Efecto de los sustratos de cascarilla de arroz quemado al 50% y 75% en el rendimiento de tres variedades de Antirrhinum majus L. en invernadero.

Abstract

The present rescarch proposes: to evaluate the effect of 50% and 75% bumt rice husk substrates on the yield of three varieties of Antirrhinum majus L. in the greenhouse, in the Department of Horticulture, located at the Superior Polytechnic School of Chimborazo : for them three varieties of Antirrhinum majus L. Potomac yellow, Potomac rose and Rocket white were used as well as two substrates; 50% bumed rice husk: 50% raw (A2) and 75% bumed rice husk: 25% raw (Al); the design was randomized bifactorial complete blocks, as a result eight days after the transplant, 100% of the plants were obtained, the substrate A 1 (75% burned rice husk: 25% crude) obtained greater height at 30, 60 days after transplantation and harvest for the Potomac yellow variety with 16.82, 68.71 and 102.73 cm respectively, wi the largest stem diameter at 30. 60 days after transplantation and at harvest reached the Rocket white variety with 3.33, 4.8 and 6.68 mm respectively, the Potomac yellow variety transplanted in the A 1 substrate obtained better characteristics, achieving 50 % of flowering in 72 days; the least number of days to harvest with 66 days, the greatest length of inflorescence with 19.81 cm, the greatest amount of flowers open with flowers and the greatest amount of flowers per inflorescence with 22.68 flowers. Due to the optimum conditions of temperature (31.66 ° C) and humidity (33%) the substrate Al reacted in a positive way giving the plants adequate values of plH (6.9) and electrical conductivity (2.6 S/ cm) where the Potomac yellow variety stands out in its agronomic characteristics. It is concluded that substrate Al has optimal conditions for the cultivation of Antirrhinum majus L.