Year 2023, Volume 8, Issue 1
| Year : | 2023 |
| Volume : | 8 |
| Issue : | 1 |
| Authors : | Maya BENKOVA, Tsetska SIMEONOVA, Lyuba NENOVA, Milena HARIZANOVA, Irena ATANASSOVA |
| Title : | RESPONSE OF SOIL CHEMICAL PROPERTIES TO BIOCHAR AND NITROGEN APPLICATION IN A FIELD EXPERIMENT |
| Abstract : | A two-year field experiment was carried out with maize (Zea mays L.) at two biochar (BC) doses of (5 and 10 t. ha-1) and two nitrogen fertilizer rates (130 and 260 kg. ha-1) in Tsalapitsa village (Plovdiv) on Alluvial-meadow soil (Fluvisol). The aim of the study was to find out the influence of biochar as an aftereffect, as well as nitrogen fertilization on soil physicochemical and agrochemical properties. In order to observe the effect of biochar in the second year, the variants from the first year (B(1)5N130, B(1)10N130, B(1)5N260 and B(1)10N260, without the controls K1N130 and K2N260 were left without the addition of biochar, and for the second year, new variants were set up according to the same scheme. During the vegetation of maize, the influence of biochar as the aftereffect was observed with increase in pH values (0.2 - 0.3 units) in comparison with the control variants (without biochar, nitrogen fertilization only), which was confirmed by its application in the second year. There were positive changes in the mineral N content of the studied treatments as the aftereffect, compared to the controls and the second-year treatments, which may be related to the ability of the biochar to fix nitrogen and protect it from leaching, especially on vulnerable soils such as the Fluvisol studied. A slight increase in organic carbon (0.09-0.32 %) was also found at the lower N rate (130 kg. ha-1) in the aftereffect variants. In these variants, a slight increase in cation exchange capacity, exchangeable Ca and the degree of base saturation was also observed. Biochar utilization had little effect on the investigated properties of the Fluvisol. Applying the lower doses of biochar in longer term would have a more significant impact. |
| For citation : | Benkova, M., Simeonova, T., Nenova, L., Harizanova, M., Atanassova, I. (2023). Response of soil chemical properties to biochar and nitrogen application in a field experiment. AGROFOR International Journal, Volume 8. Issue No. 1 pp. 85-94. DOI: 10.7251/AGRENG2301085B |
| Keywords : | pH, cation exchange capacity, organic carbon, soil mineral nitrogen, second year. |
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ISSN 2490-3434 (Printed)
ISSN 2490-3442 (Online)
ISSN 2490-3442 (Online)
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