Yield and nitrogen balance in corn grown under no-tillage system

Yield and nitrogen balance in corn grown under no-tillage system

ABSTRACT The corn crop is highly responsive to nitrogen fertilization; however, the application of high doses generally causes a reduction in the use efficiency of fertilizer. In this sense, this study aimed to determine the yield and nitrogen balance in corn grown under the no-tillage system. The experiment consisted of the application of four nitrogen doses (0, 30; 70 and 95 kg ha-1). In all plots with the AG 1051 hybrid corn, 80 and 56 kg ha-1 of P2O5 and K2O were applied, respectively. The experiment was arranged in a randomized block design with five replications. The grain yield had a linear increasing behavior according to the nitrogen doses, which reached 5,684.79 kg ha-1. The fertilization efficiency and the N extraction increased linearly with the increase of the nitrogen doses, obtaining with the highest dose the extraction of 114.93 kg ha-1 of N and a fertilization efficiency of 65%. The soil N stock of 4,489 kg ha-1 provides corn plants with 52.81 kg ha-1 of this nutrient. Corn adjusts the biomass production according to the availability of nitrogen, with no effect of N doses on the nutrient content in plant tissues.

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Main Authors: Silva,Helton de S., Souza,Adailson P. de, Carvalho,Mary A. B. de, Silva,Valéria B. da, Barbosa,Ewerton da S., Santos,Michelly F. dos
Format: Digital revista
Language:English
Published: Departamento de Engenharia Agrícola - UFCG 2020
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020001100728
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spelling oai:scielo:S1415-436620200011007282020-10-28Yield and nitrogen balance in corn grown under no-tillage systemSilva,Helton de S.Souza,Adailson P. deCarvalho,Mary A. B. deSilva,Valéria B. daBarbosa,Ewerton da S.Santos,Michelly F. dos Zea mays fertilization efficiency nitrogen fertilization nitrogen in the soil ABSTRACT The corn crop is highly responsive to nitrogen fertilization; however, the application of high doses generally causes a reduction in the use efficiency of fertilizer. In this sense, this study aimed to determine the yield and nitrogen balance in corn grown under the no-tillage system. The experiment consisted of the application of four nitrogen doses (0, 30; 70 and 95 kg ha-1). In all plots with the AG 1051 hybrid corn, 80 and 56 kg ha-1 of P2O5 and K2O were applied, respectively. The experiment was arranged in a randomized block design with five replications. The grain yield had a linear increasing behavior according to the nitrogen doses, which reached 5,684.79 kg ha-1. The fertilization efficiency and the N extraction increased linearly with the increase of the nitrogen doses, obtaining with the highest dose the extraction of 114.93 kg ha-1 of N and a fertilization efficiency of 65%. The soil N stock of 4,489 kg ha-1 provides corn plants with 52.81 kg ha-1 of this nutrient. Corn adjusts the biomass production according to the availability of nitrogen, with no effect of N doses on the nutrient content in plant tissues.info:eu-repo/semantics/openAccessDepartamento de Engenharia Agrícola - UFCGRevista Brasileira de Engenharia Agrícola e Ambiental v.24 n.11 20202020-11-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020001100728en10.1590/1807-1929/agriambi.v24n11p728-734
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country Brasil
countrycode BR
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libraryname SciELO
language English
format Digital
author Silva,Helton de S.
Souza,Adailson P. de
Carvalho,Mary A. B. de
Silva,Valéria B. da
Barbosa,Ewerton da S.
Santos,Michelly F. dos
spellingShingle Silva,Helton de S.
Souza,Adailson P. de
Carvalho,Mary A. B. de
Silva,Valéria B. da
Barbosa,Ewerton da S.
Santos,Michelly F. dos
Yield and nitrogen balance in corn grown under no-tillage system
author_facet Silva,Helton de S.
Souza,Adailson P. de
Carvalho,Mary A. B. de
Silva,Valéria B. da
Barbosa,Ewerton da S.
Santos,Michelly F. dos
author_sort Silva,Helton de S.
title Yield and nitrogen balance in corn grown under no-tillage system
title_short Yield and nitrogen balance in corn grown under no-tillage system
title_full Yield and nitrogen balance in corn grown under no-tillage system
title_fullStr Yield and nitrogen balance in corn grown under no-tillage system
title_full_unstemmed Yield and nitrogen balance in corn grown under no-tillage system
title_sort yield and nitrogen balance in corn grown under no-tillage system
description ABSTRACT The corn crop is highly responsive to nitrogen fertilization; however, the application of high doses generally causes a reduction in the use efficiency of fertilizer. In this sense, this study aimed to determine the yield and nitrogen balance in corn grown under the no-tillage system. The experiment consisted of the application of four nitrogen doses (0, 30; 70 and 95 kg ha-1). In all plots with the AG 1051 hybrid corn, 80 and 56 kg ha-1 of P2O5 and K2O were applied, respectively. The experiment was arranged in a randomized block design with five replications. The grain yield had a linear increasing behavior according to the nitrogen doses, which reached 5,684.79 kg ha-1. The fertilization efficiency and the N extraction increased linearly with the increase of the nitrogen doses, obtaining with the highest dose the extraction of 114.93 kg ha-1 of N and a fertilization efficiency of 65%. The soil N stock of 4,489 kg ha-1 provides corn plants with 52.81 kg ha-1 of this nutrient. Corn adjusts the biomass production according to the availability of nitrogen, with no effect of N doses on the nutrient content in plant tissues.
publisher Departamento de Engenharia Agrícola - UFCG
publishDate 2020
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020001100728
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