Coentro verdão cultivado com diferentes doses de urina de vaca

Abstract

The excrements and biological materials resulting from animal metabolism can be repurposed as organic fertilizers for the soil, providing essential nutrients and enhancing its physical, chemical, and biological characteristics, which benefit the growth and development of cultivated plants. Coriander (Coriandrum sativum L.) is a vegetable plant that responds favorably to the application of organic fertilizers. Widely employed in culinary practices as a seasoning to enhance the flavor and nutritional quality of foods, coriander is also a valuable source of vitamins and minerals, adding nutritional benefits to the diet. The experiment was conducted at the Campus of Engineering and Agricultural Sciences (CECA) of the Federal University of Alagoas (UFAL), located in Rio Largo, Alagoas, Brazil, with the objective of evaluating coriander production under the influence of increasing doses of cow urine. The experimental design used was completely randomized, utilizing a variety of coriander known as "Verdão," subjected to six treatments with fermented cow urine (0, 12, 24, 36, 48, and 60 ml) and five replications. The doses were divided into 4 applications, with the first one administered 19 days after transplanting and the final one performed after 40 days. The parameters evaluated in the production analysis were: Fresh Shoot Mass (FSM); Dry Shoot Mass (DSM); Fresh Root Mass (FRM); and Dry Root Mass (DRM). All data were subjected to analysis of variance and regression. The production results demonstrated that treatments with doses of 36.0 mL of cow urine provided better performance in FRM and DRM, following a decreasing linear equation, with mass reduction as the concentration increased. As for FSM and DSM, they were best represented by a quadratic polynomial model, showcasing the potential of cow urine for the development of "Verdão" coriander. This demonstrates a sustainable alternative for the organic production of this crop. The present study aimed to evaluate, under greenhouse conditions, the development of coriander, cultivar "Verdão," in response to different doses of cow urine as an organic fertilizer.

Key words: Organic fertilization; Nutrition; Biofertilizer; Coriandrum sativum L.