Acţiunea regulatorilor de creştere asupra rezistenței la temperaturile scăzute din perioada de înflorire, gradului de legare şi producţiei de fructe la cultura părului
| Main Authors: | Peşteanu Ananie, Mihov Dmitri, Ivanov Alexei |
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| Format: | Article Journal |
| Terbitan: |
, 2019
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/3590274 |
Daftar Isi:
- The experimental plot was placed in the orchard „Terra Vitis” Ltd. founded in 2010 year. The research was conducted during the period of 2017 year. The study subject of the experience was Vystavochnaya and Noyabrskaya pear varieties, grafted on BA 29. The trees were trained as slender spindle system. The distance of plantation is 4.0 x 2.0 m. The objective of the present study was to evaluate the resistance to low temperatures at flowering, the setting of reproductive organs, fruit production and its quality. The treatments were: 1. Control (without treatment); 2. Gibberellic acid GA3 - 20 ppm (18.04.2017); 3. Gibberellic acid GA4+7 - 40 ppm (18.04.2017); 4. Gibberellic acid GA4+7 - 40 ppm (26.04.2017); 5. Prohexadione-Ca - 10 ppm + Gibberellic acid GA4+7 - 40 ppm (26.04.2017). During the research the degree of fruit setting, average fruit weight, orchard production and fruit quality were studied. It was established that the gibberellic acid GA3 in dose of 20 ppm can be used when 30-60% of the flowers are open to increase the resistance of the reproductive organs at low temperatures, for improving the physiological processes in the plant, for increasing the degree of fruit setting, the amount of fruits in the crown of pear trees and their production.