Crescimento radicular e aéreo de cultivares de arroz de terras altas em função da calagem
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Data
2012-04-01
Autores
Costa Crusciol, Carlos Alexandre [UNESP]
Cuzato Mancuso, Mauricio Antonio [UNESP]
Garcia, Rodrigo Arroyo
Amaral Castro, Gustavo Spadotti [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Instituto Agronômico
Resumo
This work aimed to evaluate root growth, shoot development and nutrient absorption efficiency by rice cultivars Caiapo and Maravilha as affected by lime application. The experiment was carried out in a greenhouse, with treatments set up by Caiapo and Maravilha cultivars in combination with the base saturation (V%) of 10%, 40% and 70%. The experiment was in a randomized complete block design, with four replications. The number of tillers, root length, root dry matter, leaves and stems, leaf content and macronutrients absorption efficiency were evaluated. Comparing cultivars, Maravilha cultivar presented higher root dry weight, root length, number of stems, dry matter of stems and shoot than Caiapo cultivar, as well as accumulated more nutrients in the shoots. on the other hand, nutrient contents were higher in the cultivar Caiapo compared to Maravilha. Maravilha cultivar shows greater root and shoot growth while Caiapo shows higher nutrient absorption efficiency from the soil. The base saturation of 40% is the most effective for both cultivars.
Descrição
Palavras-chave
Oryza sativa, nutrient accumulation, root, absorption efficiency
Como citar
Bragantia. Campinas: Instituto Agronômico, v. 71, n. 2, p. 256-263, 2012.