tailieunhanh - Effectiveness of nitrogen fertilization and application of microbial preparations in potato cultivation

This study examined the effectiveness of nitrogen fertilization and application of microbiological preparations in potato cultivation. The experiment factors were doses of nitrogen of 0, 60, 120, and 180 kg N ha–1 and microbial preparations of BactoFil B10, Effective Microorganisms EM, and UGmax | Turkish Journal of Agriculture and Forestry Research Article Turk J Agric For (2014) 38: 299-310 © TÜBİTAK doi: Effectiveness of nitrogen fertilization and application of microbial preparations in potato cultivation Marek KOŁODZIEJCZYK* Department of Crop Production, University of Agriculture in Krakow, Krakow, Poland Received: Accepted: Published Online: Printed: Abstract: This study examined the effectiveness of nitrogen fertilization and application of microbiological preparations in potato cultivation. The experiment factors were doses of nitrogen of 0, 60, 120, and 180 kg N ha–1 and microbial preparations of BactoFil B10, Effective Microorganisms EM, and UGmax. The amount of inorganic N in the 0– m soil layer before potato planting fluctuated from to kg N ha–1, while after harvest it ranged from to kg N ha–1. Nitrogen supply from mineralization during potato vegetation ranged from to kg N ha–1. Each of the applied nitrogen doses caused a marked increase in potato-plant productivity in comparison with a smaller dose. Growing nitrogen doses decreased the value of the fertilization effectiveness index. Application of microbial preparations led to an increase in soil nitrogen content after plant harvesting and a lower uptake of N, diminishing the indices of NUE, NUpE, NAE, and NRF. Key words: Microbial preparations, N fertilization, nitrogen use efficiency, potato 1. Introduction Potato plant production systems are generally problematic in regards to nutrients, particularly nitrogen. Therefore, judicious fertilization in potato-plant production with nitrogen ensuring realization of agronomic, economic, and environmental goals poses a challenge to both agricultural science and practice. There have been numerous strategies of improving the effectiveness of nitrogen utilization by crops. In the opinion of Zebarth et al.

• Nông nghiệp
• Microbial preparations
• N fertilization
• Nitrogen use efficiency
• Potato cultivation
• Potato plant production systems
• Plant growth
• Mungbean (Vigna radiate L
• Nodulation and yield
• Enhancement of plant growth