ARTÍCULO
TITULO

The influence of seed coating on the vigor and early seedling growth of barley

Francisco M.F. Corlett    
Cassyo de A. Rufino    
Jucilayne F. Vieira    
Lizandro C. Tavares    
Lilian V.M. Tunes    
Antonio C.S.A. Barros    

Resumen

Seed coating is a process in which a thin and uniform polymer layer is deposited on the surface of a seed. The objective of this study was to evaluate the vigor of barley seed coated with a commercial polymer and various combinations of calcium, silicon and fungicide. In addition to a control with only the polymer coating, a total of 17 seed coating treatments were used in a completely randomized factorial design (18 treatments × 4 replicates per treatment). Calcium and silicon were applied at concentrations of 0, 25 or 50 g kg-1 of seed, and 0 or 3.0 mL of fungicide was applied. The means were compared using a Duncan test (P=0.05). The results showed that a coating of polymer, fungicide, calcium and silicon did not affect the physiological quality of the barley seed and that the use of these products can protect the seed against pathogens without affecting the rate of emergence of the barley seedlings while ensuring good seed appearance, adhesion, distribution and coloration.   El recubrimiento de semillas consiste en la deposición de una capa delgada y uniforme de un polímero sobre la superficie de la semilla. El objetivo de este estudio fue evaluar el vigor de las semillas de cebada, revestido con calcio y silicio, polímero comercial y fungicida. Los tratamientos consistieron de dos concentraciones de calcio y silicio para el revestimiento de las semillas, con niveles de 0, 25 y 50 g kg-1 semilla. Se utilizó 3,0 mL de fungicida y un total de 17 tratamientos y un control, sin ningún tratamiento. El diseño experimental fue completamente al azar en un esquema factorial (18×4) y los resultados fueron analizados a través de la comparación de medias, utilizando la prueba de Duncan (P=0,05). Los resultados mostraron que las semillas de cebada recubiertas con fungicida, calcio y silicio, no se vieron afectadas en su calidad fisiológica y, posiblemente, el uso de estos productos protege la semilla contra patógenos, sin afectar su velocidad de aparición, y proporcionan semillas con buena apariencia, adherencia, distribución y coloración.

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