Balanced Fertilization for High Yield and Fertilization Efficiency on Lettuce and Sesame in Anhui
English
IPNI-2006-CHN-AH16
31 Jan 2007
2006 Annual Interpretive Summary
Balanced Fertilization for High Yield and Fertilization Efficiency on Lettuce and Sesame in Anhui, 2006
In 2006, the Soil and Fertilizer Institute of Anhui implemented seven field trials to study balanced fertilization specific to sesame and Guoyang lettuce. In recent years, yield and quality for these two crops has declined. Sesame is a major oil crop in Anhui Province, presently covering over 160,000 ha. The provincial area planted to Guoyang lettuce, a leaf-tip variety used for the specialty product called Taigan, is estimated at 20,000 ha.
Results are available from sesame field trials which examined various rate combinations of N and K. Sesame yields quickly reached a yield maximum under N only fertilization. The best balance between N and K appeared to occur under the 150-150 kg N-K2O/ha combination, which produced a high yield of 1,218 kg/ha. One specific sesame trial at Huaibei produced 574 kg/ha with a balanced treatment of 150-90-150 kg N-P2O5-K2O/ha. A further 9% more yield was possible with the addition of boron (B). The expected yield loss at Huaibei due to nutrient omission was -19.6% without N, -5.5% without P, and -10.9% without K. Anhui-16