Effects of mikrobial fertilizer (Trichoderma harzianum) with using grafted and non grafted seedlings on yield and quality of tomato

This study was performed in open field conditions, in Çanakkale region in 2009, effects of microbial fertilizer Trichoderma harzianum with using grafted and non-grafted tomato seedlings on yield and quality were determined. Seedlings of Veglia RZ F1, were grafted on Kemerit rootstock and non-grafted seedlings had been used in the study. Tomato seedlings, which were kept for T. harzianum treatment, were plunged respectively 1-2 minutes into the solution of 50 g Trichoderma harzianum (KUEN 1585x106 CFU/g) included on 5 lt of water, before the planting.According to data, the effects of grafting on fruit weight, diameter and length were found important as statistically. When the highest values of yield per plant of plant (17,258 kg/plant, 9,1891 kg/plant in first and second planting times respectively) were taken from grafted and applied microbial fertilizer Trichoderma harzianum, the lowest yield per plant (7,705 kg/plant, 3,445 kg/plant in first and second planting times respectively) were obtained from the control plants which did not performed to both of the two treatments. As these treatments promote the root development and produce metabolites like hormones, and also solve better the plant nutrients from organic materials and soil, the length of the plants, wet weight of root and values of yield were found highest. Although it was determined that, the interaction of both of the two treatments had a possitive effect on vitamin C content. Also it was observed that, the grafted plants were more resistant to some stress factors like, pest, soil born diseases and low temperatures.Key Words: Grafted seedlings, tomato, Trichoderma harzianum