The Effect of Potassium Chloride on the Productivity and Quality of Allium fistusolum L.

Abstract

      Allium fistusolum L. is a spicy vegatable containing various nutrients beneficial to the human body, such as vitamins and mineral elements. In addition, onions can eliminate stinking/discomfort tastes and excite apatite. There are several cultural practices available to increase in the productivity and the quality of Allium fistusolum L, including the fertilization with macronutrients. An experimental was carried out in Phu Cat district of Binh Dinh province to determine the effect of different KCl levels (160 kg K₂O to 220 kg K₂O hecta^-1) on yield and quality of Allium fistusolum. The onion bulbs were planted in slight loam substrate. The results showed that applying KCl at 190 kg K₂O per hectare yielded in high bulb yield, larger bulb size and weight and higher dry matter content, reducing sugars, vitamins C and PP and minerals in comparison with other KCl rates.