تأثير التسميد الفوسفاتي و البوتاسي في نمو نبات الارقطيون Arctium Lappa L. و محتوى جذوره من الفينولات الكلية

الملخص EN

A field experiment was carried out in the Experimental Researches Station (2), Agriculture College - Al-Muthanna University, during 2017-2018 to study the effect of three levels of phosphorus (0, 80 and 120 kg P2O5.

ha-1) and three levels of potassium (0, 100 and 150 kg K2O.

ha-1) on growth of burdock plant( Arctium lappa L.

) and its roots content of total phenols.

Randomized Complete Block Design was used with three replicates.

Results showed the plants significantly supervised treated at the level (120 Kg P2O5.

ha-1) in plant height (50.77 cm), number of leaves (10.23 leaf), leaf area (75.43 dm2), shoot dry weight (64.6 g ), root dry weight (79.18 g) and roots content of total phenols (40.57 mg GAE.

g-1dw).

Potassium fertilization at level (150 kg K2O.

ha-1) significantly supervised in plant height, number of leaves, leaf area, shoot dry weight, root dry weight (52.66 cm, 10.68 leaf, 75.43 dm2, 65.7 g and 82.21g) respectively.

While, the plants that treated at the level (100 Kg K2O.

ha-1) gave highest content of total phenols in roots (44.41 mg GAE.

g-1dw).