Research on Flower Thinning of Early-Ripening Peach and Nectarine with Urea
DOI:
https://doi.org/10.71318/apom.1992.46.3.186Abstract
With the purpose of regulating the crop load, several low biuret urea concentrations (4, 8, 12% and 12, 16 and 20%) in two following years were sprayed during full bloom on ‘Armking’ and ‘Springred’ nectarines and ‘Springcrest’ peach. One month after the treatment a complementary hand thinning was carried out in order to adjust the fruit load. The degree of thinning was floral-stage-dependent and the best results were obtained at 12% dosage. Trees sprayed with concentrations higher than 12% showed toxic symptoms whereas those treated with solutions containing less than 12% of urea did not differ in crop load from the control plants.
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