The Present Thesis Work was developed in the University field of the Faculty of Zootechnics of the National University of the Peruvian Amazon, Located on the Yurimaguas - Tarapoto Highway, km 18 in the Alto Amazonas Province, Loreto Region, city of Yurimaguas, with the purpose of determining the NPK fertilization and the influence on the agronomic characteristics of Cucumber (Cucumis sativus L.). The evaluated indicators were: plant height (cm), fruit diameter (cm), fruit length (cm), number of fruits / plant, fruit weight (gr) and yield (kg / ha); A Random Complete Blocks (D.B.C.A) design with five treatments and four repetitions was used. The treatments were: T1 (control), T2 (100 kg of NPK / ha), T3 (120 kg of NPK / ha), T4 (140 kg of NPK / ha) and T5 (160 kg of NPK / ha). In the thesis work, the following results were obtained: Regarding the height of the plant (cm), values of 101.8 ...