Can additional N fertiliser ameliorate the elevated CO2‐induced depression in grain and tissue N concentrations of wheat on a high soil N background?          下载免费PDF全文

M. Tausz  R. M. Norton  S. Tausz‐Posch  M. Löw  S. Seneweera  G. O'Leary  R. Armstrong  G. J. Fitzgerald 《Journal of Agronomy and Crop Science》2017,203(6):574-583

Elevated CO₂ stimulates crop yields but leads to lower tissue and grain nitrogen concentrations [N], raising concerns about grain quality in cereals. To test whether N fertiliser application above optimum growth requirements can alleviate the decline in tissue [N], wheat was grown in a Free Air CO₂ Enrichment facility in a low‐rainfall cropping system on high soil N. Crops were grown with and without addition of 50–60 kg N/ha in 12 growing environments created by supplemental irrigation and two sowing dates over 3 years. Elevated CO₂ increased yield and biomass (on average by 25%) and decreased biomass [N] (3%–9%) and grain [N] (5%). Nitrogen uptake was greater (20%) in crops grown under elevated CO₂. Additional N supply had no effect on yield and biomass, confirming high soil N. Small increases in [N] with N addition were insufficient to offset declines in grain [N] under elevated CO₂. Instead, N application increased the [N] in straw and decreased N harvest index. The results suggest that conventional addition of N does not mitigate grain [N] depression under elevated CO₂, and lend support to hypotheses that link decreases in crop [N] with biochemical limitations rather than N supply.  相似文献   

W?lder und Waldwirtschaft in Bulgarien     

Karl Maximilian Müller 《Forstwissenschaftliches Centralblatt》1928,50(6):177-192

Ohne Zusammenfassung  相似文献   

Correction to: Nordic forest management towards climate change mitigation: time dynamic temperature change impacts of wood product systems including substitution effects     

Schulte  Maximilian  Jonsson  Ragnar  Hammar  Torun  Stendahl  Johan  Hansson  Per-Anders 《European Journal of Forest Research》2022,141(5):865-866

European Journal of Forest Research -  相似文献   

Nordic forest management towards climate change mitigation: time dynamic temperature change impacts of wood product systems including substitution effects     

Schulte  Maximilian  Jonsson  Ragnar  Hammar  Torun  Stendahl  Johan  Hansson  Per-Anders 《European Journal of Forest Research》2022,141(5):845-863

European Journal of Forest Research - Climate change mitigation trade-offs between increasing harvests to exploit substitution effects versus accumulating forest carbon sequestration complicate...  相似文献   

Relating genetic variation of ecologically important tree traits to associated organisms in full-sib aspen families     

Frauke Kleemann  Maximilian von Fragstein  Barbara Vornam  Annika Müller  Christoph Leuschner  Andrea Holzschuh  Teja Tscharntke  Reiner Finkeldey  Andrea Polle 《European Journal of Forest Research》2011,130(5):707-716

Knowledge on phenological, morphometric, and phytochemical variation of local progenies of European aspen (Populus tremula, L.) is limited. The goal of this study was to characterize variation in growth and ecologically important leaf properties in aspen full-sib families in relation to interacting organisms (mycorrhiza, endophytes, and insects) and to determine whether these interactions were affected by soil application of a systemic fungicide. In local progenies, within-family variation of neutral molecular genetic markers (nuclear microsatellites) was higher than between families. Significant variation in growth, production of phenolic defensive compounds and other phytochemical leaf traits was found between families. Phenolic compounds showed clear negative correlation with generalist herbivores, but did not result in negative trade-off with biomass production. Differences in mycorrhizal colonization were not found among full-sib families and application of a systemic fungicide suppressed neither mycorrhizal colonization nor infestation with insects. However, a strong suppression of endophytes occurred, whose long-term consequences may require attention when fungicides are used in agroforestry plantations.  相似文献   

Experimental model for removal of snake venom via hemoperfusion in rats     

Maximilian Estevan Oliveira  Jssica Campanholi  Roberta Lima Cavalcante  Felipe Silveira Moreno  Edson Hideaki Yoshida  Murilo Melo Juste Dini  lvio Franco de Camargo Aranha  Jos Carlos Cogo  Lourdes Dias  Stephen Hyslop  Denise Grotto  Valquíria Miwa Hanai‐Yoshida  Yoko Oshima‐Franco 《Journal of Veterinary Emergency and Critical Care》2020,30(3):286-294

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Anatomical characteristics of thermally modified Eucalyptus nitens wood in an open and closed reactor system     

Maximilian Wentzel  Tim Koddenberg  Holger Militz 《Wood material science & engineering》2020,15(4):223-228

ABSTRACT

Eucalyptus nitens specimens were thermally modified under open and closed systems. The anatomical characteristics from selected modifications that presented similar mass losses were investigated by analyzing images taken from scanning electron microscopy, transmission light microscopy, and X-ray micro-computed tomography. Wood cell wall thickness, fiber, and lumen area were measured and compared to unmodified specimens, and the crack formation after modification was also analyzed. There was only a slight decrease in the measured characteristics when compared to unmodified specimens. The wood cell wall thickness was less affected than the fiber and lumen areas, and both modifications presented similar crack formations. Overall, there were no significant differences between open and closed system modifications in the anatomical structure.  相似文献   

Simulation of soil response to acidic deposition scenarios in Europe     

W. De Vries  G. J. Reinds  M. Posch  J. Kämära 《Water, air, and soil pollution》1994,78(3-4):215-246

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The Effects of Acetazolamide on Exercise Performance at Sea Level and in Hypoxic Environments: A Review     

Alexander M. Posch  Stewart Dandorf  David C. Hile 《The Forestry Chronicle》2018,29(4):541-545

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IMAGING DIAGNOSIS—CONCENTRIC PERIRADICULAR LIPOMA CAUSING LUMBAR NERVE ROOT COMPRESSION IN A DOG          下载免费PDF全文

Andrea M Wahle  Karina Raith  Barbara Posch  Lina Eddicks  Kaspar Matiasek  Konrad Jurina 《Veterinary radiology & ultrasound》2017,58(1):E6-E10

An 11‐year‐old, male neutered Jack Russell Terrier was presented with a nerve root signature of the right pelvic limb. Magnetic resonance imaging revealed a well demarcated, ovoid, extramedullary mass at the level of the L7 vertebral body. This showed, compared to normal spinal cord, hyperintense signal on T1‐ and T2‐weighted images, which was suppressed on gradient echo short tau inversion recovery (GE‐STIR) images. Additionally, the mass was characterized by a fat density on computed tomography images. Histopathology of the surgically excised mass was consistent with concentric periradicular lipoma, which has not been described in domestic animals yet.  相似文献