Effect of Some Isolates of Pseudomonas Vaccination on Growth and Nutrient Uptake of Tomato Under Field Condition

Document Type : Research Paper

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    Identifying of plant growth promoting bacteria and utilizing them is one of the basic stages in sustainable agriculture. In this experiment some newely isolated and identified strains of Pseudomonads, were used for the first time in inoculation of tomato in the field circumstances. Experiment was done based on randomized block design with 5 treatments and 3 replications. In this experiment tomato (Lycopersicon esculentum Mill cv. Super Chief) seedlings were inoculated with integrated treatment of Pseudomonas ssp. strains including (S19-1+S10-3, S14-3+S19-1 and S19-1+S21-1), moreover, the control treatment without bacteria inoculation and fertilizer treatment (according to soil test) inorder to copmparison were considered. The result showed that the effects of bacteria on characters such as yeild, fruit size, vitamin C, lycopen, percentage of N, P, K in foliage of plant and leaf area index is meaningful and the best output is in S19-1+S14-3 (4830.9 g.m-2) and the highest amount of vitamin C, lycopene, N, P, K, LAI was in S191-1+S21-1 treatment respectively and amounts of 7.02 mg.100g-1 Fwt, 46.01mg.kg-1, 30.09 mg.g-1, 7.30 mg.g-1,  15.60 mg.g-1, 6.60 cm2. However the other measured traits in this experiment including number of fruits, acidity, TSS, pH, EC, firmness, diameter of stem, number of lateral shoot and chlorophyll index were not affectd by bacteria. According to this result we can mention the efficiency of used bacteria as a biofertilizer in improvement of yeild, nutrient uptake, LAI and fruit quality.
 

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