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Article
Changes in Weed Communities, Herbicides, Yield Levels and Effect of Weeds on Yield in Winter Cereals Based on Three Decades of Field Experiments in South-Western Germany
Arable crop** practices including chemical weed control changed considerably over the last decades in south-western Germany affecting weed communities and weed-crop interference.
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Article
Rückgang von Ackerunkräutern in Baden-Württemberg – ein Vergleich von vegetationskundlichen Erhebungen in den Jahren 1948/49, 1975–1978 und 2011 im Raum Mehrstetten – Empfehlungen für Landwirtschaft und Naturschutz
Seit Beginn des Ackerbaus in Mitteleuropa bis Mitte des letzten Jahrhunderts ist die Anzahl der Ackerwildkrautarten aufgrund der vielfältigen und relativ extensiven landwirtschaftlichen Pflanzenproduktion deut...
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Chapter and Conference Paper
Enhancement of micro Unmanned Aerial Vehicles for agricultural aerial sensor systems
Micro Unmanned Aerial Vehicles (UAV) are used in a variety of agricultural research applications. However, UAVs are often not designed to interact with their attached sensor devices. This circumstance leads to...
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Chapter and Conference Paper
Improving the determination of plant characteristics by fusion of four different sensors
Many different sensors have been proposed to estimate plant status parameters like nutrition status, coverage or plant size. Such parameters are key factors for precise management. This study combined four dif...
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Chapter and Conference Paper
Weed-crop discrimination using LiDAR measurements
In this paper, we propose a new approach for discriminating maize and weed plants from soil surface, evaluating the accuracy and performance of a LiDAR sensor for vegetation detection using distance and reflec...
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Article
Warum Untersaaten und Zwischenfrüchte wieder Bedeutung zur Unkrautregulierung in Europäischen Ackerbausystemen bekommen
Die positiven Wirkungen von Zwischenfrüchten und Untersaaten auf die Bodenstruktur, das Bodenlebewesen und den Nährstoffhaushalt sowie deren wirksamer Effekt gegen Unkraut sind vielfach belegt. In europäischen...
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Article
An on-farm approach to quantify yield variation and to derive decision rules for site-specific weed management
Grain yield often varies within agricultural fields as a result of the variation in soil characteristics, competition from weeds, management practices and their causal interactions. To implement appropriate ma...
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Article
Site-Specific Weed Control in Maize, Sugar Beet, Winter Wheat, and Winter Barley
A four-year study of site-specific weed control is presented in this paper. Weed seedling distribution was sampled and mapped prior to and after post-emergence herbicide application in four fields planted with...
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Article
Abstracts of presentations on selected topics at the xlvth international plant protection congress (IPPC) July 25–30, 1999
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Article
Diffractive dijet production at HERA
Interactions of the type ep → eXY are studied, where the component X of the hadronic final state contains two jets and is well separated in rapidity from a leading baryonic system Y. Analyses are performed of bot...
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Article
Human tumor cell modification by virus infection: an efficient and safe way to produce cancer vaccine with pleiotropic immune stimulatory properties when using Newcastle disease virus
Direct infection of tumor cells with viruses transferring protective or therapeutic genes, a frequently used procedure for production of tumor vaccines in human gene therapy, is an approach which is often limi...
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Article
Measurement of the inclusive di-jet cross section in photoproduction and determination of an effective parton distribution in the photon
The double-differential inclusive di-jet cross section in photoproduction processes is measured with the H1 detector at HERA. The cross section is determined as a function of the average transverse jet energyE ...
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Article
Observation of events at very high Q2 in ep collisions at HERA
Measurements of ep scattering with squared 4—momentum transfer Q2 up to 35000 GeV2 are compared with the expectation of the standard deep-inelastic model of lepton—nucleon scattering (DIS). For Q2 > 15000 GeV2, N
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Article
Diffraction dissociation in photoproduction at HERA
A study is presented of the process γp → XY, where there is a large rapidity gap between the systems X and Y. Measurements are made of the differential cross section as a function of the invariant mass M ...
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Chapter
Methods for the Extraction and Detection of Trace Organosilicon Materials in Environmental Samples
Silicone manufacturers worldwide have organized to study the environmental impact of organo-silicon materials, focusing primarily on polydimethylsiloxanes (PDMS), which constitute the largest source of organos...
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Article
Charged particle multiplicities in deep inelastic scattering at HERA
Using the H1 detector at HERA, charged particle multiplicity distributions in deep inelastice + p scattering have been measured over a large kinematical region. The...
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Article
InclusiveD 0 andD*± production in neutral current deep inelasticep scattering at HERA
First results on inclusive \(\mathop {D^0 }\limits^{( - )} \) andD*± production in neutral current deep inelasticep ...
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Article
A search for squarks of Rp-violating SUSY at HERA
A search for squarks ofR-parity violating supersymmetry is performed inep collisions at HERA using H1 1994e + data. Direct single production of squarks of each generation bye +-qua...
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Article
Jets and energy flow in photon-proton collisions at HERA
Properties of the hadronic final state in photoproduction events with large transverse energy are studied at the electron-proton collider HERA. Distributions of the transverse energy, jets and underlying event...
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Article
Measurement of the total photon proton cross section and its decomposition at 200 GeV centre of mass energy
We present a new measurement of the total photoproduction cross section performed with the H1 detector at HERA. For an average centre of mass energy of 200 GeV a value of σ tot ...
