Cebolinha verde submetida a diferentes doses de urina de vaca

Abstract

The waste produced by animals can be used as organic fertilizer for plants. The green onion (Allium fistulosum L.) is a vegetable that responds well to the application of organic fertilizers, is commonly used in cooking as a condiment to improve the flavor and nutritional quality of food, being an excellent source of vitamins and minerals. The experiment was carried out at the Campus of Engineering and Agrarian Sciences (CECA) of the Federal University of Alagoas (UFAL), located in Rio Largo, Alagoas, Brazil, aiming to evaluate the development of green onion under the effect of increasing doses of cow urine (UV). The design used was the completely randomized (DIC) using a variety of chives All Year Evergreen-Nebuka submitted to six treatments with fermented cow urine (0, 26, 52, 78, 104 and 130 ml) and six replications. The doses were fractionated into thirteen applications, with the first part made every 5 days and after 30 days it was changed to every 4 days until the end of the treatments. The parameters evaluated in the growth analysis were: Plant Height (AP); Base Diameter (DB); and Number of Sheets (NF). In the analysis of production were evaluated: Green Mass of the Aerial Part (MVPA); Dry Mass of the Aerial Part (MSPA); Fresh Mass of the Root (MFR); and Dry Mass of the Root (MSR). All data were submitted to analysis of variance and regression study. The results in the growth analysis showed that the treatments with doses of 78.0 ml of UV provided better performances in AP, DB and NP, presenting a quadratic polynomial regression equation. In the production analyzes, MVPA and MSPA presented results like those found in the growth analysis, while in MFR and MSR the equation had a decreasing linear effect, with a reduction in mass as the UV concentration increased. The work demonstrates the potential of cow urine for the development of green onions, making it a sustainable alternative for organic production of this crop.

Key words: Organic fertilization, Allium fistulosum L., Biofertilizer.