Irrigation system evaluation by keller and karmeli and by denículi methodologies, in citrus by drip irrigation

For an adjusted irrigation the determination of the uniformity of water distribution is necessary. The same one must be carried through frequently as form to guarantee the irrigation quality. In field works, there is a consensus of measures for four lateral lines, but there are also doubts related to the number of necessary measures inside of a same lateral line, being recommended four measures (Keller and Karmeli, 1974 Method) and eight (Denículi et al., 1980 Method). This work was done in the Irrigation District of Baixo Acaraú (DIBAU), in November of 2010 and had as objective to make a study of the evaluation of a irrigation system for dripping in citrus, with the measurement of 16 (Keller and Karmeli, 1974 Method) and 32 (Denículi et al., 1980 Method) drips. The evaluation was done from data gotten for the application of the two methods, being used as reference for the evaluation, the respective distribution uniformity coefficients (CUD) calculated on the basis of the outflows census of the installed drips.