Effect of Vitazyme application timing on growth and development of coffee seedlings from grafts
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Abstract
The effect to the Vitazyme application was investigated in the growth of seedlings of Coffea arabica L. taken place by grafting during two nursery campaigns. The treatments studied were: Control - application of water to the leaf canopy; dipping in Vitazyme before sowing the grafting; Application of Vitazyme starting from the first couple of leaves; Application of Vitazyme starting from the second pair of leaves; Application of Vitazyme starting from the third pair of leaves and dipping seedlings in Vitazyme and apply complementary to the leaf canopy in the first, second and the third pair of leaves. The concentration of the product was of 1%. The stalk height, the diameter of the stalk, the fresh and dry mass of the shoot and root system and the foliar area was measured. During the two campaigns the positive effect of the application of Vitazyme on the coffee grafts was observed in the first stadiums of the plant with relationship to the control treatment. The application of Vitazyme increased the height between 16 and 45%, the stalk s diameter between 23 and 41%, the dry aerial mass between 40 and 55%, the dry mass of the root between 35 and 50% and the foliar area between 14 and 62%. For the seedlings production by means of the hipocotiledonar grafting technique the Vitazyme applications are recommended starting from the second pair of leaves.
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References
Acuña, O. (2001): Evaluación de la aplicación del producto VITAZYME (Estimulante de crecimiento derivado de enzimas) sobre la floración y fructificación en el cultivo del café.-- Univ. de Costa Rica; Centro de Investigaciones Agronómicas (CIA). Abril- Dic, 7 p.
Soto, F. (1980): Estimación del área foliar en Coffea arabica L. a partir de las medidas lineales de las hojas. Cultivos tropicales, 2(3): 115-128.
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