Scientific Journal of KubSAU

In southern Kyrgyzstan, the growth and development of early potatoes has been studied, depending on nutrition background and the methods of growth stimulant Bereke GN, aiming to improve the yield and quality of potatoes. There were no scientific studies on growth stimulants impacts on potatoes, the productivity of early potatoes in southern Kyrgyzstan conducted. Field experiments were carried out on the experimental site of the Osh Technological University in the Kyrgyz Republic Osh region Aravan district Mangyt village in 2016-2018. In case of increasing the nutrition background, in terms of experiments on methods of using the growth stimulant Bereke GN in the phases of development of early potato plants, natural differences in variants were observed. Increased duration of interfacial periods is detected in increased power supply background. In all years of experiments in the variant complex application of growth stimulator, respectively increased nutrition backgrounds, green, thick and strong sprouts of 1.5-2.1mm length were formed. As well as complex use of growth stimulant contributed to accelerated emergence of sprouts. According to the results of our research, we have identified the dependence of plant preservation on harvesting from the application of fertilizers and the method of use of growth stimulant. Consequently, with the complex application of Bereke GN growth stimulant to early potato crops, there was an increase in the number of preserved plants for early potato harvesting by 0.7-1.6%, with seed tuber growth stimulant treatment by 0.3-0.6%, and with leaf spraying by 0.1-0.3%

This article presents the results of studies on the impact of the fertilizer application rate and the use of the growth stimulant called Bereke GN on photosynthetic activities of early potatoes in southern Kyrgyzstan. Due to the lack of scientific evidence on the integrated use of fertilizers and growth stimulants in conditions of southern Kyrgyzstan, we considered it necessary to clarify the methods and standards for the use of the Bereke GN growth stimulant in the production of early potatoes in lowland areas on typical gray soil. In southern Kyrgyzstan, similar research in early potato technology is being carried out for the first time. According to studies, the crops of early potatoes possessed high leaf surface, which were subjected to complex treatment of the Bereke GN growth stimulator, accordingly its value was in the flowering phase of 41.2- 48.2 thousand m2. When the nutrition increases, a more powerful assimilation surface is formed. The highest level was 48.2 thousand m2 per 1 ha under the complex treatment with growth stimulator. The formation of tuber mass on 1 bush with the complex use of the Bereke GN growth stimulant showed a high intensity. With an increased nutrition, the Berke GN Growth Stimulator Integrated Test Variant increased the tuber formation rate, respectively the value was 182 g/bush. According to studies over the years of the experiments, the amount of dry biomass crops increased naturally, depending on the application of fertilizers and the use of the growth Bereke GN stimulant