Gaziosmanpaşa Üniversitesi Ziraat Fakültesi Dergisi, cilt.40, sa.2, ss.72-85, 2024 (Hakemli Dergi)
Soil physical-hydraulic properties affected by organic matter developed by recycled wastewater (RWW) irrigation, can be further enhanced with different irrigation amounts and tillage practices. The effect of increased organic matter was determined after a two-year experimental study carried out on a silage maize field irrigated at varying irrigation water levels of RWW and freshwater (FW) with direct sowing (DS) compared to conventional tillage (CT). Bulk density was less 1.5% in 100% irrigation with RWW compared to FW, while porosity, aggregate stability, field capacity, wilting point and available water were significantly higher by 1.9%, 12.0%, 2.8%, 2.2% and 3.6%, respectively. Bulk density, aggregate stability, field capacity, wilting point and available water were 1.5, 4.3, 3.3, 2.2, and 4.2 % were significantly higher in DS according to CT, respectively, while porosity was 1.5% lower. The positive effects can be attributed to the RWW irrigation under DS due to the organic matter content in DS which was 1.1% higher than with CT, while RWW increased the organic matter content by 17.0% according to FW between full irrigations. It could be concluded that 100% irrigation using RWW under DS can be a practical approach to improve the physical-hydraulic properties of the silage maize field.