![]() Merris Terrestrial Chlorophyll Index (MTCI) During this time, measuring the chlorophyll content in plants is a more reliable way of determining the state of crops. It has been discovered by some growers that the need for swapping the NDVI for the chlorophyll index arises when the canopy closure is around 80% – about the time of the early phases of senescence. ![]() The saturation occurs because NDVI is used to estimate the density of the biomass, which does not always correlate with crop health. This is due to the high saturation of NDVI data in the images. Vegetation maps for variable rate application built based on the RCI index can be more precise than the NDVI-based maps. Brighter reflectance corresponds to a larger number of plant cells and, by extrapolation, to the greener area. The red-edge band is highly sensitive to the light reflected off of the cellular structure of a plant. The red-edge chlorophyll index is calculated using this band.ĬI red-edge = ρNIR/ρred_edge – 1 = ρ850/ρ730 – 1 Red-Edge Chlorophyll Index (CIred-Edge Or RCI)ĬIred-edge takes advantage of a narrow spectral band between the red and the near-infrared (NIR) bands of the plant reflectance range. The green chlorophyll index formula loks like this:ĬI green = ρNIR / ρgreen – 1 = ρ730/ρ530 – 1. GCI index is calculated as a ratio of the chlorophyll’s reflectance in the NIR band over the reflectance in the green band. The so-called green chlorophyll index’s main strength is that it can be successfully used for a wide range of plant species. ![]() Try now! Green Chlorophyll Index (CIgreen Or GCI) ![]() There are several varieties of CI in use today. Ag cooperatives find it easier to adjust their fertilizer plans over a large number of fields with the help of chlorophyll index data. The insurers can use the index to predict yield and base their loan payments on objective data. Input suppliers need to monitor the health of crops to test the performance of their inputs. Identification of nutrient deficiencies in plantsĪnd farmers are not the only ones who can benefit from using a CI.The applications of the chlorophyll index in precision agriculture are diverse: This information can be used to increase the field productivity, thus getting better yields and higher profits. Interpreted correctly, the CI can provide food producers with crucial information about crop development. For this, the chlorophyll vegetation index is used. Thus, chlorophyll is a good indicator of a plant’s health.īy measuring the spectral reflectance of chlorophyll in plants from space, we can monitor the state of crops on a regular basis. Plants rely on it to survive as it absorbs sun light which is then converted into sugars and starches via a process called photosynthesis. To understand just why it is so, we need to get a better look at the chlorophyll itself.Ĭhlorophyll is a pigment that gives plants their characteristic green color. Chlorophyll Index As An Agriculture AlgorithmĬhlorophyll index plays a very important role in modern agriculture. The data obtained thanks to this vegetation index also allows for season-to-season planning. In other words, the CI is a relatively accurate indicator of plant health and can be effectively used in nutrient management throughout the season. These bands are responsive to slight variations in the chlorophyll content and are consistent for most types of plants. In general, this index contains two separate bands: CIgreen and CIred-edge. The chlorophyll index (CI) is applied to calculate the total amount of chlorophyll in plants.
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