Journal of Food, Agriculture and Environment

Quality control in irrigation and fertigation with cassava processing wastewater into drip system 

Author(s):

Eliane Hermes*, Marcio Antonio Vilas Boas, Simone Damasceno Gomes, Benedito Martins Gomes, Claudia Facini Reis

Recieved Date: 2012-11-29, Accepted Date: 2013-04-22

Abstract:

The objective of this research was to apply techniques of quality control to monitor the uniformity in irrigation and fertigation with cassava processing wastewater through a drip irrigation system. The work was performed at the Agricultural Engineering Experimental Center - NEEA, part of the State University of West Paraná, in the city of Cascavel – Paraná, Brazil. Twenty-five irrigation tests and 25 fertigation tests were performed, in which it was evaluated the coefficient of flow variation (CVQ), of emission uniformity (EU) and Christiansen uniformity (CUC). Subsequently, these coefficients were used to build Shewhart control charts and for the calculation of the process capacity index (Cpl). In the irrigation, the CVQ for all the tests were classified as excellent, the EU presented only one value under 90% and the CUC obtained all the data above this percentage. In the fertigation, the CVQ varied from good to excellent, the EU and the CUC were classified as acceptable to good. The values of Cpl obtained a relation with the uniformity coefficient, in which they were inversely proportional to CVQ and directly proportional to CUC. The use of quality control techniques allowed the evaluation of the system capacity to maintain satisfactory levels of uniformity. 

Keywords:

Control charts, process capacity index, distribution uniformity

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Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 2
Category: Environment
Pages: 841-845

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