Efeito da peletização de semente e urina de vaca na produção de mudas de maracujá amarelo

Abstract

The production of seedlings is a practice of extreme economic importance and requires management that guarantees the quality of the seedlings. In this context, the objective of this experiment is to evaluate the influence of the use of different binding materials in seed pelleting and the application of doses of cow urine on the development of yellow passion fruit seedlings. Two experiments were installed with the production of yellow passion fruit seedlings. These were conducted in a nursery in the Fruit Growing sector of IFPE - Campus Barreiros, located in the municipality of Barreiros, PE. The experiments were carried out in a completely randomized design (DIC), with five replications. The first experiment with six treatments that are the binders used in pelletization (T1 - Control; T2 - Rock dust; T3 - Limestone; T4 - Natural phosphate; T5 - Coffee grounds and T6 - Ash). And, the second experiment in a 2x3 factorial scheme (with and without pelleting, and 0, 50 and 100% cow urine), totaling six treatments. Each experimental plot consisted of 5 plants, with a total of 120 plants. Seed treatment and sowing took place on November 22, 2021, seedling emergence began around five days after sowing and seedling analysis occurred 55 days after sowing. The parameters evaluated were: emergence speed index, emergence percentage, emergence speed, plant height (cm), stem diameter (mm), number of leaves, root length (cm), fresh mass (g) and dryness (g) of the aerial part and root. According to the results obtained, it is concluded that within the binding material factor, natural phosphate was superior in the variable plant height (At), dry mass of roots (MFR), fresh mass of the shoot (MFPA), dry mass of aerial part (MSPA) when compared to the other treatments, however in the other variables analyzed in this experiment, no significant differences were obtained. In the pelleting and cow urine experiment, the urine (50%) and urine (100%) treatments were superior in relation to the control. It was observed that in the variable emergence speed (VE) they obtained a positive result, with no significant difference in terms of treatments with and without pelleting in the analyzed variable, for the other variables there was no significant difference.