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Ammonia volatilization from surface application of organic residues and urea on Marandu palisadegrass

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      Abstract

      The objective of this study was to measure ammonia volatilization from surface application of pig slurry, poultry litter, urea and no fertilization. An experiment was conducted in a randomized block design, in plots repeated over time, with four treatments and four replications. The fertilizers tested were: mineral fertilizer (70 kg ha-1 N, 100 kg ha-1 P2O5 and 30 kg ha-1 of K2O, as urea, triple superphosphate and potassium chloride, respectively), pig slurry (200 m³ ha-1 applied in November 2008 and 200 m³ ha-1 applied in April 2009) and poultry litter (10 t ha-1 applied in November 2008 and 10 t ha-1 applied in April 2009). Five evaluations were performed with 24-hour intervals. Foams were used with glycerin and sulfuric acid, internally fixed in PET bottles for collecting ammonia. After collected, the samples were sent to the laboratory to determine volatilized ammonia levels by the semi-micro Kjedahl distillation method. Fertilization with chicken litter had lower ammonia volatilization in relation to urea and pig slurry. Most of the ammonia volatilization from pig slurry occurred within 48 hours after application, totaling losses of 630 g kg-1 of a total of 8.25 kg ha-1 of volatilized ammonia. The biggest loss by ammonia volatilization was from fertilization with urea, totaling approximately 80 g kg-1 of N applied.

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      Most cited references 19

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      Manual de análises químicas de solos, plantas e fertilizantes

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        Sistema de Classificação de Solos.

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          Perdas por volatilização do nitrogênio fertilizante aplicado em pomares de citros

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            Author and article information

            Affiliations
            [1 ] Universidade de Rio Verde Brazil
            [2 ] Embrapa Solos Brazil
            Contributors
            Role: ND
            Role: ND
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            Journal
            rbz
            Revista Brasileira de Zootecnia
            R. Bras. Zootec.
            Sociedade Brasileira de Zootecnia (Viçosa )
            1806-9290
            April 2013
            : 42
            : 4
            : 301-304
            S1516-35982013000400010 10.1590/S1516-35982013000400010

            http://creativecommons.org/licenses/by/4.0/

            Product
            Product Information: SciELO Brazil
            Categories
            AGRICULTURE, DAIRY & ANIMAL SCIENCE
            VETERINARY SCIENCES

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