Original ResearchPublished 14 September 2026Calcium and potassium fertilization improves productivity and forage quality with implications for soil available potassium in Opuntia ficus-indica under hot arid conditionAnandkumar Naorem · Sawsan Hassan · Mounir Louhaichi · Devi Dayal · Deepesh Machiwal · Rahul Dev · Dheeraj SinghFrontiers in Soil Sciencedoi 10.3389/fsoil.2026.1950553