Abstract
The results of studying the influence of modern growth regulators during the pre-planting treatment of potato tubers on the yield, quality and safety of potatoes under conditions of cultivation on leached chernozems of the Russian Federation are presented. The research was carried out at the experimental site of the SCNIIGPSH VNC RAS in the foothill zone of the Russian Federation-Alania in the grass-field crop rotation. The soil of the experimental site is leached chernozem, with a slightly acidic reaction (pHsol. 5,8 – 6,0), characteristic of the foothill zone of the republic. The subject of the study is growth regulators: Epin – Extra and Zircon. The object of research is the potato varieties Nevsky and Farn. Pre–planting treatment of potato tubers with a growth regulator accelerates the appearance of potato seedlings for 2-3 days compared to the control. On the Farn variety, on average over three years, a significant increase in the number of stems per bush was noted when using Zircon by 0.3 – 0.6 pcs./bush for control and by 0.1 – 0.2 pcs./bush for the Epin – Extra experiment options. Zircon increases the increase in potato yield on the Farn variety by 5.7 t/ha or 22.9% compared with the control, and by 1.9 t/ha or 6.6% compared with the Epin – Extra experiment options. The Nevsky variety has the same trend: respectively – by 5.7 t/ha or 23.8%; 2.1 or 7.6%. They reduce the total weight loss of tubers by 0.6 – 1.3%, while reducing the development of morbidity of products during storage. On average, over three years, the natural loss of potato tubers was 0.6 – 0.7% for the Farn variety, 0.1 – 0.2% for the Nevsky variety, and 0.2 – 0.3% for morbidity, respectively. Growth regulators provided potato plantings in the foothill zone with improved resistance of potato plants to adverse environmental conditions, increased the yield of potato tubers to 27.5 – 30.5 t/ha in combination with a good starch content and a reduction in total loss during autumn – winter storage.
Published Version
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