SAMPLE SIZE DETERMINATION FOR EVALUATING DRIP IRRIGATION SYSTEMS.

I. Pai Wu, J. M. Irudayaraj

Research output: Contribution to journalConference article

Abstract

An equation for determining emitter flow within a submain unit was derived based on the dimensionless energy gradient curve and energy changes due to slope situations. A computer simulation was made to determine emitter flows along a single lateral line or a submain unit and randomly to pick samples for field evaluation. Simulation results show that the variation of calculated V//T (coefficient of variation of emitter flow) using different sample sizes can be presented by statistical confidence limits for samples from a normal distribution. The distribution of V//T for a fixed sample size is also found to be normally distributed.

Original languageEnglish (US)
JournalPaper - American Society of Agricultural Engineers
StatePublished - Dec 1 1986
Externally publishedYes

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)

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