Bulgarian Journal of Agricultural Science
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Nitrogen balance at the maize cultivation in Southern Bulgaria under anthropogenic loading
Tsetska Simeonova, Lyuba Nenova, Maya Benkova, Irena Atanassova
Abstract: The aim of the present study is to perform a “conditional” nitrogen balance at the maize cultivation and estimate its input and output rates. The influence of precipitation, irrigation and fertilizer application and N uptake by plant production and N output by lysimetric water are evaluated in this study. The tryal is carried out on a Fluvisol, near Plovdiv, in Southern Bulgaria, under the conditions of field experiment with irrigation maize over the period 2020. The experimental design includes three treatments with nitrogen and phosphorus application, N120P80, N160P120, N200P160 and control (N0P0), The field plots are equipped with modification of Ebermayer type of lysimeters, which collect water from 100 cm depth of soil profile. According to the data received, it was observed that compensation between the amounts of N input and output was achieved in two variants (N120, N160). The nitrogen balance, obtained on the long-term field experiments can be successfully used for optimizing the applied fertilizers under specific soil and environmental conditions.
Keywords: fertilizer application; lysimetric water; precipitation; uptake and output nitrogen
Citation: Simeonova, Ts., Nenova, L., Benkova, M. & Atanasova, I. (2023). Nitrogen balance at the maize cultivation in Southern Bulgaria under anthropogenic loading, Bulg. J. Agric. Sci., 29(6), 1049–1056.
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Date published: 2023-12-20
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