Investigation of Biochar Application Effect on Photosynthetic Pigments, Enzymes Activity and Yield of Safflower (Carthamus tinctorius L.) under Water Stress Journal title: Journal of Agroecology Authors: Marzieh Ghaedi,Ehsan Bijanzadeh,Mahdi Najafi Ghiri,Ali Behpouri,Vahid Barati, Subject(s): Agricultural Science