Nitrogen fertilization by deep-bedding swine production and its effects on the properties of a Quartzarenic Neosol

Engenharia Agrícola

Alessandro T. Campos¹  Alessandro V. Veloso²  Enilson De B Silva²  Tadayuki Yanagi Junior¹  Elcio S. Klosowski² 

[1] ,UFLA Departamento de Engenharia Lavras MG

关键词: swine production;    swine buildings;    alternative management;    waste treatment;    organic fertilizer;    quartz-sand neosol;    suinocultura;    instalações para suínos;    manejo alternativo;    tratamento de dejetos;    adubo orgânico;    Neossolo Quartzarênico;   

DOI  :  10.1590/S0100-69162012000400015

来源: SciELO

【 摘 要 】

The objective of this study was to evaluate the effects of the nitrogen fertilization in the form of swine deep bed in the properties of a quartz-sand neosol. The organic compound used was the deep bed made with rice hulls, from a commercial swine finishing system farm. Deep bed samples have been collected at various points in the installation in order to obtain a representative composite sample which has been fractionated in a 2.0 mm sieve and submitted to a 50-day maturation period. Then, agronomic value analyses were done. The experimental design was completely randomized. The treatments consisted of 0; 75; 150 and 300 mg dm-3 of N doses of deep bed as well as an additional treatment with ammonium sulfate at a 150 mg dm-3 of N. The experimental period in the greenhouse was 45 days, where the soil was cultivated with maize. After the experiment completion, further soil properties analyses were done. From the results, it was noted that the organic fertilization with deep bed provided a significant increase in the levels of potassium, in the sum of the bases, in the effective CEC, in the CEC at pH 7.0 and in the percentage of saturation.

【 授权许可】

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