Efeito de Diferentes Lâminas de Efluente da Suinocultura na Massa Seca da Parte Radicular de Avena strigosa Schreb.

• DOI: https://doi.org/10.22533/at.ed.8351525120610

• Palavras-chave: Forrageira,efluente, irrigação, águas residuárias.

• Keywords: Forage, effluent, irrigation, wastewater.

• Abstract: Black oats (Avena strigosa) stand out as a versatile winter crop, with great relevance in soil protection, crop rotation and as forage. Among the factors that influence its good performance, the development of the root system is fundamental, since it determines the plant's capacity to absorb water and nutrients, especially in conditions of water deficit. In this context, the present study aimed to evaluate the effects of irrigation with swine effluent, applied in different shifts and depths, on the growth and vigor of the root system of black oats, grown in a greenhouse. The experiment was conducted at the Federal University of Pampa – Alegrete/RS Campus, using a completely randomized design, in a two-factor scheme: four irrigation depths (T1 – 100% potable water; T2 – 50% effluent; T3 – 100% effluent; T4 – 200% effluent) and three irrigation shifts (every 2, 4 and 7 days), with four replicates, totaling 48 experimental units. The results showed that treatments with 100% and 200% effluent promoted a more developed root system, with greater accumulation of dry matter, especially under watering every two days. The accumulated evapotranspiration was 283.18 mm throughout the cycle.These data indicate that the rational use of pig farming effluent is capable of meeting the nutritional requirements of black oats, favoring rooting and contributing to a more resilient and productive plant, while offering a sustainable alternative for the reuse of wastewater.