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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/42680
Title: 
Doses and sources of nitrogen fertilizer and their effects on soil chemical properties and forage yield of Brachiaria brizantha cv. Xaraes
Author(s): 
Institution: 
Universidade Estadual Paulista (UNESP)
ISSN: 
1676-546X
Abstract: 
Forage plants, particularly the Brachiaria genus, are the main source of nutrients for cattle and are at times the only feed offered. The concentration of elements in the plant is related to the soil, fertilization, climate, season, variety, and cultural practices. An experiment on dystrophic Red-Yellow Latosol soil in Aracatuba, São Paulo was performed to evaluate the effects of the doses and sources of nitrogen fertilizers on the chemical properties of the soil and the dry matter yield of the grass Brachiaria brizantha cv. Xaraes. A randomized block design was employed involving three replicates in a 3 x 3 factorial, with three doses (100, 200 and 400 kg ha(-1) year(-1)) and three sources (Ajifer (R) L40, ammonium sulfate and urea) of nitrogen and a control treatment without nitrogen (zero). The greatest effects on the chemical properties of the soil as a function of nitrogen fertilization in the Xaraes grass were observed in the topsoil. The use of Ajifer (R) L40 and ammonium sulfate as sources of nitrogen had similar effects, with an increase in the sulfur content and a reduction in the soil pH at the superficial layer. The use of the fertilizers Ajifer (R) L40, ammonium sulfate and urea did not affect the micronutrient contents, except for Fe and Mn, and did not alter the sodium concentration or electrical conductivity of the soil. The dry matter yield of Xaraes grass was similar for all three nitrogen sources.
Issue Date: 
1-Jan-2012
Citation: 
Semina-ciencias Agrarias. Londrina: Universidade Estadual de Londrina (UEL), v. 33, n. 5, p. 1745-1754, 2012.
Time Duration: 
1745-1754
Publisher: 
Universidade Estadual de Londrina (UEL)
Keywords: 
  • Ajifer (R) L40
  • forage plant
  • plant nutrition
  • pasture
  • ammonium sulfate
  • urea
Source: 
http://dx.doi.org/10.5433/1679-0359.2012v33n5p1745
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/42680
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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