الفهرس 
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Abstract
Two field trials were conducted in a administration field at Faqous distract, Sharqia Governorate in the two summer seasons of 2018 and 2019. This work was aimed to investigate the effect of planting distances, phosphorus and nitrogen fertilization on growth and productivity of stevia crop. The treatments consist of two planting distances, 25 cm and 50 cm between hills; phosphorus fertilization, without and with 15.5 kg P2O5/faddan as well as four nitrogen fertilization treatments (15 and 30 kg N/ faddan each with and without foliar nutrient application). The results indicated that plant height and number of branches /plant did not significantly differed due to planting distances and phosphorus fertilization. Number of branches/plant was significantly increased by increasing nitrogen levels up to 30 kg/ faddan compared with 15 kg N/faddan significant increments were observed by 50 cm planting distance and adding 100 kg super phosphate (15.5 kg P2O5) at the2nd and 3 third cut only by number of leaves/plant in the first season. The results showed significant increments due to planting stevia on 50 cm distance and adding 100kg superphosphate (15.5 kg P2O5) by plant fresh weight, leaves fresh and dry weights/plant in the two season and all cuts except the first one by leaves fresh weight in the first season. On the other hand, total fresh yield/faddan leaves fresh and dry yields/faddan were significantly higher by planting stevia at 25cm distance and adding 100kg superphosphate15.5 kg P2O5/faddan Concerning the effect of adding 30 kg N/faddan and foliar application, there were significant increments in all studied characters of stevia by all cuts in the two seasons except plant height, which the differences did not reach the level of significance. Positive significant interaction effects were detected only by the interaction between planting distance and phosphorus fertilization on plant fresh weight, total fresh yield/ faddan Leaves fresh and dry yields/faddan also between planting distance and adding 30 kg/faddan nitrogen fertilization on leaves fresh weight, total fresh yield/faddan and leaves fresh and dry yields/faddan.