Effect of potassium fertilizers in growth parameters and macronutrient content in Nigllus plant Nigella sativa L. with the increasing concentrations of Gibberellic acid

الملخص

This experiment  was conducted to study the effect of Potassium  and Gebberellic acid on some growth parameters (Nigella sativa L.) and mineral  macronutrient content of  Nigllus seed (Nigella sativa L.) Experiment was condueted using(CRD) (completely Randomized Design) as factoridl with three replications, and the use of least difference (L.S.D) at a probability level of 0.05 to compare means of treatments by using four Potassium  levels as follows 0,100,200,300Kgm.h^-1 added to the soil in addition to four concentration of Gebberellic acid as follows 0,25,50,100mg.L^-1sprayed on the plants.

Results can be summarized as follow:

1- Addition ofPotassium  in a level of 300 Kg.h^-1lead to 20% increase in plant length,8% in dry weight 23% in nitrogen, 348% in phosphorus, 30% in Potassium, 43% in calcium, 27% in magnesium, 7% in iron in growth parameteres

2-.Gibberellic acid  was spryed at concentrations 100 mg.L^-1 lead to increase  plant height by 10.9% , dry weight by 3% ,Nitrogen 2%,phosphorus5%, calcium 1%,magnesium4%iron0.005%