Nutrient management and balanced fertilization in Xinjiang
IPNI-2006-CHN-XJ2
29 Jan 2008
2007 Annual Interpretive Summary
Nutrient Management and Balanced Fertilization in Xinjiang, 2007
Experiments and demonstrations of nutrient management and balanced fertilization in Xinjiang were conducted on processing tomato, cotton, and watermelon in Manasi County, as well as corn in Changji City.
Experiments on processing tomato found application of 270-150-150 kg N-P2O5-K2O/ha could produce 27.9 t/ha, 20.5 t/ha, and 13.0 t/ha, or 16 to 44% more yield and US$465 to US$1,036/ha more income, than the - N, - P, and - K treatments, respectively. Lycopene also increased by 30%, 97%, or 145%, respectively, with application of N, P, or K. The field demonstration at the Toutunhe farm showed that 90 kg K2O/ha, along with 180 kg N/ha and 105 kg P2O5/ha could produce 19% more fruit yield than the farmer practice which excluded K.
Experiments on cotton found 180-105-60 kg/ha increased cotton lint yield by 18% (252 kg/ha), 16% (233 kg/ha), 10% (148 kg/ha) and economic benefit by US$392, US$378, and US$256/ha compared with the - N, - P, and - K treatments, respectively. Field demonstrations also showed that balanced fertilization increased cotton yield by 7% in Awati County and by 20% in Manasi County compared with farmer practice.
A set of omission plot treatments were applied to corn based on a complete NPK treatment of 210-105-75 kg/ha. Individual addition of N, P, and K fertilizer produced 8%, 19%, and 8% more yield, respectively. The corresponding profits derived from N, P, and K were US$65/ha, US$306/ha, and US$130/ha.
The K rate trials in watermelon found 45, 90, 180, 270 kg K2O/ha, along with 135 kg N/ha and 105 kg P2O5/ha could produce 12%, 17%, 20%, and 22% more yield---or US$433, US$589, US$637, and US$667/ha more income compared to the - K treatment. Xinjiang-NMBF