Balanced Fertilization for High Yield and Fertilization Efficiency on Lettuce and Sesame in Anhui
English
IPNI-2006-CHN-AH16
15 Feb 2008
2007 Annual Interpretive Summary
Balanced Fertilization for High Yield and Quality of Sesame in Anhui, 2007
Sesame is one of the main oil-bearing crops in Anhui Province, with over 160,000 ha planted in the Province. Balanced fertilization (BF) field trials were established by the Soil and Fertilizer Institute, Anhui Academy of Agricultural Sciences, in 2007 in order to improve nutrient management of the crop.
Balanced application of K fertilizer increased sesame yield and farm income in Bianzhuang Village, Linquan County. Sesame yields increased from a range between 1,373 to 1,517 kg/ha under treatments supplying zero K, to the range of 1,497 to 1,686 kg/ha with 75 kg K2O/ha. Yields increased to between 1,536 to 1,745 kg/ha with 150 kg K2O/ha, and to 1,725 kg/ha with 225 kg K2O/ha. Yields also responded to higher rates of N application. Yields improved from 1,373 to 1,536 kg/ha under zero N, and to 1,517 to 1,745 kg/ha under 100 kg N/ha. No further yield gains were obtained by increasing N application rates to 150 kg/ha. Results from Jiqiao Village were similar to those obtained at Bianzhuang. Sesame yield increased from a range between 946 to 1,042 kg/ha under zero K treatments, and to between 1,059 to 1,172 kg/ha under 75 kg K2O/ha. Yields increased to between 1,068 to 1,215 kg/ha under 150 kg K2O/ha, and to 1,146 kg/ha with 225 kg K2O/ha. The application of K fertilizer increased net profit by US$153 to US$260/ha, compared with the control treatment.
A BF field trial at Huaibei showed that omission of N, P, K, or NPK from the “optimum” (OPT) treatment of 150-90-150 kg N-P2O5-K2O/ha resulted in 1,356 kg/ha, 1,581 kg/ha, 1,551 kg/ha, and 1,253 kg/ha less seed yield, respectively. The OPT produced a yield of 1,733 kg/ha. Further application of 15 kg borax (B)/ha resulted in a highest yield of 1,759 kg/ha. Anhui-16