Effect of Humic acid and iron chelate on quality and quantity yelid of Satureia hortensis L.)

In order to study the effect of Humic Acid and Iron Chelate on the quality and quantity of Satureja hortensis was carried out in a factorial test based on a completely randomized design with 3 replication in 2015-2016. The treatments of this experiment consisted of Humic Acid in levels of non-use (Control), 150,300, 500 mg / L and Iron Chelate was in levels of non-use (Control), 1, 2,4 g / L. The measured traits were Plant height, plant dry weight, number of branches, chlorophyll a, chlorophyll b, total chlorophyll and the percentage of essential oil, carvacrol and γ-terpinene. Humic acid increased plant height, plant dry weight, chlorophyll a, chlorophyll b, total chlorophyll, essential oil content and the percentage of γ-terpinene. Moreover, the highest positive impact was observed on treatment with 300 mg per liter of Humic Acid. Iron Chelated increased plant height, plant dry weight, number of leaves, chlorophyll a, chlorophyll b, total chlorophyll and percentage of essential oil and carvacrol. In general the most positive effect was in 4 grams per liter treatment of iron. To conclude, the application of humic acid with chelated iron, especially in combination of 300 mg per liter of humic acid with 4 grams per liter of iron improve quality and quantity of Saturejahortensis Also, The interaction of humic acid with iron did not had significant effect on percentage of essential oil.