%0 Journal Article
%T Comportamiento hidr芍ulico de dos tipos de emisores artesanales para riego por goteo a baja presi車n Hydraulic performance of two types of artisan emitters for low pressure drip irrigation
%A Lisette Gruber
%A Divia Blanco
%A Eugenio Rojo
%J Bioagro
%D 2007
%I Decanato de Agronom赤a de la Universidad Centroccidental
%X RESUMEN El riego por goteo artesanal se basa en la elaboraci車n dom谷stica de emisores y el aprovechamiento de peque as alturas de carga para sustituir el uso motobombas. Por ser un riego no convencional, no se dispone de suficientes elementos t谷cnicos hidr芍ulicos que lo respalden. Se realiz車 un ensayo para determinar el coeficiente de uniformidad (CU) para diferentes presiones, el coeficiente de variaci車n de fabricaci車n (CV), la ecuaci車n caudal vs. altura de carga, y el r谷gimen de circulaci車n de dos tipos de emisores fabricados manualmente. Los tipos de goteros denominados EA se fabricaron con cinta pl芍stica (※mimbre§) y los goteros EB con tuber赤as utilizadas en riego de microaspersi車n. Se encontr車 que ambos goteros exhibieron r谷gimen turbulento de circulaci車n. En promedio, los goteros EA presentaron 88,0 % CU y 0,16 CV mientras que en EB los valores fueron 90,9 % y 0,12, respectivamente, detect芍ndose diferencias significativas (P≒0,01) para ambos coeficientes. Los resultados demuestran que, en general, existe superioridad de los goteros EB sobre los EA ABSTRACT The irrigation system by artisan dripping is based on the elaboration of the emitters by the own farmer, and the use of low elevation heads to replace the utilization of water pumps. Being a non-conventional irrigation system, there are no sufficient technical elements to endorse it. A test was made to determine the uniformity coefficient (UC) of the emitters for different pressures, the coefficient of variation of manufacture (CV), the equation of flow rate vs. pressure head, and the dripper circulation regime. One type of emitter (EA) was made with flat pipes of "wicker" and the other type (EB) with the pipes commonly used in micro-sprinkler systems. It was found that both emitters had turbulent flow regime. As an average, emitters EA showed 88.0 % UC and 0.16 CV while emitters EB showed 90.9 % and 0.12 CV, respectively, being the differences statistically significant (P≒0.01). It was concluded that emitters EB have better performance than emitters EA
%K Riego
%K r谷gimen hidr芍ulico
%K uniformidad de distribuci車n del agua
%K Irrigation
%K hydraulic regime
%K uniformity of water distribution
%U http://wwww.scielo.org.ve/scielo.php?script=sci_arttext&pid=S1316-33612007000200003