الفهرس 
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Abstract
ABSTRACT
Two pot experiments were carried out during the two successive winter seasons of 2020-2021 and 2021-2022 at the Agricultural Research Center, Giza Governorate, Egypt, to study the effect of use of un-traditional nitrogen sources such as human urine and spraying with some growth stimulants such as Spirulina Platensis foliar extract to improve the vegetative growth, yield and its components as well as chemical composition traits of head lettuce plants (Lactuca sativa var. capitata, L.) and rocket (Eruca sativa, L.). This experiment included 15 treatments which were the combination of five human urine fertilization and three foliar spray treatments by Spirulina Platensis extract. Human urine fertilization treatments were added beside plants six times during the growing season, the first dose after 21 days from cultivation and the second after 10 days from the first dose, then every 10 days by intervals. The foliar spray by Spirulina Platensis extract treatments were added four times during the growing season, the first batch after 21 days from cultivation and every 15 days by intervals. A split plot design with four replicates was adopted in this experiment where the mineral fertilizer and human urine treatments were located in the main plots and the foliar spray by Spirulina Platensis treatments were distributed randomly in the sub plots. The interaction treatmant 50% mineral – N + 50 % Human urine- N added in sex times during the growing season, the first dose after 21 days from transplanting and the second dose after 10 days from the first dose, then every 10 days by intervals combined with spraying the plants with Spirulina Platensis foliar extract at concentration 2 cm3 / L. four times, starting after 21 days from transplanting and every 15 days by intervals was recommended to obtain good vegetative growth, higher yield and its component traits as well as good chemical composition traits with best quality. On the other hand, rocket plants were treated with 5