Control of Gray Mold on Tomato plants by Spraying Piper nigrum and Urtica dioica Extracts under Greenhouse Condition. Iraqi Journal of Science [Internet]. 2019 May 26 [cited 2024 May 6];60(5):961-7. Available from: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/794