The difference between the rainfall and the evaporability for the “June - August” period and soybean yield under non-irrigation growing conditions
Keywords:
evaporability; rainfall; soybean; yieldAbstract
Data on the quantities of rainfall, and the evaporability and the difference between them for the „June – August” period during the last 22 years (1999 to 2020) for the region of the Soybean Experimental Station - Pavlikeni, was used in the study. The region is representative for Central Northern Bulgaria. Data on average yields by years of agro-technical field trials with different varieties, sowing times and inter-row distances as well as data on average yields from production fields of the same varieties harvested only from non-irrigated growing conditions was used in the study, too. Some relation of the soybean yields on the difference between quantities of the rainfall and the evaporability for the “June - August” period, have been identified.
References
Georgiev, G. (2002). Study on evapotranspiration and yield of soybean. In Eko-konferencija 2002, Novi Sad (Yugoslavia), 25-28 Sep 2002. Ekoloski pokret grada Novog Sada, pp. 75-80.
Georgiev, G. (2017). Analysis of the vegetation rainfall and its relation to soybean yield under non-irrigation growing conditions. Rastenievadni nauki/Bulgarian Journal of Crop Science, 54(4), 14-19 (Bg).
Hershkovich, E. L., Stefanov, I., Ganeva, B., Glavincheva, V., Dilkov, D., Banchev, I., Valcov, Y., Savov, Y., Kyuchukova, M. & Nikolov, N. (1982). Agro-climatic atlas of Bulgaria, NIMH, рр. 3-64.
Hershkovich, E. L. (1984). Agro-climatic resources of Bulgaria. Sofia, BAS, p. 82.
Ivanov, N. N. (1941). Izvestia USSR, Academy of Sciences. Ser. Geogr. Geophysics, p. 3 (Ru).
Leshchenko, А. К. (1978). Soybean crops. Kiev, pp. 126-128 (Ru).
Peev, B., Kuzmova, K., & Serafimov, P. (2000). Unfavorable climate changes in the Northern Bulgaria. Rastenievadni nauki, 37(8), 558-561 (Bg).
Sirakov, D. (1981). Statistical methods in meteorology, pp. 20-26.(Bg).
Slavov, N. & Georgiev, G. (1997). Agro-climatic regionalization of soya cultivation in Bulgaria, Plant Science, 5-6, 18-21.(Bg).
Slavov, N., & Georgiev, G. (2002). Estimation of moisture resources for warm-season agricultural crops production in Bulgaria. Journal of Mountain Agriculture on the Balkans, 5(5), 380-387.
Downloads
Published
Issue
Section
Categories
License
Copyright (c) 2021 Bulgarian Journal of Crop Science
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
