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Effects of the application of sewage sludge and fowl manure on soils of Paraná state in maize plants (Zea mays L.) as a macro-nutrients source BABT
Gobbi,Marlene A.; Pigozzo,Ana T. Jordão; Lenzi,Ervim; Luchese,Eduardo B..
The potential of two organic residues as sources of macro-nutrients in three types of soils of the third plateau of Paraná state was studied. Treatment consisted of a dose (38 t.ha-1) of fowl manure and sewage sludge neutralized by a 3:1 (CaO+MgO) mixture. Fowl manure was kept in natura. Maize (Zea mays L.)was reference plant. After 30 days of seeding, the aerial parts of the plants were cut. They were dried at 70 0C till constant weight was obtained, then weighted and ground. Analyses were undertaken after nitric-perchloric digestion of the samples. Macro-nutrient levels in soils and in plants were determined by atomic absorption spectrometry, flame technique. Results showed that production of dry matter was higher when fowl manure was used. Levels of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sewage sludge; Macro-nutrients; Maize culture; Soil fertility.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000200003
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