This study was carried out in two parts, the first part of which was concerned with potato tubers, which were grown in the experimental farm in El-Raheb area - Faculty of Agriculture - Menoufia University during 2020. As for the second part related to cucumber, was grown in the farm of the Faculty of Agriculture - Menoufia University - Shebin El-Kom during 2023. The main aim of this study was to determine the effect of using organic fertilizer, mineral fertilizer, and mixed fertilizer on some physical and mechanical properties of potato tubers and cucumber fruits during storage. The study experiments were conducted on two varieties of potatoes, Diamond, and Arizona. And for cucumber fruits, the Galaxy variety was chosen. Five fertilizing treatments were used in the cultivation of potato tubers and cucumbers as follows: This study was carried out in two parts, the first part of which was concerned with potato tubers, which were grown in the experimental farm in El-Raheb area - Faculty of Agriculture - Menoufia University during 2020. As for the second part related to cucumber, was grown in the farm of the Faculty of Agriculture - Menoufia University - Shebin El-Kom during 2023. The main aim of this study was to determine the effect of using organic fertilizer, mineral fertilizer, and mixed fertilizer on some physical and mechanical properties of potato tubers and cucumber fruits during storage.