The effect of spraying with nan iron and gibberellic acid on the chemical traits of moringa oleifera seedlings growing in two agricultural medium

الملخص EN

The experiment was conducted at the Agricultural Research and Experiments Station of the College of Agriculture / University of Kirkuk (Alsiyada field) in Kirkuk province, during the growing season (2019-2020).

In order to study the effect of spraying with nano chelated iron at a concentration of (4, 2, 0) g / litre and gibberellin (500, 250, 0) ml /L, on some chemical traits of Moringa plants using two agricultural medium (sandy loam soil and loamy sand soil).

Sowing seeds on the date (3/1/2019) in polyethylene bags, The seedlings were sprayed with nano iron and gibberellin until complete wetness by using 0.01% of liquid soap as a diffuser on two dates, the first on (15/11/2019) of the nano iron element and (17/11/2019) of gibberellic acid and the second spraying on (1 / 2/2020) of nano iron and (3/2/2020) of gibberellic acid, The experiment was designed by Randomized Complete Block Design (RCBD) according to the split-plot system and with three replications.

As each experimental unit included 5 pots, The results obtained can be summarized: The use of sandy loam soil had a significant effect in increasing the percentage of protein, phosphorus and iron, and the medium had no significant effect on the vegetative and root traits and the percentage of nitrogen, potassium and carbohydrates in the leaves.

The concentration of 2 g / L of nano iron led to a significant increase in the percentage of phosphorous and potassium in the leaves, while the concentration exceeded 4 g / L in the percentage of carbohydrates, and the comparison treatment was excelled on the percentage of iron.

The effect of 250 ml/L of gibberellin significantly affected the percentage of nitrogen, protein and phosphorous, potassium and iron, while the control treatment was excelled in the percentage of carbohydrates.