ISSN 2285-5785, ISSN CD-ROM 2285-5793, ISSN ONLINE 2285-5807, ISSN-L 2285-5785
 

Research about manganese regime from agricultural eco-systems improved by the sewage sludge

Published in Scientific Papers. Series A. Agronomy, Vol. LV-2012
Written by Nicolaie IONESCU, Gelu MUJEA, Marilena DIACONU, Ana IORDĂNESCU, Sorin Gabriel IONESCU

Mn is another element in the category of heavy metals, which in small quantities is useful in feeding the plant, while the excess could induce specific phytotoxic phenomena. For the purpose of observing trends of Mn content of plants were used progressive sludge doses: between 0 and 50 t,ha-1, with doses of chemical fertilizer: 0, ½ and 1/1 of crops specific needs. In general, mobile Mn ranged between 400 and 650 mg, which are relatively high concentrations. Under these conditions the plants have absorbed field Mn2+ ions in specific quantities. The correlations obtained between the contents of Mn and complex doses shows obvious increase in leaves of maize (r=0.832***) and soybean (r=0,530*), inconclusive in wheat (both years), and decreased concentrations of Mn in the three species grains. Such researches might reveal some aspects in relation to nutrition with micronutrients such as Mn, of each plant part.

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{tag}meta name="citation_title" content="Research  about  manganese  regime  from  agricultural eco-systems improved  by the sewage sludge"{/tag} {tag}meta name="citation_journal_title" content="Scientific Papers. Series A. Agronomy"{/tag} {tag}meta name="citation_publication_date" content="2012"{/tag} {tag}meta name="citation_author" content="Nicolaie IONESCU" {/tag} {tag}meta name="citation_author" content=" Gelu MUJEA" {/tag} {tag}meta name="citation_author" content=" Marilena DIACONU" {/tag} {tag}meta name="citation_author" content=" Ana IORDĂNESCU" {/tag} {tag}meta name="citation_author" content=" Sorin Gabriel IONESCU " {/tag} 

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