Zum Mechanismus der Marmorierung und Konkretionsbildung in Stauwasserböden     

H.-P. Blume 《植物养料与土壤学杂志》1968,119(2):124-134

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Konzeptbodenkarten für den städtischen Raum     

Ralf Grenzius  Prof. Dr. Hans-Peter Blume 《植物养料与土壤学杂志》1993,156(3):209-212

Conception soil maps for urban areas The demand for soil maps increased strongly during the last years. This concerns urban soils, too. Conception soil maps constructed from a lot of basic informations (basic maps and point data) are the alternative to traditional soil mapping, which is expensive in time and money for urban areas. Further informations are to evaluate maps from these conception soil maps. Using graphic information-systems is advantageous for construction and evaluation.  相似文献   

Weinbau-Standortkarte Rheingau 1:5000, Blätter Kiedrich und Hallgarten/Oestrich,Hess. Landesamt für Bodenforsch., Wiesbaden 1983, je DM 7,-.     

H.-P. Blume 《植物养料与土壤学杂志》1985,148(1):112-112

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Diercks,R. und R. Heitefuss (Hrsg.): Integrierter Landbau. BLV München 1990; 420 Seiten, 132 Tab., 138 Abb., gebunden,DM 76,-.     

H.-P. Blume 《植物养料与土壤学杂志》1991,154(3):239-239

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Einfluß der Erosion auf die Standortproduktivität im Silomaisanbau     

J. Goeck    E. Cordsen    G. Geisler  H.-P. Blume 《Journal of Agronomy and Crop Science》1988,161(1):57-64

Influence of erosion on productivity of maize ( Zea mays L.) cultivation
Accelerated erosion was monitored in Eastern Schleswig-Holstein (F.R.G.) during the last decades. The objective of this study was to compare agricultural productivity of upper, middle and base slope segments to the respective soil parameters, reflecting results of long-term erosion.
Five soil catenas were surveyed. Each catena was divided into three segments representing an eroded area (upper segment), an area with an equilibrium between erosion, accumulation and soil development (middle segment) and an area with accumulation (base slope segment).
In 1986 soil qualities, growth characters and yield components of maize were analysed for each slope segment. At eroded slope segments vegetation cover and yield were significantly lower than at middle and base slope segments. Middle slope segments (equilibrium between erosion, accumulation and soil development) snowed balanced soil quality parameters and high maize yields with a desired combination of yield components.  相似文献   

The area under the disease progress stairs: calculation, advantage, and application     

Simko I  Piepho HP 《Phytopathology》2012,102(4):381-389

The area under the disease progress curve (AUDPC) is frequently used to combine multiple observations of disease progress into a single value. However, our analysis shows that this approach severely underestimates the effect of the first and last observation. To get a better estimate of disease progress, we have developed a new formula termed the area under the disease progress stairs (AUDPS). The AUDPS approach improves the estimation of disease progress by giving a weight closer to optimal to the first and last observations. Analysis of real data indicates that AUDPS outperforms AUDPC in most of the tested trials and may be less precise than AUDPC only when assessments in the first or last observations have a comparatively large variance. We propose using AUDPS and its standardized (sAUDPS) and relative (rAUDPS) forms when combining multiple observations from disease progress experiments into a single value.  相似文献   

Environmental Controls on the Fate of Escherichia coli in Soil     

M. Habteselassie  M. Bischoff  E. Blume  B. Applegate  B. Reuhs  S. Brouder  R. F. Turco 《Water, air, and soil pollution》2008,190(1-4):143-155

