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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Zinc application in seeds of sorghum cv. BRS 304: effects on nutrition and initial growth

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Author(s):
Renato de Mello Prado [1] ; Liliane Maria Romualdo [2] ; Danilo Eduardo Rozane [3]
Total Authors: 3
Affiliation:
[1] Universidade Estadual Paulista. Faculdade de Ciências Agrárias e Veterinárias. Departamento de Solos e Adubos - Brasil
[2] Universidade Estadual Paulista. Faculdade de Ciências Agrárias e Veterinárias. Departamento de Solos e Adubos - Brasil
[3] Universidade Estadual Paulista. Faculdade de Ciências Agrárias e Veterinárias. Departamento de Solos e Adubos - Brasil
Total Affiliations: 3
Document type: Journal article
Source: Acta Scientiarum. Agronomy; v. 30, n. 4, p. 471-478, 2008-12-00.
Abstract

The effect of zinc applied in seeds on the nutrition of sorghum is affected by the sources and applied rate. The present work aimed to evaluate zinc application, from two sources, on the nutrition and initial growth of a culture of sorghum cv. BRS 304, cultivated in sand. The treatments consisted of five rates (0, 14.3, 28.6, 57.2 and 114.4 g kg-1 of seed) and two zinc sources - sulphate (22% Zn) and oxide (50% Zn). At 25 days after sowing, the plants were cut. The aerial and root dry mass was evaluated, and the levels and accumulation of Zn in the plants were determined. The application of 14 g Zn kg-1 of seeds, in oxide form, provided adequate initial growth of sorghum cv. BRS 304. The sulphate source promoted greater absorption of Zn for the plants, reaching in its highest dosis, high levels of the nutrient in the aerial part (> 4170 mg kg-1) and developing characteristic symptoms of phytoxicity. (AU)