Rates and sources of nitrogen fertilizer application on yield and quality of Panicum maximum cv. Mombasa

ABSTRACT The effects of nitrogen fertilizer sources (urea and ammonium nitrate) applied at different rates on the yield and quality of Megathyrsus maximus cv. Mombasa were compared in this study. The nitrogen rates applied after each monthly harvest were 0, 50, 100, 150 and 200 kg N/ha (i.e., 0, 150...

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Autores principales:	Galindo,Fernando Shintate, Buzetti,Salatiér, Minhoto Teixeira Filho,Marcelo Carvalho, Dupas,Elisángela
Lenguaje:	English
Publicado:	Universidad de Tarapacá. Facultad de Ciencias Agronómicas 2019
Materias:	Ammonium nitrate crude protein fertilizer responses guinea grass urea
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292019000200067
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spelling	oai:scielo:S0718-342920190002000672019-10-14Rates and sources of nitrogen fertilizer application on yield and quality of Panicum maximum cv. MombasaGalindo,Fernando ShintateBuzetti,SalatiérMinhoto Teixeira Filho,Marcelo CarvalhoDupas,Elisángela Ammonium nitrate crude protein fertilizer responses guinea grass urea ABSTRACT The effects of nitrogen fertilizer sources (urea and ammonium nitrate) applied at different rates on the yield and quality of Megathyrsus maximus cv. Mombasa were compared in this study. The nitrogen rates applied after each monthly harvest were 0, 50, 100, 150 and 200 kg N/ha (i.e., 0, 150, 300, 450 and 600 kg N/ha/year). The N fertilizer sources did not affect the Mombasa grass response to any of the production and nutritional characteristics; however, increasing nitrogen rates there was significantly increased dry matter yield and crude protein percentage, and decreased neutral detergent fiber (NDF) concentrations. Dry matter yield in control treatments was 31.3 t/ha, and responses reached a maximum of 30% with the application of 150 kg N/ha/cut, but considering the economical rate, the better economic return occurs with the application of 115 kg N/ha/cut. As urea has a lower price per unit of N than ammonium nitrate, it seems to be the best choice of fertilizer. Further studies are needed to determine why the dry matter yields of forage were so high and in what seasons should N fertilizer be applied when resources are limited. Longer-term studies would confirm these findings and assess the losses of N to the atmosphere or by leaching, especially at the higher rates.info:eu-repo/semantics/openAccessUniversidad de Tarapacá. Facultad de Ciencias AgronómicasIdesia (Arica) v.37 n.2 20192019-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292019000200067en10.4067/S0718-34292019000200067
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Ammonium nitrate crude protein fertilizer responses guinea grass urea
spellingShingle	Ammonium nitrate crude protein fertilizer responses guinea grass urea Galindo,Fernando Shintate Buzetti,Salatiér Minhoto Teixeira Filho,Marcelo Carvalho Dupas,Elisángela Rates and sources of nitrogen fertilizer application on yield and quality of Panicum maximum cv. Mombasa
description	ABSTRACT The effects of nitrogen fertilizer sources (urea and ammonium nitrate) applied at different rates on the yield and quality of Megathyrsus maximus cv. Mombasa were compared in this study. The nitrogen rates applied after each monthly harvest were 0, 50, 100, 150 and 200 kg N/ha (i.e., 0, 150, 300, 450 and 600 kg N/ha/year). The N fertilizer sources did not affect the Mombasa grass response to any of the production and nutritional characteristics; however, increasing nitrogen rates there was significantly increased dry matter yield and crude protein percentage, and decreased neutral detergent fiber (NDF) concentrations. Dry matter yield in control treatments was 31.3 t/ha, and responses reached a maximum of 30% with the application of 150 kg N/ha/cut, but considering the economical rate, the better economic return occurs with the application of 115 kg N/ha/cut. As urea has a lower price per unit of N than ammonium nitrate, it seems to be the best choice of fertilizer. Further studies are needed to determine why the dry matter yields of forage were so high and in what seasons should N fertilizer be applied when resources are limited. Longer-term studies would confirm these findings and assess the losses of N to the atmosphere or by leaching, especially at the higher rates.
author	Galindo,Fernando Shintate Buzetti,Salatiér Minhoto Teixeira Filho,Marcelo Carvalho Dupas,Elisángela
author_facet	Galindo,Fernando Shintate Buzetti,Salatiér Minhoto Teixeira Filho,Marcelo Carvalho Dupas,Elisángela
author_sort	Galindo,Fernando Shintate
title	Rates and sources of nitrogen fertilizer application on yield and quality of Panicum maximum cv. Mombasa
title_short	Rates and sources of nitrogen fertilizer application on yield and quality of Panicum maximum cv. Mombasa
title_full	Rates and sources of nitrogen fertilizer application on yield and quality of Panicum maximum cv. Mombasa
title_fullStr	Rates and sources of nitrogen fertilizer application on yield and quality of Panicum maximum cv. Mombasa
title_full_unstemmed	Rates and sources of nitrogen fertilizer application on yield and quality of Panicum maximum cv. Mombasa
title_sort	rates and sources of nitrogen fertilizer application on yield and quality of panicum maximum cv. mombasa
publisher	Universidad de Tarapacá. Facultad de Ciencias Agronómicas
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292019000200067
work_keys_str_mv	AT galindofernandoshintate ratesandsourcesofnitrogenfertilizerapplicationonyieldandqualityofpanicummaximumcvmombasa AT buzettisalatier ratesandsourcesofnitrogenfertilizerapplicationonyieldandqualityofpanicummaximumcvmombasa AT minhototeixeirafilhomarcelocarvalho ratesandsourcesofnitrogenfertilizerapplicationonyieldandqualityofpanicummaximumcvmombasa AT dupaselisangela ratesandsourcesofnitrogenfertilizerapplicationonyieldandqualityofpanicummaximumcvmombasa
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Rates and sources of nitrogen fertilizer application on yield and quality of Panicum maximum cv. Mombasa

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