EVALUATION OF FOUR IRON CONCENTRATIONS (FE) IN THE NUTRITIVE SOLUTION AND EFFECT OF THE PLASTIC COVERING ON THE PRODUCTION AND QUALITY OF THE HYDROPONIC GREEN FORAGE (VHF) ; EVALUACIÓN DE CUATRO CONCENTRACIONES DE HIERRO (FE) EN LA SOLUCIÓN NUTRITIVA Y EFECTO DE LA COBERTURA PLÁSTICA EN LA PRODUCCIÓN Y CALIDAD DEL FORRAJE VERDE HIDROPÓNICO (FVH)

The main objective was to determine the adequate levels of iron in the nutrient solution, to improve the production and quality of FVH. It was carried out at Finca Aranda, corregimiento de Pocrí, District of Pocrí, Province of Los Santos, during the rainy season. An F2 line of the hybrid PIONEER 30F-35 and Digitaria swazilandensis (Swazi) dry grass was used. The experimental design is a factorial arrangement in split plot modality, implemented with a randomized complete forest design (DBCA) and two repetitions. Where the effect of the main plot is the type of cover of the trays (With plastic – Without plastic); and the sub-plot factor is the concentration of iron (Fe) in the nutrient solution 0 ppm, 0.1 ppm, 0.5 ppm and 1 ppm. As a result, it was obtained that: for the height at six days the concentration of 0 ppm and the plastic cover present the highest mean. Regarding the height, at 12 days, the concentration of 0.5 ppm together with the plastic cover presents the highest average. The concentration of 0 ppm and the plastic cover presents the highest mean for biomass production. In the iron concentration, the highest mean, it was presented in 1 ppm without plastic cover. In the bromatological analyses, the concentration of Ca, P, Mn is within acceptable ranges; in Na, K and Cu are at levels below that required in the production of meat and milk. Concluding that the concentration of 0.5 ppm, together with the plastic cover presented the best averages and health. ; El objetivo principal fue determinar los niveles adecuados de hierro en la solución nutritiva, para mejorar la producción y calidad del FVH. Se realizó en la Finca Aranda, corregimiento de Pocrí, distrito de Pocrí, provincia de Los Santos, en época de lluvia. Se utilizó una línea F2 del hibrido PIONEER 30F - 35 y Pasto seco Digitaria swazilandensis (Swazi). El diseño experimental es un arreglo factorial en modalidad de parcelas divididas, implementado con diseño de boques completos al azar (DBCA) y dos repeticiones. Donde el efecto de la parcela ...