The effect of various sulphur sources on the yield of a major lowland and upland cropping system in Guangxi province, 1997
Sulfur sources such as single superphosphate (SSP), elemental S, ammonium sulfate [(NH4)2SO4] and gypsum were used in rice and corn at a 30 kg/ha rate. In rice, either one-half gypsum and one-half elemental S or SSP alone gave the best yield of 7.58 and 7.4 t/ha, respectively. Yields for the two treatments were 12.6 percent and 10 percent greater than the zero S control. For corn, SSP and gypsum were equally effective, as yields were 9 percent greater than the zero S control. There was no consistent difference in yield between the soluble and less soluble forms of S fertilizer in this study.
GUANGXI-09
