Análises de variedades da alface submetidas a doses de urina de vaca

Abstract

Lettuce (Lactuca sativa L.) is a vegetable that stands out among the most economically important hardwoods in the country, considering a planted area of approximately 90,000 hectares. According to the United Nations, the world population in 2024 will exceed 8 billion people, requiring a greater supply of organic and healthy food in a consortium with a conscious management, using organic compounds in nutrition of plants. The objective of this work was to evaluate the performance of 7 lettuce varieties submitted to the application of the biofertilizer cow urine, grown in pots. The experiment was carried out at the Agrarian Sciences Center of the Federal University of Alagoas (CECA / UFAL), with a completely randomized experimental design, in a 7 x 2 factorial scheme, with 5 replicates, 7 varieties: Cerbiatta; Giovana; Monica; Simpson; Itapuã; Veneranda and Vitória with and without cow urine (0 and 60 mL). Six weekly analyzes were carried out after the transplanting of the seedlings, the variables analyzed were leaf number (NF), plant height (ALT) and mean diameter (DM), after harvesting the fresh mass of the shoot was evaluated, Aerial Dry Pasta, Fresh Root Pasta, and Dry Root Pasta. The results showed that for the best performance ALT, NF and DM, the varieties were Cerbiatta, Vitória and Giovana, respectively. The variables MFA and MSA presented the Cerbiatta variety with higher yield in weight gain, standing out among the other varieties, besides presenting better results for MFR and MSR. According to the data obtained, cow urine positively influenced MFA and MSA, which demonstrates the importance of the biofertilizer in the culture.