USE OF HYDROGEN CYANAMIDE IN DECIDUOUS FRUIT TREES IN CHILE

Applications of hydrogen cyanamide (H₂CN₂) on deciduous fruit trees in Chile in areas with chilling hours (≤7.2°C) between 400 and 1200 are very common and studied for advanced bud breaking, uniformed and concentrated flowering and for synchronized blooming of variety and pollinizer.

Treatments of 2.5% H₂CN₂ on pears (e.g. ‘Winter Nelis’) 40–50 days and on japanese plums, 30–40 days before expected bud breaking, advanced flowering of the pollination varieties.
On cherry varieties ‘Bing’ and ‘Van’ (1 000 to 1 200 chilling hours) at 2% H₂CN₂ 8 weeks before expected flowering, advanced collection 12 to 14 days.

1.5% of C₂HN₂ applied on four varieties of damask fruits concentrated harvest time and provided two collections compared with seven without application.
Peaches and nectarines have responded differently according to the applied dose, especially when chemical concentrations exceeded 0.5%.

International Symposium on Fruit Growing in Tropical Highlands

L. Sánchez

https://doi.org/10.17660/ActaHortic.1992.310.15