| Investigating the environmental effects of irrigated wheat production systems (Case study: Kalposh rainfed area of Miami city, Semnan province) |
| Paper ID : 1084-NICAME1402 |
| Authors: |
|
zaynolabedin omidmehr * Academic member |
| Abstract: |
| Effect of three water wheat production systems (conventional method, reduced tillage and no-tillage) on energy consumption and global warming potential of irrigated wheat fields investigated in Shahrood city. Necessary data about three conventional method, reduced tillage and no-tillage methods were obtained through face-to-face interviews and completing questionnaires. After collecting data, parameters related to energy and global warming potential due to greenhouse gas emissions were calculated based on carbon dioxide equivalent. In three production systems, the energy consumption caused by the use of inputs varied between 47886-40448 mega joules per hectare. The highest and lowest input energy was related to the common tillage and no-tillage, respectively. In comparison with other inputs, nitrogen fertilizer accounted for the highest share of input energy in all three conventional methods (35%), reduced tillage (38%) and no tillage (41%). After nitrogen fertilizer, fuel energy, irrigation water and electric energy accounted for the highest amount. In terms of fuel energy, the common method ranked first with 16% of the total, and no-tillage ranked last with 6.6%. The highest and lowest amount of greenhouse gas emissions and global warming capacity were related to conventional cultivation (13741 kilograms of carbon dioxide equivalent per hectare) and no-tillage (5644 kilograms of carbon dioxide equivalent per hectare), respectively. Therefore, by using conservation tillage methods (reduced tillage and no-tillage) and correct management of the use of inputs, it is possible to reduce fuel consumption, energy and greenhouse gas production and increase energy efficiency without significant reduction in wheat yield. |
| Keywords: |
| Carbon dioxide, Climate change, Conservation tillage, Greenhouse gases emission. |
| Status : Paper Accepted (Poster Presentation) |
