Urochloa ruziziensis responses to sources and doses of urea
ABSTRACT The use of products that promote reduction of nitrogen (N) losses from the urea fertilizer can contribute to increasing its use efficiency in forage grasses. This study aimed to evaluate the effects of N sources and doses on the growth of Urochloa ruziziensis. The experiment was carried out...
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Universidade Federal de Campina Grande
2016-05-01
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| Series: | Revista Brasileira de Engenharia Agrícola e Ambiental |
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| author | João E. S. Lima Adriano S. Nascente Wilson M. Leandro Pedro M. da Silveira |
| author_facet | João E. S. Lima Adriano S. Nascente Wilson M. Leandro Pedro M. da Silveira |
| author_sort | João E. S. Lima |
| collection | DOAJ |
| description | ABSTRACT The use of products that promote reduction of nitrogen (N) losses from the urea fertilizer can contribute to increasing its use efficiency in forage grasses. This study aimed to evaluate the effects of N sources and doses on the growth of Urochloa ruziziensis. The experiment was carried out in the growing season of 2007/2008 in Santo Antônio de Goiás-GO, in a Brazilian Oxisol. A completely randomized block was used, with four replicates in a factorial scheme, corresponding to two N sources (conventional urea and urea with urease inhibitor) and five N doses (0, 50, 100, 200 and 300 kg ha-1), divided into equal applications in five periods (Nov 14 to Dec 13, Dec 14 to Jan 12, Jan 13 to Feb 11 - rainy season, Mar 24 to Apr 22 and Jul 10 to Aug 08 - dry season). The effects of the treatments were evaluated for: shoot dry matter, tiller density, total N content in the leaves and relative chlorophyll content. N fertilizer sources did not affect the evaluated variables; however, N fertilization allowed linear increases in all variables with higher values during the rainy period. The relative chlorophyll content in U. ruziziensis had positive correlation with its dry matter productivity. |
| format | Article |
| id | doaj-art-17558f8dacd74cb1bb6f76b5a8840949 |
| institution | OA Journals |
| issn | 1807-1929 |
| language | English |
| publishDate | 2016-05-01 |
| publisher | Universidade Federal de Campina Grande |
| record_format | Article |
| series | Revista Brasileira de Engenharia Agrícola e Ambiental |
| spelling | doaj-art-17558f8dacd74cb1bb6f76b5a88409492025-08-20T02:25:55ZengUniversidade Federal de Campina GrandeRevista Brasileira de Engenharia Agrícola e Ambiental1807-19292016-05-0120540140710.1590/1807-1929/agriambi.v20n5p401-407S1415-43662016000500401Urochloa ruziziensis responses to sources and doses of ureaJoão E. S. LimaAdriano S. NascenteWilson M. LeandroPedro M. da SilveiraABSTRACT The use of products that promote reduction of nitrogen (N) losses from the urea fertilizer can contribute to increasing its use efficiency in forage grasses. This study aimed to evaluate the effects of N sources and doses on the growth of Urochloa ruziziensis. The experiment was carried out in the growing season of 2007/2008 in Santo Antônio de Goiás-GO, in a Brazilian Oxisol. A completely randomized block was used, with four replicates in a factorial scheme, corresponding to two N sources (conventional urea and urea with urease inhibitor) and five N doses (0, 50, 100, 200 and 300 kg ha-1), divided into equal applications in five periods (Nov 14 to Dec 13, Dec 14 to Jan 12, Jan 13 to Feb 11 - rainy season, Mar 24 to Apr 22 and Jul 10 to Aug 08 - dry season). The effects of the treatments were evaluated for: shoot dry matter, tiller density, total N content in the leaves and relative chlorophyll content. N fertilizer sources did not affect the evaluated variables; however, N fertilization allowed linear increases in all variables with higher values during the rainy period. The relative chlorophyll content in U. ruziziensis had positive correlation with its dry matter productivity.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000500401&lng=en&tlng=enforrageiranitrogênioteor de clorofilaureia estabilizada |
| spellingShingle | João E. S. Lima Adriano S. Nascente Wilson M. Leandro Pedro M. da Silveira Urochloa ruziziensis responses to sources and doses of urea Revista Brasileira de Engenharia Agrícola e Ambiental forrageira nitrogênio teor de clorofila ureia estabilizada |
| title | Urochloa ruziziensis responses to sources and doses of urea |
| title_full | Urochloa ruziziensis responses to sources and doses of urea |
| title_fullStr | Urochloa ruziziensis responses to sources and doses of urea |
| title_full_unstemmed | Urochloa ruziziensis responses to sources and doses of urea |
| title_short | Urochloa ruziziensis responses to sources and doses of urea |
| title_sort | urochloa ruziziensis responses to sources and doses of urea |
| topic | forrageira nitrogênio teor de clorofila ureia estabilizada |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000500401&lng=en&tlng=en |
| work_keys_str_mv | AT joaoeslima urochloaruziziensisresponsestosourcesanddosesofurea AT adrianosnascente urochloaruziziensisresponsestosourcesanddosesofurea AT wilsonmleandro urochloaruziziensisresponsestosourcesanddosesofurea AT pedromdasilveira urochloaruziziensisresponsestosourcesanddosesofurea |