Investigating the use of iron slag in an iron smelting plant in combination with bichazi and vermicompost to reduce the water stress of coriander plants
Subject Areas :Hossein Asghari Shivaee 1 , Sahar Dehyouri 2
1 - mechanic department islamshahr branch Islamic adad university
2 - Assistant Prof. of Agricultural Extension and Education, College of Agricultural, Environmental Sciences Research Center, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
Keywords: Coriander, iron slag, essential oil yield, drought stress.,
Abstract :
This research was conducted in order to test the use of iron slag without and with the combination of biochar and vermicompost under drought stress conditions on coriander plants. The experiment was conducted as a factorial based on a completely randomized design. The first factor included drought stress in 2 levels and the second factor included fertilizer treatments in 7 levels. The results showed that the drought stress of 50% of the crop capacity caused a decrease in the fresh weight of shoot by 35%, fresh weight of roots (25%), chlorophyll a (29%), chlorophyll b (25%), total chlorophyll (26%), essential oil yield. (42%), phosphorus (39%), potassium (18%), magnesium (26%), iron (40%) and an increase in malondialdehyde (34%) compared to the treatment. The treatments of different fertilizer sources increased shoot weight, root weight, chlorophyll content, relative leaf water content, essential oil yield, leaf elements and decreased malondialdehyde and ion leakage. Based on the results of iron slag treatment, especially in combination with vermicompost, it had an important role in increasing plant yield under stress conditions. The correlation results between the traits showed that the yield of essential oil with fresh weight of shoots (0.98), fresh weight of roots (0.87), chlorophyll (0.94), relative content of leaf water (0.91), leaf phosphorus (95.0) 0), leaf potassium (0.86), leaf magnesium (0.92) and leaf iron (0.83) had a positive and significant correlation with malondialdehyde (-0.93) and ion leakage (70) -0/) had a negative and significant correlation.