{"id":5978,"date":"2026-05-23T15:57:57","date_gmt":"2026-05-23T15:57:57","guid":{"rendered":"https:\/\/globalmet.mx\/?p=5978"},"modified":"2026-05-23T16:48:17","modified_gmt":"2026-05-23T16:48:17","slug":"evapotranspiracion-cultivos-riego","status":"publish","type":"post","link":"https:\/\/globalmet.mx\/en\/evapotranspiracion-cultivos-riego\/","title":{"rendered":"Evapotranspiraci\u00f3n"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"5978\" class=\"elementor elementor-5978\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7b604483 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7b604483\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a5fc2e8\" data-id=\"a5fc2e8\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a151943 elementor-widget elementor-widget-heading\" data-id=\"a151943\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Evapotranspiraci\u00f3n: el dato que define cu\u00e1nta agua necesita tu cultivo hoy,\nno la semana pasada<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5975a092 elementor-widget elementor-widget-text-editor\" data-id=\"5975a092\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Existe un error que se repite en miles de predios agr\u00edcolas de Chile y M\u00e9xico, y cuesta una<br>cantidad enorme de dinero al a\u00f1o: regar seg\u00fan el calendario en lugar de regar seg\u00fan lo que<br>el clima dice que la planta necesita hoy.<\/p><p><br>La evapotranspiraci\u00f3n de referencia (ET\u2080) es la cantidad de agua que pierde una superficie<br>vegetal de referencia hacia la atm\u00f3sfera en un per\u00edodo de tiempo dado. Depende de cuatro<br>variables: temperatura del aire, humedad relativa, velocidad del viento y radiaci\u00f3n solar.<br>Todas cambian cada d\u00eda. Algunas cambian cada hora. Por eso, la demanda h\u00eddrica de un<br>cultivo no es igual el lunes que el jueves, ni en diciembre que en enero, ni en un d\u00eda soleado<br>que en un d\u00eda con nublado.<\/p><p><br>Cuando un productor riega seg\u00fan un programa fijo \u2014&#8221;tres horas de goteo lunes, mi\u00e9rcoles y<br>viernes&#8221;\u2014 est\u00e1 tomando una decisi\u00f3n de riego basada en promedio, no en realidad. En d\u00edas<br>de alta demanda (calor, viento, baja humedad), esas tres horas son insuficientes y el cultivo<br>entra en estr\u00e9s h\u00eddrico silencioso. En d\u00edas de baja demanda, es agua y energ\u00eda<br>desperdiciadas.<\/p><p><br>Los meteor\u00f3logos expertos de Globalmet calculan la evapotranspiraci\u00f3n de cultivos (ETc) en<br>tiempo real, multiplicando la ET\u2080 medida por la estaci\u00f3n meteorol\u00f3gica agr\u00edcola del predio<br>por el coeficiente de cultivo (Kc) correspondiente a la etapa fenol\u00f3gica actual. El resultado<br>es la l\u00e1mina diaria exacta que necesita ese cultivo, en esa parcela, en ese d\u00eda espec\u00edfico.<br>Los datos de campo son consistentes: predios que adoptan el riego por evapotranspiraci\u00f3n<br>reducen su consumo h\u00eddrico entre 15% y 35% respecto a su l\u00ednea base, sin afectar<br>rendimiento y con frecuencia mejorando el calibre de la fruta al eliminar los ciclos de estr\u00e9s<br>y sobre-riego que afectan la uniformidad del llenado.<\/p><p><br>En t\u00e9rminos econ\u00f3micos, la reducci\u00f3n del consumo h\u00eddrico significa menos horas de<br>bombeo, lo que se traduce directamente en ahorro de energ\u00eda el\u00e9ctrica. En un predio de<br>palto de 50 hect\u00e1reas con riego presurizado, reducir un 20% el tiempo de bombeo puede<br>representar entre 2 y 4 millones de pesos chilenos al a\u00f1o solo en electricidad. Ese ahorro<br>paga una estaci\u00f3n agrometeorol\u00f3gica en pocos meses.<br>El sensor de temperatura y humedad de la estaci\u00f3n meteorol\u00f3gica agr\u00edcola de Globalmet<br>alimenta el modelo de ET en tiempo real, 24 horas al d\u00eda. El pron\u00f3stico meteorol\u00f3gico<br>agr\u00edcola para los siguientes siete d\u00edas permite adem\u00e1s anticipar la demanda h\u00eddrica de la<br>semana, programar el riego con d\u00edas de anticipaci\u00f3n y ajustar turnos de agua en sistemas<br>de riego compartido.<\/p><p><br>La evapotranspiraci\u00f3n no es un concepto acad\u00e9mico. Es el n\u00famero que, medido<br>correctamente, devuelve al productor el control real sobre su mayor costo operativo<br>despu\u00e9s de la mano de obra.<\/p><p><br>Regar seg\u00fan el clima que hay, no seg\u00fan el calendario que conviene, es la diferencia m\u00e1s<br>rentable que existe en la gesti\u00f3n h\u00eddrica agr\u00edcola.<\/p>\n<p><!-- \/wp:paragraph --><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>El dato que define cu\u00e1nta agua necesita tu cultivo hoy, no la semana pasada<\/p>","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-5978","post","type-post","status-publish","format-standard","hentry","category-nuestras-experiencias"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.8.1 - 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