Source: https://www.cambridge.org/core/services/aop-cambridge-core/content/view/1DAF38C8DC90C36F9D64128FC31C3D3D/S174217052100051Xa.pdf/div-class-title-production-and-use-of-homemade-dry-manure-based-tea-in-fertigation-systems-in-north-africa-div.pdf