Effect of elemental sulphur extracted from gas associated with oil production on yield and quality of tomato and onion

Abstract

A field experiment was conduct at Basrah province south of Iraq, Al- Burjsia region west of Basrah center, during the growing season of 2019 - 2020 to study the effect of elemental Sulphur on performance of onion and tomato Plants. Two sulphur levels were used (0 and 80 kg S ha^-1) with four replicates for each treatment. Onion (Allium cepa L., var. Crestal) and tomato (Solanumlyco persicum L., var. Yassamin) were used. Onion bulbs and tomato fruits were collected from eight plants for each plots for estimating water content. Dried bulbs and tomato fruits were used to determine total N and S . Ascorbic acid content was estimated in fresh tomato fruits at full maturity stage and total weight of onion bulbs and tomato fruits for each plot were recorded for estimating total yield. The results showed a positive significant effect on sulfur concentration in tomato leaves and onion bulb.  Same results were showed that addition of sulphur effects significantly increased nitrogen concentration at both plants. Results indicating that addition of elemental sulphur had no significant effects on N/S ratio and water content for both plants. Ascorbic acid content in tomato fruits significantly increased to 24.00 mg 100 g^-1 F.W.  compared with control treatment with a value of 18.25 mg 100 g^-1 F.W. Application of elemental sulphur at rate of 80Kgha^-1had a significant effect on yield of tomato and onion and increased by 12.85 and 34.38 % with respect to the control treatment of tomato fruits and onion bulbs, respectively.