دورية أكاديمية
Effects of soil tillage and fertilization on resource efficiency and greenhouse gas emissions in a long-term field experiment in Southern Germany.
| العنوان: | Effects of soil tillage and fertilization on resource efficiency and greenhouse gas emissions in a long-term field experiment in Southern Germany. |
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| المؤلفون: | Kustermann, B., Munch, J.-C., Hulsbergen, K.J. |
| المصدر: | Eur. J. Agron. 49, 61-73 (2013) |
| بيانات النشر: | Elsevier Science |
| سنة النشر: | 2013 |
| المجموعة: | PuSH - Publikationsserver des Helmholtz Zentrums München |
| مصطلحات موضوعية: | Greenhouse Gas Emission, Nitrogen, N2o Emission, Soc, Carbon Sequestration, Tillage, Fertilization, Energy |
| الوصف: | Two factorial long-term field experiments were carried out at the experimental site of Scheyern, located in southern Germany, 40 km north of Munich (48 degrees 30'0' N, 11 degrees 26'60' E). Here three soil tillage systems were investigated: CT (conventional tillage with moldboard plough, 25 cm plowing depth), RT1 (reduced tillage with chisel plow, 18 cm working depth), and RT2 (reduced tillage with chisel plow, 8 cm working depth). At the same time, three fertilization systems were analyzed (high (N3), medium (N2) and low (N1) mineral N input) with a crop rotation of winter wheat (Triticum aestivum L) - potatoes (Solanum tuberosum L.) - winter wheat-corn (Zea mays L). The long-term effects of tillage and fertilization on yields, soil properties, nitrogen and energy efficiency, as well as greenhouse gas emissions (GGE) were investigated for the period of 1994-2005. On average conventional tillage (CT) produced yields of 8.03 (N1), 8.82 (N2) and 8.88 (N3) GE (grain equivalents) ha(-1) yr(-1); reduced tillage (RT1) yields of 7.82 (N1), 8.54 (N2) and 9.10 (N3) GE ha(-1) yr(-1) and RT2 yields of 6.9 (Ni), 7.82 (N2) and 8.6 (N3) GE ha(-1) yr(-1). The benefit of reduced soil tillage over CT. is a lower consumption of diesel fuel (reduced by 35%) and fossil energy (by 10%), C sequestration and N accumulation in soil. We recorded the highest soil organic carbon (SOC) in the RT2 treatments with the lowest tillage intensity (52.5 Mg ha(-1)) and the lowest SOC reserves in the CT plowed treatments (41.1 Mg ha(-1)). During the reported period, SOC reserves in the plowed treatments decreased by about 300 kg C ha-1 yr-1, whereas they increased by 150-500 kg C ha(-1) yr(-1) in the chiseled treatments. Similar results were achieved with the soil organic nitrogen (SON) reserves based on the type of tillage. This amounted to around 4000 kg ha-1 (CT), 4500 kg ha (RT1) and more than 5000 kg N ha-1 (RT2). The RT1 treatments were marked by high nutrient and energy efficiency. The disadvantage of reduced tillage lies in higher ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1161-0301 1873-7331 |
| العلاقة: | info:eu-repo/semantics/altIdentifier/wos/WOS:000320746500007; info:eu-repo/semantics/altIdentifier/isbn/1161-0301; info:eu-repo/semantics/altIdentifier/pissn/1161-0301; info:eu-repo/semantic; https://push-zb.helmholtz-muenchen.de/frontdoor.php?source_opus=25969Test; urn:isbn:1161-0301; urn:issn:1161-0301; urn:issn:1873-7331 |
| DOI: | 10.1016/j.eja.2013.02.012 |
| الإتاحة: | https://doi.org/10.1016/j.eja.2013.02.012Test https://push-zb.helmholtz-muenchen.de/frontdoor.php?source_opus=25969Test |
| حقوق: | info:eu-repo/semantics/closedAccess |
| رقم الانضمام: | edsbas.96E4B1CC |
| قاعدة البيانات: | BASE |
| تدمد: | 11610301 18737331 |
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| DOI: | 10.1016/j.eja.2013.02.012 |