ALSERepository of Iași University of Life Sciences, ROMANIA

Enzyme activity involved in n and p cycles, of soybean plant rhizosphere soil, roots and leaves

Show simple item record

dc.contributor.author Daraban, Oxana
dc.contributor.author Bizgan, Iana
dc.contributor.author Emnova, Ecaterina
dc.contributor.author Toma, Simion
dc.date.accessioned 2022-01-13T06:14:56Z
dc.date.available 2022-01-13T06:14:56Z
dc.date.issued 2014
dc.identifier.citation Daraban, Oxana, Iana Bizgan, Ecaterina Emnova, Simion Toma. 2014. "Enzyme activity involved in n and p cycles, of soybean plant rhizosphere soil, roots and leaves". Lucrări Ştiinţifice USAMV - Iaşi Seria Agronomie 57(2): 179-182.
dc.identifier.uri https://repository.uaiasi.ro/xmlui/handle/20.500.12811/2066
dc.description.abstract The research aim was to evaluate the influence of exogenous nitrogen sources on key-enzyme activity involved in nitrogen (urease) and phosphorus (phosphatase) metabolism in the rhizosphere soil, roots and leaves of soybean plants at bud-flowering stage. The field experiment was designed on 4 plots (12 m 2 , 60 plants/ m 2 ): two fertilization treatments x four replicates. The soil was fertilized in starting rates with mineral forms of N and P (N20P60): KH2PO4; NH4NO3 (ammonium nitrate) and (NH2)2CO (urea). Urease and phosphatase activity (acid, alkaline and total) were determined in the studied material. Application of additional sources of mobile nitrogen (N) led to changes of enzymatic activities determined in the rhizosphere soil and soybean plant organs. Urease activity showed an increase in soil treated with urea, which probably served as a substrate for increased ammoniacal nitrogen amount and uptake, respectively. The increasing of the phosphatase activity in the rhizosphere soil and roots, in the treatment with ammonium nitrate as soil fertilizer, showed an intensification of the phosphorus mobilization. The obtained data indicated that there was an increased need in phosphorus assimilation for plants, in this treatment. Phosphatase activity (acid and total) in leaves was not influenced by the type of applicated fertilizer. Cultivation of soybean plants on soil fertilized with urea led to increased productivity elements compared to ammonium nitrate. Experimentally, it has been argued, the significant role of nitrogen sources in achieving mechanisms of functional integration and optimization of relations between roots and rhizosphere processes driven by microorganisms, thus, contributing to increase the productivity potential of soybean plants. en_US
dc.language.iso en en_US
dc.publisher “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi en_US
dc.subject soybean plants en_US
dc.subject ammonium nitrate en_US
dc.subject urea en_US
dc.subject urease activity en_US
dc.subject phosphatase activity en_US
dc.title Enzyme activity involved in n and p cycles, of soybean plant rhizosphere soil, roots and leaves en_US
dc.type Article en_US
dc.author.affiliation Oxana Daraban, Iana Bizgan, Ecaterina Emnova, Simion Toma, Institute of Plant Genetics, Physiology and Protection, Chisinau, Republic of Moldova
dc.publicationName Lucrări Ştiinţifice USAMV - Iaşi Seria Agronomie
dc.volume 57
dc.issue 2
dc.publicationDate 2014
dc.startingPage 179
dc.endingPage 182
dc.identifier.eissn 2069-6727


Files in this item

This item appears in the following Collection(s)

Show simple item record