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Main Author:	Arturo Díaz-Franco
Format:	Artículo científico
Language:	es
Published:	Universidad Autónoma Chapingo 2017
Subjects:	Agrociencias rendimiento Intraradices rentabilidad Sorghum bicolor
Online Access:	https://www.redalyc.org/articulo.oa?id=455552312003
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Características de planta y productividad de sorgo con dosis de micorriza arbuscular en Tamaulipas Arturo Díaz-Franco Florencia Alejandro-Allende Flor Elena Ortiz-Cháirez Agrociencias rendimiento Intraradices rentabilidad Sorghum bicolor La inoculación de la semilla de sorgo con el HMA Rhizophagus intraradices (micorriza INIFAP) tiene un impacto positivo en la productividad agrícola en las condiciones áridas y semiáridas del estado de Tamaulipas. L as dosis utilizadas por el productor son heterogéneas, lo que puede traer consigo una práctica ineficiente. E l objetivo del trabajo fue evaluar la efectividad y rentabilidad de la producción de sorgo inoculado a diferentes dosis de micorriza INIFAP, comparado con el testigo o el del productor. Tres parcelas experimentales de sorgo (1-2 ha) se establecieron en terrenos de productores de diferentes localidades. La semilla utilizada (7-8 kg∙ha -1 ) se inoculó con micorriza INIFAP a dosis de 250, 500 y 750 g · ha -1 . Las variables índice de clorofila (SPAD), biomasas foliar y radical, longitud de la panoja, rendimiento y costo -beneficio fueron estimadas. Los valores de las variables de planta, rendimiento y rentabilidad de sorgo fueron mayores cuando se inocularon las semillas de sorgo que en los casos testigo. Los resultados indican que la inoculación con micorriza INIFAP en dosis de 500 g∙ha -1 conlleva a maximizar el rendimiento de grano de sorgo y la relación costo-beneficio. 2017 artículo científico 2007-526X https://www.redalyc.org/articulo.oa?id=455552312003 es http://www.redalyc.org/revista.oa?id=4555 Revista Chapingo Serie Zonas Áridas application/pdf Universidad Autónoma Chapingo Revista Chapingo Serie Zonas Áridas (México) Num.1 Vol.XVI

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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