VEGETATION INDICES FOR IRRIGATED CORN MONITORING
نویسندگان
چکیده
منابع مشابه
Monitoring Winter Wheat Maturity By Hyperspectral Vegetation Indices
It is very important to harvest wheat in optimum time which greatly affects grain quality, mainly referred to as protein content in the research. Because either too early harvest shortens grain-filling process or too late harvest leads to yield losses and poor quality caused by high grain respiration rate in dry and hot wind weather and sprouting in rainy weather. Research was conducted during ...
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Acquiring multi-temporal spatial information on vegetation condition at scales appropriate for site-specific agricultural management is often complicated by the need for meticulous field measurements. Understanding spatial/temporal crop cover heterogeneity within irrigated croplands may support sustainable land use, specifically in areas affected by land degradation due to secondary soil salini...
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Satellite-derived vegetation indices extracted over locations representative of midwestern U.S. cropland and forest for the period 1990–94 are analyzed to determine the sensitivity of the indices to neutron probe soil moisture measurements of the Illinois Climate Network (ICN). The deseasoned (i.e., departures from multiyear mean annual cycle) soil moisture measurements are shown to be weakly c...
متن کاملUsing hyperspectral vegetation indices to estimate the fraction of photosynthetically active radiation absorbed by corn canopies
The fraction of photosynthetically active radiation (FPAR) absorbed by vegetation – a key parameter in crop biomass and yields as well as net primary productivity models – is critical to guiding crop management activities. However, accurate and reliable estimation of FPAR is often hindered by a paucity of good field-based spectral data, especially for corn crops. Here, we investigate the relati...
متن کاملDrought Monitoring Using Vegetation Indices and MODIS Data (Case Study: Isfahan Province, Iran)
Drought is a major problematic phenomenon mostly for semi-arid areas of Iran. During drought periods, reduction in vegetation levels causes such problems as soil erosion, surface runoff, flood risk, etc. Therefore, the assessment of drought effects on plant covers is the most important issue. This research was conducted in 2015 using the extracted vegetation indices from Moderate Resolution Ima...
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ژورنال
عنوان ژورنال: Engenharia Agrícola
سال: 2020
ISSN: 1809-4430,0100-6916
DOI: 10.1590/1809-4430-eng.agric.v40n3p322-333/2020