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Soil Nutrition Management for Sustainable Agriculture in Shaanxi

IPNI-2002-CHN-SN6

Overview Related

Effect of Potash on Yield and Quality of Apple, Grape, and Kiwifruit in Shaanxi, 2005 Apple, grape, and kiwi are important traditional economic crops in Shaanxi. Yields and quality have traditionally been poor because of improper nutrient management. Many farmers apply too much nitrogen (N) and too little potassium (K). Three orchards were selected from Heyang and Fufeng counties to study effect of N, phosphorus (P), and K on these three crops. Read more

Year of initiation:2002
Year of completion:2005

Interpretive Summary

2005

Effect of Potash on Yield and Quality of Apple, Grape, and Kiwifruit in Shaanxi, 2005 Apple, grape, and kiwi are important traditional economic crops in Shaanxi. Yields and quality have traditionally been poor because of improper nutrient management. Many farmers apply too much nitrogen (N) and too little potassium (K). Three orchards were selected from Heyang and Fufeng counties to study effect of N, phosphorus (P), and K on these three crops.

2004
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Soil Nutrition Management for Sustainable Agriculture in Shaanxi, 2004 The apple production area in Shaanxi Province has surpassed 369,000 ha at present and now accounts for 18% of China's total area. In addition, kiwi fruit and grape production is also growing on the Loess Plateau Region of Shaanxi. In most cases, fertilizer application in these orchards is imbalanced as nitrogen (N) is in surplus and potassium (K) is inadequate.

2003

Soil Nutrition Management for Sustainable Agriculture in Shaanxi, 2003 Apple, grape, kiwi fruit, and hot pepper provide the main source of income for thousands of farmers in Shaanxi, with respective planted areas of 369,000 ha, 15,000 ha, 11,000 ha, and 20,000 ha. Potassium (K) fertilizer field experiments were carried out for apple in Heyang County, as well as for grape, kiwi fruit, and hot pepper in Fufeng County. Both sites are located in the loess plateau and regarded as ‘K-rich’.

2002

Soil Nutrition Management for Sustainable Agriculture in Shaanxi Province, 2002. Field experiments were conducted for the major cash crops (grape, apple, and chili pepper) in Fufeng and Heyang, Shaanxi. Application of phosphorus (P) and potassium (K) increased grape yield by 4 and 12%, respectively. Grape quality was influenced more by K than P fertilizer; specifically vitamin C concentration increased by 3. 1 mg/kg and sugar content by 12 to 16%.

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Project Leader

Yanan Tong, Soil and Fertilizer Institute, Shaanxi Academy of Agricultural Sciences

Project Cooperators

Yimin Gao

IPNI Staff

S. Li

Location

Asia \ Eastern Asia \ CHN \ Shaanxi

Topics

nutrient management

apple, grape, kiwi

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