Comparison of the production and environmental effects of different potato cultivation systems based on the simulation experiment: the Daisy model
2007
Mazurczyk, W. | Nowacki, W.,Instytut Hodowli i Aklimatyzacji Roslin, Radzikow (Poland). Zaklad Agronomii Ziemniaka, Jadwisin | Takac, J.,Soil Science and Conservation Research Institute, Bratislava (Slovakia)
This paper describes the results of the simulation experiment with use of Daisy model (Potato Triada calibration) which covered potato cultivation over 2000-06 and three potato cultivation systems: conventional, pro-ecological and integrated. The results show that manure with proper irrigation ensured the highest potato tuber yields (about 55 t/ha of fresh weight) in all the systems tested. The irrigation methods used (simple balance and decision support system: DSS) eliminated water stress during the potato vegetation period with the application of the total irrigated water rate of about 110 mm. Irrigation increased evapotranspiration and the number of N stress days regardless of potato cultivation system. The lowest values of nitrogen balance were 49 and 58 kg N/ha in integrated (dynamic and static options) systems of cultivation. The highest content of N in soil (101 kg N/ha) remained in pro-ecological combination, without irrigation. For the vegetation period the nitrogen leakage from soil assessed by Daisy ranged from 8 to 14 kg N/ha for the period of potato vegetation. The Daisy model with the Triada Potato calibration facilitated the simulation of potato yields with RRMSE of 15.4 percent, for the conventional cultivation system of that crop
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