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China: major limiting factors for rice production

Yield increase follows foliar spray with Multi-K indicates that Potassium is one of the major limiting factor for higher crop productivity


Rice/ Quality hybrid

Country / locationChina / Guangxi province, southern China
ObjectivesFind the major limiting factor for rice production among the following: micronutrients, growth substances, & potassium. Multi-K, MKP
Haifa product testedMulti-K
Application methodFoliar nutrition
Tested treatment2 x Foliar feeding @ 4% Multi-K & 600 lit./Ha
Control treatment resultsYield = 4529 Kg/Ha
Best treatment resultsYield = 5241 Kg/Ha
Characteristics of best treatmentYield increase:  712 Kg/Ha (15.8% above control)
Grower’s revenue from yield: 157 US$/MT
Cost of treatment (application + material) 22 US$/Ha
Net benefit of best treatment112 US$/Ha
Benefit/Cost ratio5.1
ConclusionsLocal: Potassium was found to be the major limiting factor for good yields, under the prevailing conditions.
ReferenceS. Peng & S&F Institute, Guangxi AAS


Need more information about growing rice? You can always return to the rice fertilizer & rice crop guide table of contents