A field trial was conducted to investigate the effect of in-situ moisture conservation structures and application of manures and fertilizers on growth of Acacia auriculiformis in Hegdekatta Watershed area of Uttar Kannada district during 2010–2011. The experiment was laid out in split plot design with moisture conservation structures as a main plot treatments viz., Continuous contour trenches, Ring basin and Half ring basin. Application of Farmyard manures (FYM 5 t/ha), Vermicompost (2.5 t/ha), Poultry manure (1.25 t/ha), Biofertilizers (Mycorriza + Azotobacter + Phosphate solubilizing Bacteria-30 g each/plant) and Recommended Dose of Fertilizers (RDF - NPK 200:100:100) + FYM as a subplot treatments. The results indicated that the maximum wood volume was observed in ring basin with FYM + RDF (55.59 m3/ha), followed by ring basin + poultry manure (52.77 m3/ha) and continuous contour trenches + FYM + RDF (50.90 m3/ha) at 12 months after treatment of Acacia auriculiformis was significantly higher due to ring basin + RDF (45.56 m3/ha) compared to control (17.80 m3/ha).