Ammonia Volatilization and Nitrogen Uptake for Conventional and Conservation Tilled Dry-Seeded, Delayed-Flood Rice

In the southern U.S. dry-seeded, delayed-flood rice (Oryza sativa L.) culture system, there are two practices that can aggravate NH3 volatilization losses of urea applied preflood: untimely application of the permanent flood and conservation tillage. The objectives of this study were to determine the influence of tillage practice, N source, and application time on NH3 volatilization, N uptake, and grain yield of delayed flood rice grown on a...