Forage productivity and morphogenesis of Megathyrsus maximus x M. infestum cv. Massai under phosphate fertilization
The effect of phosphorus fertilization (0, 30, 60, 90 and 120 kg of P2O5 ha-1) on green dry matter (GDM) yield and morphogenetic and structural characteristics of Megathyrsus maximus x M. infestum cv. Massai was evaluated under natural field conditions in Roraimas´s savannas. Phosphorus fertilizatio...
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| Format: | Article |
| Language: | English |
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Editora MV Valero
2022-06-01
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| Series: | Pubvet |
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| Online Access: | https://www.pubvet.com.br/artigo/9787/produtividade-de-forragem-e-morfogecircnese-de-megathyrsus-maximus-x-m-infestum-cv-massai-sob-fertilizaccedilatildeo-fosfatada |
| _version_ | 1797704436978548736 |
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| author | Newton de Lucena Costa Liana Jank João Avelar Magalhães Amaury Burlamaqui Bendahan Vicente Gianluppi Braz Henrique Nunes Rodrigues Francisco José de Seixas Santos |
| author_facet | Newton de Lucena Costa Liana Jank João Avelar Magalhães Amaury Burlamaqui Bendahan Vicente Gianluppi Braz Henrique Nunes Rodrigues Francisco José de Seixas Santos |
| author_sort | Newton de Lucena Costa |
| collection | DOAJ |
| description | The effect of phosphorus fertilization (0, 30, 60, 90 and 120 kg of P2O5 ha-1) on green dry matter (GDM) yield and morphogenetic and structural characteristics of Megathyrsus maximus x M. infestum cv. Massai was evaluated under natural field conditions in Roraimas´s savannas. Phosphorus fertilization increased significantly (P<.05) GDM yields, P concentrations, tiller populational density (TPD), live leaf tiller-1 number (LLTN), avarege leaf size (ALS), leaf area index (LAI), leaf senescence rate, leaf appearance rate (LAR) and elongation rates (LER). Maximum GDM yields, LAR, LER, TPD, LLTN, LAI and ALS were obtained with the application of 101.7; 62.5; 68.7; 80.8; 66.5; 91.7 and 74.1 kg of P2O5 ha-1, respectively. The P critic level, related to 80% of GDM maximum production, was estimated at 1.652 g kg-1. The P efficiency utilization was inversely proportional to the P rates applied. |
| first_indexed | 2024-03-12T05:20:24Z |
| format | Article |
| id | doaj.art-0cef5fc436954260815ad82255fb20d9 |
| institution | Directory Open Access Journal |
| issn | 1982-1263 |
| language | English |
| last_indexed | 2024-03-12T05:20:24Z |
| publishDate | 2022-06-01 |
| publisher | Editora MV Valero |
| record_format | Article |
| series | Pubvet |
| spelling | doaj.art-0cef5fc436954260815ad82255fb20d92023-09-03T07:41:31ZengEditora MV ValeroPubvet1982-12632022-06-011661510.31533/pubvet.v16n06a1148.1-6Forage productivity and morphogenesis of Megathyrsus maximus x M. infestum cv. Massai under phosphate fertilizationNewton de Lucena Costa0https://orcid.org/0000-0002-6853-3271Liana Jank1https://orcid.org/0000-0001-9436-3678João Avelar Magalhães2https://orcid.org/0000-0002-0270-0524Amaury Burlamaqui Bendahan3https://orcid.org/0000-0002-6853-3271Vicente Gianluppi4Braz Henrique Nunes Rodrigues5https://orcid.org/0000-0003-0094-6333Francisco José de Seixas Santos6Eng. Agr., D.Sc., Pesquisador da Embrapa Roraima, Boa Vista, RR.Eng. Agr., Ph.D., Pesquisadora da Embrapa Gado de Corte, Campo Grande, MSMéd. Vet., Pesquisador da Embrapa Meio-Norte, Parnaíba, PIEng. Agr., D.Sc., Pesquisador da Embrapa Roraima, Boa Vista, RREng. Agr., M.Sc., Pesquisador da Embrapa Roraima, Boa Vista, RR.Eng. Agrícola, D.Sc., Pesquisador da Embrapa Meio-Norte, Parnaíba, PI.Eng. Agr., D.Sc., Pesquisador da Embrapa Meio-Norte, Parnaíba, PIThe effect of phosphorus fertilization (0, 30, 60, 90 and 120 kg of P2O5 ha-1) on green dry matter (GDM) yield and morphogenetic and structural characteristics of Megathyrsus maximus x M. infestum cv. Massai was evaluated under natural field conditions in Roraimas´s savannas. Phosphorus fertilization increased significantly (P<.05) GDM yields, P concentrations, tiller populational density (TPD), live leaf tiller-1 number (LLTN), avarege leaf size (ALS), leaf area index (LAI), leaf senescence rate, leaf appearance rate (LAR) and elongation rates (LER). Maximum GDM yields, LAR, LER, TPD, LLTN, LAI and ALS were obtained with the application of 101.7; 62.5; 68.7; 80.8; 66.5; 91.7 and 74.1 kg of P2O5 ha-1, respectively. The P critic level, related to 80% of GDM maximum production, was estimated at 1.652 g kg-1. The P efficiency utilization was inversely proportional to the P rates applied.https://www.pubvet.com.br/artigo/9787/produtividade-de-forragem-e-morfogecircnese-de-megathyrsus-maximus-x-m-infestum-cv-massai-sob-fertilizaccedilatildeo-fosfatadaleavesgreen dry mattertilleringsenescence |
| spellingShingle | Newton de Lucena Costa Liana Jank João Avelar Magalhães Amaury Burlamaqui Bendahan Vicente Gianluppi Braz Henrique Nunes Rodrigues Francisco José de Seixas Santos Forage productivity and morphogenesis of Megathyrsus maximus x M. infestum cv. Massai under phosphate fertilization Pubvet leaves green dry matter tillering senescence |
| title | Forage productivity and morphogenesis of Megathyrsus maximus x M. infestum cv. Massai under phosphate fertilization |
| title_full | Forage productivity and morphogenesis of Megathyrsus maximus x M. infestum cv. Massai under phosphate fertilization |
| title_fullStr | Forage productivity and morphogenesis of Megathyrsus maximus x M. infestum cv. Massai under phosphate fertilization |
| title_full_unstemmed | Forage productivity and morphogenesis of Megathyrsus maximus x M. infestum cv. Massai under phosphate fertilization |
| title_short | Forage productivity and morphogenesis of Megathyrsus maximus x M. infestum cv. Massai under phosphate fertilization |
| title_sort | forage productivity and morphogenesis of megathyrsus maximus x m infestum cv massai under phosphate fertilization |
| topic | leaves green dry matter tillering senescence |
| url | https://www.pubvet.com.br/artigo/9787/produtividade-de-forragem-e-morfogecircnese-de-megathyrsus-maximus-x-m-infestum-cv-massai-sob-fertilizaccedilatildeo-fosfatada |
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