الفهرس 
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Abstract
Ahmed El Sayed Hamza Osman: Effect of Some Organic Fertilizer Treatments on Growth and Productivity of Some Husk Tomato Cultivars. Unpublished Ph.D. Thesis, Department of Arid Lands, Faculty of Agriculture, Ain Shams University, 2017.
Two field experiments were carried out during the two successive growth seasons of 2013 and 2014 in Abu-Ghaleb-Giza governorate (58 Km north Cairo from the desert road). The experiment include 15 treatments which were the simple combination between five levels of organic nitrogen Fertilizer (100% organic, 75% organic + 25% mineral, 50% organic + 50% mineral, 25% organic + 75% mineral and 100% mineral), with three husk tomato cultivars (Toma Verd, Pi1291561 and local one), The obtained results indicated that, the two foreign cultivars resulted have more plant growth measurements (height of plant, leaves and shoots number per plant, fresh and dry weight of whole plant) over the local cultivar. Within the two foreign cultivars Toma Verd, gained the more vigoursity than Pi1291561 cultivar. Also, the highest values of fruits, early, marketable and un-marketable of husk tomato, all of them were correlated to growing Toma Verd cultivar. The physical fruits quality (weight, diameter and size of fruit) recorded their highest values with cultivation foreign cvs. However local cultivar produced the highest values of dry matter, TSS values and Vit. C content. The foreign cultivars resulted the highest values of N, P, K and total acidity values. Concerning to addition of different percents of organic nitrogen, the decreasing organic parts in nitrogen mixture gained an increase in all plant growth measurement (plant height, leaves and shoots number, and dry weight of plant. That plants which recorded its nitrogen requirements as 100% mineral form resulted the earliest flowering and the highest flowers number. Moreover, total fruits yield and its marketable, un-marketable one were correlated with increasing the percent of mineral nitrogen in fertilizing mixture. It could be summarized that, the heaviest husk tomato fruits yield were produced with that plants which received 100% as mineral nitrogen. The physical fruits properties (fruits weight, diameters, and size) as well mineral values (TSS, total acidity, N, P and K contents), all of these criteria’s were detected with that plants which recorded its nitrogen needs as mineral form (100%).
Key words: Productivity, Husk Tomato, Cultivars, Organic, mineral, Fertilizer.