With the occurrence of prolonged droughts in the Brazilian semi-arid region, water scarcity directly influences agriculture in this region, so that water reuse and bovine manure application become a viable alternative for pepper production. In this context, the present study aimed to evaluate the sustainable production of chili peppers (Capsicum frutescens) under levels of irrigation with treated wastewater and doses of bovine manure. The following bovine manure doses were considered: D1 (0% manure and 100% soil), D2 (10% manure and 90% soil), D3 (20% manure and 80% soil), D4 (30% manure and 70% soil), D5 (40% manure and 60% soil) and D6 (50% manure and 50% soil), based on volume. Three levels of irrigation were applied, based on the water requirement of the crop (WR), namely: 100% WR (L1), 75% WR (L2) and 50% WR (L3). Production variables and physical characteristics of the produced peppers were evaluated. Pepper production (g plant-1) increased as 10% of bovine manure were added in substrate composition. Increasing concentration of bovine manure and using 50% WR provided favorable conditions for the organic production of chili pepper.

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In areas with water scarcity, recycled water and cow manure in organic substrate makes the cultivation of peppers possible, supplying water and nutrition to pepper. The present research was conducted to evaluate the effect of cattle manure doses and levels of irrigation using wastewater on pepper cultivation (Capsicum frutescens L.). The treatments include: three replacement levels of wastewater treated, based on the need of water culture (NWC): 100% NWC (LI1), 75% NWC (LI2) and 50% NWC (LI3); they were combined with six doses of cattle manure tanned: D1 (0% manure and 100% soil), D2 (10% manure and 90% soil), D3 (20% manure and 80% soil), D4 (30% manure and 70% soil), D5 (40% manure and 60% soil) and D6 (50% manure and 50% soil) based on volume. Growth parameters evaluated were plant height, stem diameter, number of leaves and leaf area, from 45 days after sowing (DAS). At 150 DAS the peppers irrigated with 50% NWC had mean of 40.9 cm (plant height). The increment in 10% of manure showed there is an increase of more than 10% in the average value of the variables studied.