
تعداد نشریات | 13 |
تعداد شمارهها | 623 |
تعداد مقالات | 6,502 |
تعداد مشاهده مقاله | 8,650,359 |
تعداد دریافت فایل اصل مقاله | 8,256,571 |
Potential N mineralization and availability to irrigated maize in a calcareous soil amended with organic manures and urea under field conditions | ||
International Journal of Plant Production | ||
مقاله 7، دوره 6، شماره 4، دی 2012، صفحه 493-512 اصل مقاله (268.49 K) | ||
نوع مقاله: Research Paper | ||
شناسه دیجیتال (DOI): 10.22069/ijpp.2012.762 | ||
نویسندگان | ||
P. Alizadeh1؛ S. Fallah* 2؛ F. Raiesi3 | ||
1Former M.Sc. student of agroecology, Faculty of Agriculture, Shahrekord University. | ||
2Assistant professor of agroecology, Faculty of Agriculture, Shahrekord University. | ||
3Professor of soil science, Faculty of Agriculture, Shahrekord University. | ||
چکیده | ||
Quantification of the Nitrogen (N)-supplying capacity of organic manures provides an important insight into more effective N management practices. The aims of this study were to determine the potential N mineralization of cow manure (CM), poultry manure (PM), urea fertilizer (UF) and the combined use of cow manure + urea fertilizer (CM + UF) for silage maize (Zea mays L.) in a calcareous soil under field conditions. Selected soil samples were collected after different N sources application, and mineral N (NO3--N and NH4+-N) was determined for a total of 110 days of field incubation, using the buried bag technique. Poultry manure-treated soils had significantly higher total N mineralization (244 kg ha-1) than CM (109 kg ha-1), UF (138 kg ha-1) and CM + UF (141 kg ha-1) treated soils. However, N availability was greater in UF (69%) and PM (61%) treated soils than that of CM + UF (47%) and CM (28%) fertilized soils. Shoot dry matter of maize and N uptake were considerably higher in PM treated soil than in UF, CM and CM + UF soils. Nevertheless, maize N recovery was significantly higher in urea soils (60%) than in PM (42%) and CM + UF (37%) soils followed by CM soil (15%). In conclusion, our data indicated that PM and the CM + UF that released N slowly resulted in high maize silage production, N uptake and N recovery following their application in these calcareous soils with low SOM content and N availability. | ||
کلیدواژهها | ||
Keywords: N-supplying capacity؛ Cow manure؛ Poultry manure؛ Inorganic fertilizers؛ Silage maize؛ N uptake and recovery | ||
آمار تعداد مشاهده مقاله: 2,533 تعداد دریافت فایل اصل مقاله: 2,674 |