The selection of plant growth regulators for the presowing treatment of domestic parsnip seeds (Pastinaca sativa L.) in the conditions of the Right Bank Forest-Steppe of Ukraine
2017
Хареба, В. (National University of Life and Environmental Sciences of Ukraine, Kyiv (Ukraine) | Комар, А.
The research deals with crop capacity and quality of roots of domestic parsnip (Pastinaca sativa L.)in relation to growth regulators (Emistim C, Biolan, Stimpo and Regoplant). The study was aimed to select effective plant growth stimulants for the presowing treatment of parsnip seeds in the conditions of the Right Bank Forest-Steppe of Ukraine. The research was conducted on the Stimul variety on the experimental field of the Department of Vegetable Growing, National University of Life and Environmental Sciences of Ukraine in 2015–2016. The fol-lowing methods were applied: field method – to study the influence of growing technology and weather conditions on the object of the research; biochemical method – to determine the quality of roots; statistical method – to verify the obtained data. It was determined that the highest crop capacity is assured by Emistim C (49.8 tons/hectare) and Regoplant (50.1 tons/hectare) growth regulators. Regoplant proved to be the most effective in terms of a complex of biochemical parameters. When Regoplant was used, the content of dry matter was 26.64 %, total sugar – 6.51 %, and vitamin C – 10.17 %. The application of plant growth regulators did not influence the accumulation of nitrates. The content of nitrates in roots did not exceed the maximum residue limits (MRL 250 mg/kg).
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