Resumo

LEGUA CARDENAS, José Antonio et al. Fertilization of cabbage ( Brassica oleracea L.) in an organic farming application using compost. Rev. Inv. Cs. Agro. y Vet. [online]. 2024, vol.8, n.23, pp.508-519.  Epub 02-Maio-2024. ISSN 2664-0902.  https://doi.org/10.33996/revistaalfa.v8i23.282.

By-products in the production of sugar and alcohol, such as bagasse and vinasse, are mostly not put to good use without causing air and/or soil pollution. For instance, bagasse is used as fuel for boilers in some sugar mills. The cultivation of cabbage (Brassica oleracea L.) was experimented with by fertilizing it with compost made from bagasse, vinasse, dry grass, and guinea pig manure, replacing chemical fertilizers and reducing soil pollution. The objective was to evaluate the effect of a fertilizer on the growth of cabbage plants and on the chemical analysis and stomatal microscopy of cabbage leaves. The influence of the fertilizer on the morphometric variables of cabbage was also determined: 1) height, weight, equatorial diameter, and yield; 2) length and weight of the roots. A completely randomized block design was used, consisting of three blocks and five treatments, which were T1 = 0, T2 = 8000, T3 = 10000, T4 = 12000, and T5 = 14000 (kg ha-1) applied 10 days after transplanting. Data were processed using analysis of variance and Tukey's test, whose results determined that T5 stood out in yield with 36.09 t ha-1, root weight with 76.16 g, and cabbage weight with 821.23 g. Regarding foliar chemical analysis, T5 stood out in phosphorus, potassium, calcium, boron, and in stomatal analysis, T4 with 642.86 stomata mm-2. It is concluded that the higher dose of compost corresponding to treatment T5 resulted in an increase in biomass and yield of cabbage, differing by 8.09%, higher than that obtained in relation to the control treatment.

Palavras-chave : Brassica oleracea L.; Organic fertilizer; Stomatal density; Yield.

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