An improved understanding of factors that influence the survival and/or growth of Escherichia coli (E. coli) in soil is essential to allow the formation of land management practices to control the spread of the pathogenic strains of the bacteria, whose transmission to fresh produce is a threat to food safety. Persistence of E. coli in soils held at different water potentials and with carbon additions then subjected to post-freezing incubation temperatures and in the presence of Klebsiella terrigena (K. terrigena) were investigated. Soil samples adjusted to different water potentials (?0.03, ?0.1 and ?1.5 MPa) were inoculated with a multi-antibiotic resistant strain of E. coli (E. coli 2+), which allowed recovery of the organism from soil samples. In addition to manipulation of water content, different C levels were added and samples were frozen for varying lengths of time, thawed and incubated. In freezing studies, initial soil moisture content significantly affected E. coil 2+ survival in soils following thawing, resulting in lower survival rate (k) at water potential of ?0.03 than at ?0.1 and ?1.5 MPa. The effect of length of freezing time was significant only at ?0.03 MPa. Glucose addition at 1.25 mg C g^?1 improved survival rate versus glucose at 0.125. The low level glucose increased die-off rate versus no addition, suggesting that unless amendments provide C above a certain threshold level, they might facilitate the death of the bacteria. E. coli 2+ survival improved in the presence of K. terrigena at 6°C but not at 23°C. Persistence of E. coli under the interactive influence of various environmental factors highlights the urgency and importance of understanding its potential for transmission to fresh produce and water bodies.  相似文献   

Harmonization of Pesticide Residue Analytical Methods by the Technical Committee 275 of the Comité Européen de Normalisation (CEN/TC     

Hans-Peter Thier 《Pest management science》1997,50(2):151-155

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Phytotoxin produced by the netted scab pathogen, <Emphasis Type="Italic">Streptomyces turgidiscabies</Emphasis> strain 65, isolated in Sweden     

Masahiro Natsume  Asaho Nagagata  Marja Aittamaa  Naoko Okaniwa  Panu Somervuo  Hans-Peter Fiedler  Jan F. Kreuze  Veli-Matti Rokka  Hans Bång  Hiroshi Kawaide  Jari P. T. Valkonen 《Journal of General Plant Pathology》2018,84(2):108-117

Streptomyces spp. are a highly diverse group of bacteria most of which are soil-inhabiting saprophytes. A few are plant pathogens that produce a family of phytotoxins called thaxtomins and cause significant economic losses, e.g., by reducing the marketability of potato tubers (Solanum tuberosum). In northern Europe, S. scabies, S. turgidiscabies and S. europaeiscabiei are the most common plant pathogenic species. In this study, a Streptomyces strain isolated from a netted scab lesion on a tuber of potato cv. Bintje in northern Sweden was identified as S. turgidiscabies but was found to differ in the genomic region carrying genes required for thaxtomin biosynthesis. Our results showed that the strain did not produce thaxtomin but rather phytotoxin fridamycin E, which is an anthraquinone novel to plant pathogenic Streptomyces spp. Fridamycin E was shown to reduce or inhibit sprouting of potato microtubers in vitro. While fridamycin E is known to have antibiotic activity against Gram-positive bacteria, the inhibitory activity of fridamycin E on plant growth is a novel finding.  相似文献   

DNA Quantity and Quality in Remnants of Traffic-Killed Specimens of an Endangered Longhorn Beetle: A Comparison of Different Methods     

Hans-Peter Rusterholz  Sylvain Ursenbacher  Armin Coray  Urs Weibel  Bruno Baur 《Journal of insect science (Online)》2015,15(1)

The sampling of living insects should be avoided in highly endangered species when the sampling would further increase the risk of population extinction. Nonlethal sampling (wing clips or leg removals) can be an alternative to obtain DNA of individuals for population genetic studies. However, nonlethal sampling may not be possible for all insect species. We examined whether remnants of traffic-killed specimens of the endangered and protected flighless longhorn beetle Iberodorcadion fuliginator (L., 1758) can be used as a resource for population genetic analyses. Using insect fragments of traffic-killed specimens collected over 15 yr, we determined the most efficient DNA extraction method in relation to the state of the specimens (crushed, fragment, or intact), preservation (dried, airtight, or in ethanol), storage duration, and weight of the sample by assessing the quantity and quality of genomic DNA. A modified cetyltrimethyl ammonium bromide method provided the highest recovery rate of genomic DNA and the largest yield and highest quality of DNA. We further used traffic-killed specimens to evaluate two DNA amplification techniques (quantitative polymerase chain reaction [qPCR] and microsatellites). Both qPCR and microsatellites revealed successful DNA amplification in all degraded specimens or beetle fragments examined. However, relative qPCR concentration and peak height of microsatellites were affected by the state of specimen and storage duration but not by specimen weight. Our investigation demonstrates that degraded remnants of traffic-killed beetle specimens can serve as a source of high-quality genomic DNA, which allows to address conservation genetic issues.  相似文献