Effects of nano iron oxide powder and urban solid waste compost coated sulfur on chemical properties of a saline-sodic soil
The main limiting factors in saline-sodic soils are high amounts of salts, low soil organic matter (SOM) and lowavailability of macro and micro-nutrients. The effect of different amounts of nano iron oxide powder and urban solidwaste compost coated sulfur (USWCS) on the chemical properties of a sali...
| Published in: | Desert |
|---|---|
| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Published: |
University of Tehran
2015-01-01
|
| Subjects: | |
| Online Access: | https://jdesert.ut.ac.ir/article_54081_bdfced4eed6226575a5a56bc48861aab.pdf |
| Summary: | The main limiting factors in saline-sodic soils are high amounts of salts, low soil organic matter (SOM) and lowavailability of macro and micro-nutrients. The effect of different amounts of nano iron oxide powder and urban solidwaste compost coated sulfur (USWCS) on the chemical properties of a saline-sodic soil was investigated. The experimentwas conducted using a randomized complete block design with factorial arrangement and three replications, in a farmnear Qom city. Treatments used in this study included USWCS (0 and 15 ton/ha) and nano iron oxide powder (0 and 20mg/kg); treatments were applied to treated plots of 4 m2 and sunflower seeds were sown. The results show that 20 mg/kgof nano-iron oxide, significantly (P<0.05) increased electrical conductivity of saturation extract (ECe), availability ofnutrient elements (5.26, 30, 18.18% for phosphorous (P), iron (Fe), and copper (Cu), respectively) in soil, while nitrogen(N), pH and sodium adsorption ratio (SAR) in soil decreased significantly (P < 0.05). Fifteen (15) tons/ha of USWCSsignificantly increased soil ECe (6.1%), micro and macro-nutrients amounts (8.3, 21.1, 46.6, 45. 5, and 14.9% for N, P,Fe, Cu, and Manganese (Mn) respectively), but significantly (P < 005) decreased the soil pH and SAR, compared to thecontrol. The combined effect of 20 mg/kg of nano iron oxide and 15 ton/ha of USWCS increased micro-nutrientavailability, but decreased soil pH and SAR significantly. It was concluded that the combined application of USWCSand nano iron oxide increased the availability of nutrients in saline-sodic soil. |
|---|---|
| ISSN: | 2008-0875 2345-475X |