BACKGROUND Development of Verticillium wilt in olive, caused by the soil-borne fungus Verticillium dahliae, can be influenced by biotic and environmental factors. In this study we modeled i) the combined effects of biotic factors (i.e., pathotype virulence and cultivar susceptibility) and abiotic factors (i.e., soil temperature) on disease development and ii) the relationship between disease se...

AN ACTIVE SOURCE, NIR, REFLECTANCE SPECTROMETER IN A ROVER WHEEL, WATERWHEEL IR (WIR), FOR SOIL CHARACTERIZATION IN FUTURE MARS SURFACE EXPLORATION. John J. Freeman, Alian Wang, James Lambert, Department of Earth & Planetary Sciences and the McDonnell Center for the Space Sciences, Washington University, St. Louis, MO, 63130, Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA, 91109,...

[1] With reflectance spectroscopy, one is measuring only properties of the fine-grained regolith most affected by space weathering. The Lunar Soil Characterization Consortium has undertaken the task of coordinated characterization of lunar soils, with respect to their mineralogical and chemical makeup. It is these lunar soils that are being used as ‘‘ground truth’’ for all airless bodies. Modal...

1999) in a variety of locations and soil types. The AEM technique, however, may be more sensitive than tradiThere is not extensive research on the potential of anion exchange tional extractions to treatment differences at low soil membranes (AEMs) for determining available N in soils of turfgrass NO3–N concentrations (Pare et al., 1995; Wander et al., systems, nor on the use of reflectance mete...

Leaf area index (LAI) and water content (WC) in the root zone are two major hydro-meteorological parameters that exhibit a dominant control on water, energy and carbon fluxes, and are therefore important for any regional eco-hydrological or climatological study. To investigate the potential for retrieving these parameter from hyperspectral remote sensing, we have investigated plant spectral ref...

Abstract This article presents a literature review of studies utilising reflectance spectroscopy in geological research. We describe variety available spectral libraries together with providing examples diagrams, and explain the basic ranges. Geologists can use different methods data collection, for example, sensors mounted on satellites, airborne [including unmanned aerial vehicle (UAV) platfo...

The development of efficient algorithms for multispectral and multitemporal data analysis is still one of the most essential issues of remote sensing. The importance of this issue is related to the ever-increasing quantity of data provided by numerous radiometric and imaging sensors. Besides, the necessity to use various geoinformation technologies incorporating remote sensing, in-situ observat...