Evaluación de dos sustratos para la producción de dos variedades de Flowering kale (Brassica oleracea L.) variedades Crane Red y Feather King White en invernadero.

Abstract

Soil degradation by erosion, contamination, nutrient depletion, salinity and acidity reduces horticultural and floricultural production causing economic losses. For this reason, two substrates were evaluated to produce two varieties of Flowering kale in greenhouses. Pomina and rice husk were used, and two varieties, Feather King White, and Crane Red. As methodology, the greenhouse of the Department of Horticulture of Agronomy of the Espoch Riobamba branch was used, it was established in plastic bags, with four treatments and three replications, 12 plants were randomly selected for each experimental with a total of 144 plants evaluated. The percentage of establishment was recorded 15 days after transplanting, plant height and stem diameter were measured 30 and 60 days after transplanting and at harvest, and the apical diameter at cutting. Fertigation was used, using sources of macronutrients and micronutrients, according to the needs of the crop, as well as phytosanitary control and the corresponding cultural practices. The highest plant height at 30 days and at harvest was obtained in pomina with 16.62 and 37.9 cm, the Crane Red variety with 16.33 and 41.25 cm and in the Pomina*Crane Red interaction with 19.33 and 44.23 cm respectively. At 60 days, Crane Red was at 35.06 cm. The largest stem diameter at 30 and 60 days was Pomina*Crane Red with 6.11 and 7.75 mm respectively, at harvest in Pomina with 8.81 and Crane Red with 9 mm. The largest apical diameter in husk was 8.5 and Crane Red 9.56 cm; Feather King White obtained 113714.29 stems/ha. The highest benefit/cost ratio was 1.47 with 46.93% profitability at C2.