Bull. Spec. CORESTA Congress, Guangzhou 1988, p. 90, A-8.
The effect of source and rate of nitrogen on yield and quality of flue-cured tobacco in China
North Carolina State University, Raleigh, NC, USA
Studies were conducted on flue-cured tobacco in 1985, 86, and 87 in several provinces in China. Rate of nitrogen varied from 0 to 112 kg/ha. Source of nitrogen included 100% nitrate nitrogen, 50% nitrate and 50% ammonium nitrogen, 100% ammonium nitrogen ...