EFFECT OF ADDITION OF ORGANIC AND CHEMICAL FERTILIZATION AND SPRAYING OF ALPHA TOCOPHEROL ON THE GROWTH AND YIELD OF TOMATO (SOLANUM LYCOPERSICUM MILL.).

A field experiment was carried out during the spring season of 2018 in the station (A) - Department of Horticulture and Gardening Landscape - College of Agriculture Engineering Sciences, University of Baghdad-Al-Jadriya. In order to study the effect of organic, chemical fertilizers and spraying of alpha-tocopherol on growth and yield of tomato (Hybrid Sereen). The experiment included two factors, the first factor was used different types of fertilizers which included the chemical fertilizers according to the recommendation N: 120, P2O5: 150 and K2O: 120 kg ha^-1 (T₁) it was added in two batches, and the organic fertilizer of the cows manure at 30 ton ha^-1(T₂), It was added before planting. The Organic Fertilizer Manufacturer (Care Ball supermix) added in two levels, each level being as fertilizer treatment, 20 kg per 1000 m² (T₃), the second level is 40 kg per 1000 m2 (T₄), as well as the control treatment (T₀). The second factor was spraying the alpha tocopherol with two levels. The first level is the spraying alpha tocopherol at concentration of 100 mg L^-1 (E₁), the second level was spraying alpha tocopherol at concentration of 200 mg L^-1 (E₂), in addition to the control treatment, which sprayed with distilled water only (E₀). Results showed the treatment T₂ traits superior in all vegetative growth of plant: height plant, number of branches, number of leaves, leaf area and dry weight of vegetative growth, Also excelled (T₂) of the number of fruits, highest yield per plant and total yield, while the treatment T1 gave highest of weight of the fruit. In addition, the foliar spraying of alpha tocopherol showed significant superiority in treatment (E₂) in all traits of vegetative growth and yield characteristics. Treatment T2E2 gave the highest plant length (145.3 cm), greatest number of plant branches (16.84 branch Plant^-1), highest number of leaves (138.7 Leaf Plant^-1), largest leaf area (264.7 dcm2Plant^-1), highest dry weight of vegetative growth (233.6 g Plant^-1), highest number of fruits and highest yield per plant and total yield (40.55 fruit Plants^-1, 3.99 kg Plants^-1 and 66.33 ton ha^-1 respectively). While treatment T1E2 was superior by giving the highest fruit weight (111.8 g fruit^-1). The suggestion could be that using cow manure (organic fertilizer) 30 ton ha^-1 and foliar spraying of alpha tocopherol in concentration 200 mg L^-1, resulted in highest of vegetative growth and yield. [ABSTRACT FROM AUTHOR]