Abstract
The dynamics of nitrogen fixation, emissions of N2O and CO2 in pea agrocoenoses under the influence of different fertilization systems and pre-sowing seeds inoculation with microbial preparation Rhizohumin were studied in stationary field experiment on leached black soil (short crop rotation potatoes – spring barley – peas – winter wheat). It was observed that symbiotic nitrogen fixation process had become active on the second year aftereffect of 40 t/ha of cattle manure, green manure and use of low (N30P30K30) and medium (N60P60K60) doses of mineral fertilizers. Rhizohumin had significantly increase nitrogen fixation activity in all variants except of the one with manure. Increase of N2O emissions had corresponded to the increasing doses of mineral fertilizers. The use of biological preparation had ensured the reduction of gaseous nitrogen losses due to the initiation of plants development. Carbon dioxide emission values had depended on the type and dose of fertilizers. Rhizohumin had reduced the emission of gaseous carbon compounds in variants with different fertilizer backgrounds due to its extensive use in the formation of additional yield.
Highlights
Prerequisites to take into the account the activity of different biological processes in soils of agrocenoses is dictated by modern concepts of the impact of technological factors on the production process of agricultural crops, and on the environment
The dynamics of nitrogen fixation, emissions of N2O and CO2 in pea agrocoenoses under the influence of different fertilization systems and pre-sowing seeds inoculation with microbial preparation Rhizohumin were studied in stationary field experiment on leached black soil
It was observed that symbiotic nitrogen fixation process had become active on the second year aftereffect of 40 t/ha of cattle manure, green manure and use of low (N30P30K30) and medium (N60P60K60) doses of mineral fertilizers
Summary
Determination of the dynamics of nitrogen fixation activity demonstrates the significant stimulation of process during the budding phase in variants with low and medium doses of fertilizers with pre-sowing seed bacterization with Rhizohumin (Fig. 1). Green manure had a positive effect on the activity of symbiotic nitrogen fixation, starting from the flowering stage of pea plants in both varinats with ad without pre-sowing seeds inoculation with Rhizohumin. Determination of the emission of nitrous oxide characteristics in the dynamic indicates a significant loss of gaseous nitrogen in the variants with the second year aftereffect of manure and variants with the second year aftereffect of manure + N30P30K30 (Fig. 2) Rhizohumin in these variants has almost no effect on the process. Application of Rhizohumin had reduced the total losses in the variant without the fertilizers, with fertilization and green manure background
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
