Nitrogen utilization from fertilizers by potato early cultivars
2005
Mazurczyk, W., E-mail: [email protected] | Wierzbicka, A. | Wroniak, J. (Instytut Hodowli i Aklimatyzacji Roslin, Radzikow (Poland). Zaklad Agronomii Ziemniaka, Jadwisin)
The aim of investigation was estimation of nitrogen utilization from mineral fertilizers by early potatoes in dependence of genetic factors (species), the level of nitrogen fertilization and climatic conditions. The main factor influencing on nitrogen utilization during growing periods were climatic conditions. Drought conditions lowered Wn values. Nitrogen utilization decreased with increasing N rates on each harvest date. The utilization of nitrogen from low doses of fertilizers (40-100 kg N/ha) amounted about 15, 25 and 40 percent for T1, T2, T3 (dates of tuber harvest), respectively
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