Tag Archives: growth conditions

xxx A.O. Markosyan, M.H. Zadayan, S.K. Baghdasaryan, S.Z. Kroyan, S.A. Markosyan and G.H. Gasparyan
Influence of fertilization on yield, nutritional and qualitative characteristics of potato tubers under different agro-climatic conditions in Armenia
Abstract |

Influence of fertilization on yield, nutritional and qualitative characteristics of potato tubers under different agro-climatic conditions in Armenia

A.O. Markosyan¹, M.H. Zadayan²*, S.K. Baghdasaryan¹, S.Z. Kroyan³, S.A. Markosyan⁴ and G.H. Gasparyan¹

¹Armenian National Agrarian University, Scientific Center of Soil Science, Agrochemistry and Melioration named after H. Petrosyan, 24 Admiral Isakov Ave, AM0004 Yerevan, Armenia
²Center for Agricultural Research and Certification, State Non-Commercial Organization of the Ministry of Economy of the Republic of Armenia, AM1139, v. Merdzavan, Armavir Marz, Yerevanyan highway 2nd deadlock, building 4, Armenia
³National University of Architecture and Construction of Armenia, Department of Engineering Geodesy, Teryan Str., 105, AM0009 Yerevan, Armenia
⁴Yerevan State University, Faculty of Biology, Department of Biology, 1 Alex Manoogian, AM0025 Yerevan, Armenia
*Correspondence: mhzadayan@gmail.com

Abstract:

This study investigates the effects of mineral (N150P120K120, ‘Control-Treatment 1’) and organo-mineral fertilization (with 20 t ha⁻¹ of farmyard manure (FYM), ‘Treatment 2’, and 40 t ha⁻¹ of FYM, ‘Treatment 3’) on the yield, nutritional value, and quality of potato (Solanum tuberosum L.) tubers under different agro-climatic conditions in Armenia. Field trials were conducted in two contrasting regions: Dasht village (Ararat Plain, 850 m a.s.l.) with cultivated irrigated meadow-fulvous soils, and Vahan village (Gegharkunik Highlands, 2000 m a.s.l.) with mountain black soils (chernozems). The research measured tuber yield, dry matter, starch, vitamin C, and protein content over three years (2019–2021).

Application of T3 (NPK + 40 t ha⁻¹ FYM) significantly improved all measured indicators. Yield increased by up to 28%, dry matter by 10.8%, starch by 12.0%, vitamin C by 13.4%, and protein content by 14.4%. Climate conditions also had a significant impact on tuber productivity and composition. In chernozems, compared to irrigated meadow-fulvous soils, yield increased by 15.1–21.6%, and the content of dry matter, starch, and vitamin C increased by 3.1–8.7%. However, protein content was higher in the irrigated meadow-fulvous soils by 3.4–5.2%.

These results demonstrate the importance of fertilization strategies tailored to specific agroecological zones and climatic trends, particularly in the context of climate change adaptation.

Key words:

, , , , , , , , ,