way to China. Meanwhile, the north kicks off its harvest with Brooks and Nimba, determined not to fall behind.
08 Apr 2025
X-disease is threatening Oregon’s cherry orchards, reducing fruit quality and profits. OSU Extension supports growers through research, bilingual education, and preventive strategies to safeguard cherry crops and protect the region’s agricultural economy.
18 Nov 2025
New Zealand’s cherry season is recovering quickly after October’s cold snap. The return of warm weather has boosted growth and pollination, bringing orchards back on schedule and giving growers renewed confidence ahead of the upcoming harvest period.
18 Nov 2025
Gibberellic acid (GA₃) is a key plant hormone to enhance cherry size. When applied during the veraison stage, it improves yield and fruit quality. Learn more about optimal doses, agronomic benefits, and guidance for Chilean cultivars prone to stress and cracking.
