In a special Soil Measurement & Methods section of Vadose Zone Journal, scientists review the state-of-the-art tools for measuring water content in soil
Growing grapes for wine is tightly linked to soil moisture: too little, and the crop can be lost, but an oversupply of water tends to favor leaf development at the expense of fruit quality. It is often difficult to determine which portions of the vineyards require more or less irrigation due to California wine countrys natural geologic variations that control the moisture in soil. These natural variations, which appear over short distances, hamper the ability to map soil moisture of an entire field using conventional measurement techniques. Enter GPR, or ground penetrating radar.
In recent years, many researchers have made progress in the use of GPR as an alternative for TDR, time domain reflectometers, for determining field-scale variations of soil water content. These early TDR sensors came about in the 1980s and utilized the influence of water on the velocity of electromagnetic waves to obtain accurate measurements of soil water content; however, assessment of an entire field remained a tedious task because of the need to install a large number of TDR sensors to adequately cover the field. To overcome these difficulties, scientists have used GPR methods to map a fields varied soil moisture, as in the case with the California vineyards.
Light green plants save nitrogen without sacrificing photosynthetic efficiency
21.11.2017 | Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign
Filling intercropping info gap
16.11.2017 | American Society of Agronomy
High-precision measurement of the g-factor eleven times more precise than before / Results indicate a strong similarity between protons and antiprotons
The magnetic moment of an individual proton is inconceivably small, but can still be quantified. The basis for undertaking this measurement was laid over ten...
Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...
The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.
Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
15.11.2017 | Event News
15.11.2017 | Event News
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24.11.2017 | Physics and Astronomy
24.11.2017 | Health and Medicine
24.11.2017 | Earth Sciences