Efecto de la iluminación LEDs de 150 w en la producción aeropónica de acelga (Beta vulgaris subsp. Vulgaris L.) Var. Ford hook giant en invernadero.

Abstract

The present investigation proposes: to evaluate the effect of LEDs lighting of 150W in the aeroponics production of chard (Beta vulgaris subsp. L.) Var Ford Hook Giant in the greenhouse of the horticultural department, at Escuela Superior Politecnica de Chimborazo; three treatments, T1 LEDs lights 24 hours, T2 LEDs lights 16 hours and T3 daylight were carried out, the design was a randomized complete block BCA, as a result, 15 days after the plant placed, a 100% yield percentage was obtained in the system, The T1 treatment (24 hours LEDs light) reached the higher plant height at 23, 31, 39 days and at harvest with 20,51, 27,51, 36,23 and 46.78 cm respectively, at 15 days there were no significant differences between treatments; T1 reached the highest number of leaves at 15, 23, 31, 39 days and the harvest with 5,27, 11,90, 12,43, 12,64, 13,53 leaves respectively; the T1 reached the longest root length at 15, 23, 31, 39 days, with 19, 65, 46, 28 62,88 and 73,98 cm and at harvest, no significant differences were found between treatments, T1 reached the largest diameter at 31, 39 and harvest, with 5,81, 10,87 and 14,33 mm respectively, no differences were found between treatments at 15 and 23 days. T1 reached the highest of chlorophyll at 23, 31, 39 and at harvest, with 15, 70, 35,51, 41,81 44,94 SPAD respectively, no significant differences were found between treatments at the 15 days. It is concluded that the T1 treatment reached the highest weight of matter dry to harvest with 18,33 g in 0,72 m2 and the highest benefit-cost ratio with 2.20% and a rate of return of 119,81%.