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Irrigação Com Água Salina No Crescimento Inicial De Três Cultivares De Algodão
| Content Provider | Semantic Scholar |
|---|---|
| Author | Oliveira, André Moreira De Oliveira, Andler Milton De Paiva Dias, Nildo Da Silva Medeiros, José Francismar De |
| Copyright Year | 2008 |
| Abstract | irrigacao com agua salina no crescimento inicial de tres cultivares de algodao Andre Moreira de Oliveira; Andler Milton de Paiva Oliveira; Nildo da Silva Dias; Jose Francismar MedeirosDepartamento de Ciencias Ambientais, Universidade Federal Rural do Semi-Arido, Mossoro, RN, andlermilton@hotmail.com 1 RESUMO A salinidade dos solos reduz a absorcao de agua pelas plantas, interferindo no metabolismo e, consequentemente, no crescimento e producao das mesmas. Com o objetivo de investigar o comportamento de tres cultivares de algodao, (“VERDE”, “MARROM” e “8H”) irrigados com aguas de diferentes niveis de salinidade (0,5; 2,5; 4,5; 6,5 e 8,5 dS m-1), conduziu-se um experimento em ambiente protegido na Universidade Federal Rural do Semi-Arido, localizado no municipio de Mossoro – RN. As variaveis analisadas foram: consumo hidrico, altura de planta, fitomassas fresca e seca e area foliar. Foi utilizado o delineamento inteiramente casualizado com tres repeticoes e quinze tratamentos. As variaveis analisadas foram afetadas significativamente pelos niveis de salinidade testados, afetando o desenvolvimento das tres cultivares, sendo diretamente proporcionais ao aumento da concentracao salina da agua de irrigacao e ao tempo de exposicao da planta ao tratamento. UNITERMOS: condutividade eletrica, salinidade, Gossypium sp. OLIVEIRA, A. M. de; OLIVEIRA, A. M. de P.; DIAS, N. da S.; MEDEIROS, J. F. Effect of irrigation with saline water on the development of three cotton cultivars 2 ABSTRACT The salinity of soil reduces the absorption of water by plants, interfering in the metabolism and, consequently, in plant yield. The objective of this work was to study the behavior of three cotton cultivars, ("VERDE", "MARROM" and "8H") irrigated with water of different salinities (0.5; 2.5; 4.5; 6.5 and 8.5 dS m-1). The experiment was conducted in a controlled environment at theFederalRuralUniversity of the Semi-Arid Region, Mossoro,Rio Grande doNorte State,Brazil. The analyzed variables were: water consumption, height of plant, fresh and dry mass, and leaf area. A completely randomized design with three replicates and fifteen treatments was used. The analyzed variables had a significant effect on the levels of salinities tested, affecting the development of the three cultivars. The effects were directly proportional to the increase of salt concentration in the irrigation water and to the exposition time to the treatment. KEY WORDS: electric conductivity, salinity, Gossypium sp. |
| Starting Page | 467 |
| Ending Page | 475 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| DOI | 10.15809/irriga.2008v13n4p467-475 |
| Alternate Webpage(s) | http://irriga.fca.unesp.br/index.php/irriga/article/download/3384/2138 |
| Alternate Webpage(s) | https://doi.org/10.15809/irriga.2008v13n4p467-475 |
| Volume Number | 13 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
