کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4492406 | 1623288 | 2015 | 4 صفحه PDF | دانلود رایگان |
The influence of potassium fertilizer source and the increasing potassium fertilization levels (0, 200, 400 and 600 mg К2О/kg soil) supplied either as K2SO4 or KCl at equal nitrogen and phosphorus fertilizer background (200 mg N/kg and 150 mg P2O5/kg soil) on the content and the uptake of nutrient elements from the soil in potato plant parts was studied. Pot experiment was carried out. The fertilization with K2SO4 decreased N content in roots from 2.91% at level К200 tо 2.52% at level К600 and increased N content in aboveground biomass compared to the control and variants fertilized with KCl. The increasing KCl rates led to decreasing of N content in aboveground biomass from 4.03% at К200 to 2.34% at potassium level К400. Nitrogen content in tubers at variants fertilized with K decreased compared to the control. Potassium fertilization did not influence considerably P content in the plant parts. The К content in plant parts at variants fertilized with KCl was higher than the plants fertilized with K2SO4. Approximately 74% of absorbed nitrogen from the soil was allocated in the above ground biomass. The rest of the nitrogen was distributed between roots (17%) and tubers (9%). The highest P uptake was determined in control plants. The quantity of the uptaken K allocated in aboveground biomass was the highest (83%). The rest of K was distributed between roots (11%) and tubers (6%).
Journal: Agriculture and Agricultural Science Procedia - Volume 6, 2015, Pages 63–66