Nascimento, Jose, Jacob Souto, and Lourival Cavalcante. 2017. “Watermelon (Citrullus Lanatus Thunb.) Production As Affected by Soil Potassium Fertilizer and Livestock Manure”. Agrociencia Uruguay 21 (2), 7- 14. http://agrocienciauruguay.uy/ojs/index.php/agrociencia/article/view/152.