The impact of changes in agro-climatic resources on pea yield in the new climatic period of 1991–2020 in the Kirov region

The study is devoted to assessing the current state of agro-climatic resources and their impact on pea yield in Falenki district of the Kirov region. We used data from the Falenki Meteorological Station for 1991–2020. (in comparison with the base period of 1961–1990) and the results of the competitive variety testing of 7 cultivars of peas at the Falenki Breeding Station, a branch of the for 2011–2020. In the period of 1991–2020, a steady increase in air temperature was detected at a rate of 0.44 °C/10 years, while moisture availability remained at the same level. The pea cultivars ‘Krasnoufimsky 93’, ‘Ryabchik’, ‘Severyanin’, ‘Falensky usatii’, ‘Vita’, ‘Falensky Yubileyny’, ‘Vyatich’, which were the objects of the study, were distinguished by a wide yield dispersion and high coefficients of its variation (36.3–55.0 %). As a result of clustering, the cultivars were divided into three groups according to the yield, one of which was a single feed cultivar ‘Vyatich’, the other was a pair of valuable and related cultivars ‘Falensky Usatii’ and ‘Falensky Jubilee’, the third united all other cultivars. Correlation analysis indicated an average negative relationship between yield and air temperature in summer (-0.402...-0.560) and a positive effect of precipitation and increased humidification (0.455...0.669). Significant regression dependences of crop yields on air temperature in July were obtained, which determined 39.4–54.0 % of the productivity variance. According to the results of a two-factor analysis of variance, both weather conditions (76.1 %) and varietal characteristics (6.3 %) had a significant impact on pea yields.

1. Zhuchenko A. A. Ecological and genetic foundations of adaptive plant breeding system. Sel'skokhozyaystvennaya biologiya = Agricultural Biology. 2000;25(3):3–29. (In Russ.).

2. Volkova L. V., Lisitsyn E. M., Amunova O. S. Role of genotype and weather conditions in the formation morphobiological and economically valuable traits of spring soft wheat. Tavricheskiy vestnik agrarnoy nauki = Taurida herald of the agrarian sciences. 2020;(3(23)):43–58. (In Russ.). DOI: https://doi.org/10.33952/2542-0720-2020-3-23-43-58

3. Lentochkin A. M., Babaytseva T. A. Global warming and change in the conditions of crop production practices in the Middle Cis-Urals. Agrarnaya nauka Evro-Severo-Vostoka = Agricultural Science Euro-North-East. 2021;22(6):826–834. (In Russ.). DOI: https://doi.org/10.30766/2072-9081.2021.22.6.826-834

4. Zotikov V. I., Vilyunov S. D. Present-day breeding of legumes and groat crops in Russia. Vavilovskiy zhurnal genetiki i selektsii = Vavilov Journal of Genetics and Breeding. 2021;25(4):381–387. (In Russ.). DOI: https://doi.org/10.18699/VJ21.041

5. Shchennikova I. N., Kokina L. P. Perspectives of barley breeding for the conditions of the Volgo-Vyatka region (analytical review). Agrarnaya nauka Evro-Severo-Vostoka = Agricultural Science Euro-North-East. 2021;22(1):21–31. (In Russ.). DOI: https://doi.org/10.30766/2072-9081.2021.22.1.21-31

6. Sirotenko O. D., Pavlova V. N. Methods for assessing the impact of climate change on agricultural productivity. Methods for assessing the effects of climate change on physical and biological systems. Moscow: Rosgidromet, 2012. pp. 165–189.

7. Ermakova L. N., Tolmacheva N. I., Bezmaternykh E. A. The evaluation of agro-climatic resources within the territory of Perm region. Geograficheskiy vestnik = Geographical Bulletin. 2010;(2(13)):52–58. (In Russ.). URL: https://elibrary.ru/item.asp?id=15569347

8. Frenkel' M. O., Perevedentsev Yu. P., Sokolov V. V. Climate monitoring of the Kirov region. Kazan': Kazanskiy universitet, 2012. 264 p.

9. Pislegina S. S., Chetvertnykh S. A. New variety of field peas Vyatich. Agropromyshlennye tekhnologii Tsentral'noy Rossii = Agro Central Russian Technologies. 2020;(4(18)):64–71. (In Russ.). DOI: https://doi.org/10.24888/2541-7835-2020-18-64-71.

10. Pavlova V. N., Karachenkova A. A. Assessment of changes in climate-based productivity of summer wheat in the main regions of its cultivation in Russia. Fundamental'naya i prikladnaya klimatologiya = Fundamental and Applied Climatology. 2020;4:68–87. (In Russ.). DOI: https://doi.org/10.21513/2410-8758-2020-4-68-87.

11. Shchennikova I. N. Influence of weather conditions on growth and development of barley plants in Kirov region. Agrarnaya nauka Evro-Severo-Vostoka = Agricultural Science Euro-North-East. 2014;(4(41)):9–12. (In Russ.). URL: https://elibrary.ru/item.asp?id=21699652

12. Bueckert R. A., Wagenhoffer S., Hnatowich G., Warkentin T. D. Effect of heat and precipitation on pea yield and reproductive performance in the field. Canadian Journal of Plant Science. 2015;95(4):629–639. DOI: https://doi.org/10.4141/cjps-2014-34.

13. Vavilova Z. I. New directions in pea breeding in the north-east of the European part of Russia. Soils and techniques for increasing the efficiency of their use. Kirov: Vyatskaya GSKhA, 2008. pp. 128–131.

14. Pislegina S. S., Chetvertnykh S. A. Influence of weather conditions on the duration of the growth season and yield of peas. Agrarnaya nauka Evro-Severo-Vostoka = Agricultural Science Euro-North-East. 2020;21(5):521–530. (In Russ.). DOI: https://doi.org/10.30766/2072-9081.2020.21.5.521-530.

15. Pavlova V. N., Karachenkova A. A. Changes in agroclimatic resources of grain-producing regions of Russia and grain productivity during the new reference period of 1991-2020. Meteorologiya i gidrologiya. 2023;(9):29–42. (In Russ.). DOI: https://doi.org/10.52002/0130-2906-2023-9-29-42.

16. Volkova L. V., Shchennikova I. N. Comparative evaluation of methods for calculating adaptive responses of cereals. Teoreticheskaya i prikladnaya ekologiya = Theoretical and Applied Ecology. 2020;(3):140–146. (In Russ.). DOI: https://doi.org/10.25750/1995-4301-2020-3-140-146.