Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/1f/c3/1fc3c933801590c2aec8331b065c7b6fc15e40d6): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/7a/85/7a857ff73246a85b8d4012aabf6a6e01f9173721): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/f6/1e/f61e9155f89ac6f8f903842f6186d3c2b0533354): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/f6/1e/f61e9155f89ac6f8f903842f6186d3c2b0533354): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/b8/f3/b8f301812977bbc59dad1b8d1897f415061f1266): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/b8/f3/b8f301812977bbc59dad1b8d1897f415061f1266): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/4f/58/4f5830c10c00fffecb2e6124d1df5d2163673d93): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/4f/58/4f5830c10c00fffecb2e6124d1df5d2163673d93): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/4f/58/4f5830c10c00fffecb2e6124d1df5d2163673d93): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/4f/58/4f5830c10c00fffecb2e6124d1df5d2163673d93): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/b8/f3/b8f301812977bbc59dad1b8d1897f415061f1266): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/b8/f3/b8f301812977bbc59dad1b8d1897f415061f1266): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/b8/f3/b8f301812977bbc59dad1b8d1897f415061f1266): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/b8/f3/b8f301812977bbc59dad1b8d1897f415061f1266): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/b8/f3/b8f301812977bbc59dad1b8d1897f415061f1266): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/b8/f3/b8f301812977bbc59dad1b8d1897f415061f1266): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/b8/f3/b8f301812977bbc59dad1b8d1897f415061f1266): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204

Warning: file_put_contents(/home/ppmj/public_html/cache/opcache/b8/f3/b8f301812977bbc59dad1b8d1897f415061f1266): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 204
“Insecticidal effect of lemongrass oil on behavioural responses and biochemical changes in cowpea weevil, Callosobruchus maculatus (Fabricius)” (2020) Journal of Phytopathology and Disease Management, 7(1), pp. 14–30. Available at: https://www.ppmj.net/index.php/ppdj/article/view/189 (Accessed: 8 August 2026).

Warning: fopen(/home/ppmj/public_html/cache/opcache/f1/d0/f1d023de2d739c7f72fdd63066213d9814d752d6): Failed to open stream: Disk quota exceeded in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/LockableFile.php on line 69

Fatal error: Uncaught TypeError: flock(): Argument #1 ($stream) must be of type resource, bool given in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/LockableFile.php:153 Stack trace: #0 /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/LockableFile.php(153): flock() #1 /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Cache/FileStore.php(111): Illuminate\Filesystem\LockableFile->getExclusiveLock() #2 /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Cache/FileLock.php(14): Illuminate\Cache\FileStore->add() #3 /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Cache/Lock.php(91): Illuminate\Cache\FileLock->acquire() #4 /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Console/Scheduling/CacheEventMutex.php(66): Illuminate\Cache\Lock->get() #5 /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Console/Scheduling/ManagesAttributes.php(152): Illuminate\Console\Scheduling\CacheEventMutex->exists() #6 /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(36): Illuminate\Console\Scheduling\Event->Illuminate\Console\Scheduling\{closure}() #7 /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Container/Util.php(43): Illuminate\Container\BoundMethod::Illuminate\Container\{closure}() #8 /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(83): Illuminate\Container\Util::unwrapIfClosure() #9 /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(35): Illuminate\Container\BoundMethod::callBoundMethod() #10 /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Container/Container.php(696): Illuminate\Container\BoundMethod::call() #11 /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Console/Scheduling/Event.php(334): Illuminate\Container\Container->call() #12 /home/ppmj/public_html/lib/pkp/classes/scheduledTask/ScheduleTaskRunner.php(65): Illuminate\Console\Scheduling\Event->filtersPass() #13 /home/ppmj/public_html/lib/pkp/classes/scheduledTask/PKPScheduler.php(152): PKP\scheduledTask\ScheduleTaskRunner->run() #14 /home/ppmj/public_html/lib/pkp/classes/core/ScheduleServiceProvider.php(88): PKP\scheduledTask\PKPScheduler->runWebBasedScheduleTaskRunner() #15 [internal function]: PKP\core\ScheduleServiceProvider->PKP\core\{closure}() #16 {main} thrown in /home/ppmj/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Filesystem/LockableFile.php on line 153