Nutrient management and optimized fertilization on selected crops in Liaoning province

The project has been focusing on Nutrient Expert based fertilizer recommendation since 2011

IPNI-2006-CHN-LN6

Nutrient Expert®-based Fertilizer Recommendation for Spring Maize in Liaoning, 2012 This study was conducted to validate Nutrient Expert® (NE)-based fertilizer recommendations for spring maize in farmer fields and compare them with farmer fertilizer practice (FFP). Twenty on-farm experiments were conducted in three different counties in Liaoning province. Read more


Year of initiation:2006
Year of completion:2012

Interpretive Summary

Nutrient Expert®-based Fertilizer Recommendation for Spring Maize in Liaoning, 2012 This study was conducted to validate Nutrient Expert® (NE)-based fertilizer recommendations for spring maize in farmer fields and compare them with farmer fertilizer practice (FFP). Twenty on-farm experiments were conducted in three different counties in Liaoning province.

Nutrient Expert-based Fertilizer Recommendation for Spring Maize in Liaoning, 2011. This study was conducted to validate Nutrient Expert (NE)-based fertilizer recommendations for spring maize in farmer fields and compare them with farmer fertilizer practice (FFP). For this, twenty four (24) on-farm experiments were conducted in four different counties in Liaoning province.

Site-Specific Nutrient Management for Maize in Liaoning, 2010 Six nutrient management treatments on corn were conducted in Gaizhou city, Haicheng city, Shenyang city, Changtu County, Chaoyang County, and Fumeng County, in Liaoning. The treatments included: 1) site-specific nutrient management (SSNM), 2) SSNM-N, 3) SSNM-P, 4) SSNM-K, 5) a check (CK) with no fertilizer applied, and 6) Farmer practice (FP). Results found SSNM to produce the highest yield among all treatments.

A Macronutrient Rate Study for Maize Production in Liaoning, 2009 Field experiments were conducted within the main maize production regions in Liaoning Province in 2009 to determine the range of appropriate rates of N, P, and K required to support maximum economic yields. Field trial sites used for N rate study supported maximum yields of 10. 3 t/ha at Gaizhou using 320 kg N/ha and 9. 4 t/ha at Shenyang using 290 kg N/ha. However, maximum economic yields at these sites were 10. 1 and 9.

Soil Nutrient Management and Balanced Fertilization in Liaoning, 2008 A total of 176 plow layer soil samples were taken from 23 main maize-producing counties in Liaoning Province, covering about 50% of maize production area in the province. Results from soil analysis indicated that all soils were low in N [ammonium (NH4-N) form], 66% of soils were low in available P, 72% were low in available K, and 70% were low in available Zn.

Soil Nutrient Management and Balanced Fertilization in Liaoning, 2007 Experiments of nutrient management and balanced fertilization in Liaoning were carried out on rice, corn, and vegetables in 2007. In rice, the balanced “optimum” (OPT) of 210-90-135 kg N-P2O5-K2O/ha produced the highest yield of 8. 7 t/ha. Treatments omitting N, P, and K produced 40%, 8%, and 24% less yield, respectively.

Fertilizer Management Practice on Rice and Corn in Liaoning, 2006 In 2006, a range of experiments were carried out that focused on nutrient management in rice and corn. Rice yield (and profits) were maximized at 9. 1 t/ha (US$2,011/ha) with the optimum (OPT) treatment of 300-120-180 kg N-P2O5-K2O/ha. This provided 11% more yield than the farmers’ practice (FP) which used 210-105-105 kg N-P2O5-K2O/ha, and 44% more than the unfertilized check.

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Project Leader

Ren Wang, Liaoning Academy of Agricultural Sciences


Project Cooperators

XING Yuehua


IPNI Staff

P. He


Location

Asia \ Eastern Asia \ CHN \ Liaoning


Topics

4r place, 4r rate, 4r time, best management practices

maize

Nitrogen (N), Phosphorus (P), Potassium (K)