Cattle manure application strategies effects on bahiagrass yield, nutritive value, and phosphorus recovery.

摘要: ABSTRACT Animal manure application based on crop N requirements oft en leaves excess P in the soil because of diff erences N/P ratio manures and that required by plants. Th is experiment was designed to evaluate eff ects cattle ( Bos taurus ) applied alone or combination with ammonium nitrate (AN) bahiagrass Paspalum notatum Flugge) dry matter (DM) yield, nutritive value, tissue concentration recovery, concentrations. Treatments consisted a control, two rates (200 400 kg ha –1 ), sources [manure plus AN (50/50% combination)], frequencies (single vs. split). Bahiagrass harvested at 28-d intervals evaluated for DM crude protein concentrat ion (CP), vitro digestible organic (IVDOM), concentration. Soil samples were analyzed Mehlich-1 extract-able P. recovery greater treatments when compared control alone. Although increased yield CP, reduced as rate increased. Approximately 20 53% recovered AN, respectively. Soil-test (0–15 cm depth) receiving treatments. Our results demonstrated applying an inorganic source can increase forage value while reducing risks accumulation.