Efecto de la aplicacion de cianamida hidrogenada [Dormex] sobre 2 cultivares de frambueso rojo (Rubus idaeus L.).
1991
Hernandez N Claudio Fernando
The efficacy of a chemical product, hydrogen cyanamide (Dormex), was tested as an active agent able to compensate the cold time needed to promote an even bud sprouting in red raspberry plants (Rubus idaeus L.). The plant material corresponded to two non sprouting red raspberry cultivars: Meeker and Willamette, which were in their second green (year) of growth at trial time. Two trials were performed in the first one, cyanamide was applied at two different dates, August 21st and September 5th 1989, as Dormex, a trade brand, in two concentrations (0% and 4%), replicating each treatment 20 times. In the second experiment hidrogen cyanamide, under same concentrations as in the first trial, was applied on Meeker and Willamette cultivars at 0 and 4% of Dormex. The results from field observation and measurements, showed that in Meeker the first cyanamide application date compensated the lack of cold hours, thus resulting in greater bud sprouting; therefore, there wasn't either an increase in fruit production or in weight yield as compared to the control group. Concerning cyanamide application on September 5th, a phytotoxic effect produced necrosis and further bud death in most treated canes. This toxicity was limited, due to Dormex inability to translocate towards the plant root system. On the other hand, concerning Willamette cultivar, cyanamide did not produce any effect at all on its growth components.
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