The influence of chelated forms of copper and iron fertilizers on the productivity of potato varieties
Abstract
Background. For the first time in the southern part of the forest-steppe of the Non-Chernozem Zone on podzolized chernozems, regulations have been developed for the application of chelated forms of micronutrients as foliar fertilizers. The research was conducted on varieties from the medium-early (Gala) and medium (Sante) maturity groups of potatoes. These groups are the most common in the region and occupy the largest areas of commercial plantings.
Purpose. To determine the effect of foliar applications of copper and iron chelates on the elements of potato productivity structure, marketable yield, and quality indicators of different maturity group varieties.
Materials and methods. A two-factor field experiment using a randomized block design was carried out to assess the effectiveness of chelate-based microfertilizers in the cultivation technology of Gala and Sante potato varieties. Standard methods were used to determine crop structure parameters, starch content, and crude protein levels in tubers. Analysis of variance for the impact of experimental variants on crop structure elements was performed using the AgroR and ExpDes packages in the R programming language with fixed effects of the randomized block plan
Results. The study found that chelated forms of copper and iron positively affect the yield structure of Sante and Gala potato varieties. Application of copper chelates to the Sante variety increased the number of tubers by 12% in 2023 and by 20% in 2024, while also increasing the average weight per tuber and total mass of tubers per plant. The influence of iron chelates was less pronounced, but in 2024 it led to a 16% increase in the number of tubers. For the Gala variety, the greatest increase in the number of tubers was achieved in 2024 due to the use of micronutrients. Increased yields resulting from the use of micronutrients were accompanied by a decrease in starch content in tubers and an increase in crude protein content.
Conclusion. The results highlight the importance of considering the interaction between these micronutrients, varietal characteristics, and growing conditions to improve potato yields in the southern forest-steppe zone.
EDN: TNCCEA
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