Resumo

BLANCO CHURA, Adolfo  e  ARRAGAN TANCARA, Fanny Bertha. Aerobic liquid organic fertilizer (AOLA) concentrations in the cultivation of broccoli (Brassica oleracea) by means of drip irrigation. RIIARn [online]. 2020, vol.7, n.2, pp.66-72. ISSN 2409-1618.

Abstract In recent years, alternatives have been sought to improve soils, with the application of organic fertilizers in solid or liquid form, to continue harvesting with the same and better yields, in that sense, aerobic liquid organic fertilizer (AOLA) is applied and in an automated way in drip irrigation, and thus evaluate the agronomic behavior and determine the most efficient level of concentration of AOLA for broccoli cultivation, which is a vegetable with significant amounts of nutrients, vitamins, proteins and mineral salts of great importance to health since it has effects on strengthening the immune system and anti-cancer. Di Cicco variety was evaluated under controlled environments, through a completely randomized design, with the following response variables: plant height, numberof leaves, stem diameter, days to the formation of the peel, cultivation yield, chemical and physical properties of the soil and economic analysis. From the results: the plant height with a 20 % AOLA level reached the highest averages with 84.8 cm, the highest number of leaves was presented with the 20 % AOLA level and 30% with 12 leaves per plant, stem diameter was better with the 30 % AOLA dose with an average of 2.86 cm, the appearance of the peel was better with the 30% AOLA dose. Peel weight per plant resulted with high values in T3 with a 20 % AOLA level reaching 168.89 g, and the same treatment resulted better in yield with an average of 19 046.92 kg ha-¹ and a cost benefit of 1.75, followed by T4 with 17 910.69 kg ha^A and a cost benefit of 1.56.

Palavras-chave : Aerobic liquid organic fertilizer (AOLA); pella.

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