The effect of foliar fertilization with Alkalin PK in American ginseng culture

American ginseng (Panax quinquefolium L.) is a famous medicinal plant with adaptogenic, immunostimulating and anti-aging properties. In four-year-lasting field experiment located on light loamy sand soil the effect of foliar fertilization with 0.33% Alkalin PK 10:20 (foliar fertilizer with very high pH-11.5) as well as Alkalin with fungicides on American ginseng yields and morphological parameters were examined. Twice a year Alkaline PK application as well as Alkalin with fungicides positively affected American ginseng root, stem, laeves quality parameters as well as the weight of fruits and seeds. Alkalin also limited plant disease infestation and as a consenquence increased plant population in four consecutive years of vegetation. The applications were connected with higher accumulation of phosphorus and potassium in plant tissues.