Reduced fertilizer rates enhanced yields of vegetables grown on fertilizers overdosed vegetable soils in Yunnan

IPNI-2008-CHN-YN11

Cucumber Yield, Nutrient Use Efficiency, Economic Returns and Soil Phosphorus Forms as Affected by Fertilization and Irrigation Systems in Yunnan, 2011 This ongoing study initiated in 2010 continued to investigate the effects of different fertilizer practices on yield, economic return, and nutrient use efficiency of cucumber, one of the most commonly grown vegetables in Yunnan. The goal was to determine optimal fertilizer rates for cucumber production in the region. Read more


Year of initiation:2008
Year of completion:2011

Interpretive Summary

Cucumber Yield, Nutrient Use Efficiency, Economic Returns and Soil Phosphorus Forms as Affected by Fertilization and Irrigation Systems in Yunnan, 2011 This ongoing study initiated in 2010 continued to investigate the effects of different fertilizer practices on yield, economic return, and nutrient use efficiency of cucumber, one of the most commonly grown vegetables in Yunnan. The goal was to determine optimal fertilizer rates for cucumber production in the region.

Cucumber Yield, Nutrient Use Efficiency, Economic Returns, and Soil Phosphorus Forms as Affected by Fertilization and Irrigation Systems in Yunnan, 2010 Over-fertilization is a common problem in vegetable production in Yunnan. This fertilizer practice inevitably leads to a high input cost, low fertilizer use efficiency, enhanced nutrient losses to the environment, and often reduced crop yield and/or quality.

Improved Nutrient Management to Reduce Run-off Losses from the Commercial Floral Production Surrounding Dianchi Lake in Yunnan, 2009 A huge commercial floral production base has developed around the Dianchi Lake over the past 10 years, and it has flourished due to good climate and geographic location. High profitability has stimulated the use of all crop inputs and has especially resulted in over-application of fertilizers.

Reduced Fertilizer Rates Enhanced Vegetable Yields in Yunnan, 2008 Dianchi Lake, near Kuming City, was once a pristine, 300 km2 water body. However, over the past two decades the quality of this lake has fallen due to pollution, mainly caused by sewage sludge discharge into the lake from the surrounding phosphate industry and urban residences.

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Project Leader

Hong Lifang, Yunnan Academy of Agricultural Sciences


Project Cooperators

Fu Libo


IPNI Staff

Shihua Tu


Location

Asia \ Eastern Asia \ CHN \ Yunnan


Topics

4r rate, balanced nutrition, nutrient use efficiency

vegetable

Nitrogen (N), Potassium (K)