Search Results
Abstract
Slow-release N sources (sewage sludge, Agriform, Osmocote, sulfur-coated urea (SCU) and isobutylidene diurea (IBDU)) and a soluble N source (ammonium sulfate) were applied to soil at the rates of 224 and 448 kg N/ha before planting bermudagrass (Cynodon magenisii Hurcombe cv. Sunturf). Yield, % N, and N recovery at 3 cuttings at 30 day intervals were significantly higher at the 448 kg/ha rate than at the 224 kg/ha rate and were highest in the first of 3 cuttings and decreased significantly in the second and final cuttings. The slow-release N sources, except Agriform, generally gave higher yield, % N, and N recovery values than ammonium sulfate, especially at the third cutting and at the higher N rate. Osmocote, SCU and IBDU generally gave higher values than sewage sludge and Agriform.