The plant canopy analyzer pca lai 2000 has been in use for the nondestructive determination of leaf area index lai, and other structural attributes of vegetative canopies for about 25 years licor, 1989. Leaf growth and canopy development of three sugarcane. Lai2000 plant canopy analyzer instruction manual 1991. Measurement of oil palm lai by manual and lai2000 method. Both dhp and lai2000 provide ground measurements of effective lai laie, which tend to underestimate true lai in. Cor plant canopy analyzer pca lai2000 and its improved successors lai2200 and lai 2200c have. Manual on methods and criteria for harmonized sampling, assessment. The spatial scaling of clumping effects considered by the instrument is dependent on the sensors azimuthal view. Estimation of foliage clumping from the lai2000 plant canopy.
Plant area index pai measured with a licor lai2000 plant canopy analyser pca was calibrated with leaf area index lai in a young stand of eucalyptus grandis in the kwazulunatal midlands, south africa. Make sure to completely erase the old version of software and the driver before downloading the new version. View and download licor lai 2200 quick start manual online. The study shows that it was possible to rapidly determine lai using the lai 2000 plant canopy analyser. Measurements made above and below the canopy are used to determine the interception of light by the canopy at 5 zenith angles. Assessing water stress of desert tamarugo trees using in situ data and very high spatial resolution remote sensing authors. Lai2000 plant canopy analyzer instruction manual lincoln. Due to parts obsolescence, we will no longer perform factory service for the lai2200 after march 1, 2020. In recent years, new instruments have been developed in order to measure rapidly and reliably lai of plant canopies. One of the more often used is the lai 2000 plant canopy analyzer pca, li. Francesco vuolo,nikolaus neugebauer,salvatore falanga bolognesi,clement atzberger,guido durso.
Comparison of three leaf area index meters in a corn canopy. Par levels the instructions are for installing ci110 plant canopy analysis software version 6. The light as photosynthetically active radiation par of 900. Dec 20, 2005 plant area index pai measured with a licor lai 2000 plant canopy analyser pca was calibrated with leaf area index lai in a young stand of eucalyptus grandis in the kwazulunatal midlands, south africa. Winscanopy from regent caneye hemiview or aircraftsatellite remote sensing spectral methods e. Home meter environment products request a quote contact us. The sunscan plant canopy analyser is optimised to measure par in low regular canopies such as most agricultural crops. The sunscan plant canopy analyzer system uses field measurements of photosynthetically active radiation par in crop canopies to provide valuable information about leaf area index lai and biomass production. The plant canopy analyzer lai2000, lai2200 uses small hemispherical lenses for. Refer to manufacturers manual for a complete description anonymous 1989. Evaluation of four methods for estimating leaf area of. The amount of foliage in a vegetative canopy can be deduced from measurement of how quickly radiation is attenuated as it passes through the canopy. To do this, go to add or remove programs in your computers control panel.
The lai2000 plant canopy analyzer provides a rapid estimate of leaf area index lai, but its accuracy and utility for estimating soybean glycine max l. Paper open access measurement and estimation of leaf. The lai2000 plant canopy analyzer was discontinued in 2009 and replaced with our current model, the lai2200c plant canopy analyzer. Solar radiation 4001100 nm in per wm2 was mea sured with a type sz terrestrial pyranometer sensor li. Oct 31, 2014 foliage clumping can be estimated from logarithm averaging method in lai2000. Pdf measurement of oil palm lai by manual and lai2000 method. Licor lai2000 plant canopy analyzer cid digital plant canopy imager decagon sunfleck ceptometer demon 17 trac or hemispherical photos some systems include. Pdf performance of the lai2000 plant canopy analyzer in. The sunscan plant canopy analyzer is optimized for low regular canopies such as most agricultural crops. Lai data have been collected during the 3 years 19931995, using both direct littertraps and indirect methods lai2000 plant canopy analyzer, pca, licor, lincoln, ne, usa. Citeseerx scientific documents that cite the following paper. Agronomy free fulltext a mixed databased deep neural. The downside of these instruments is that they are quite expensive, both in the terms of purchase.
Lai of the forest was measured using an lai 2000 plant canopy analyzer licor, inc. Short communication performance of lai2200 plant canopy. The lai2200c plant canopy analyzer is the world standard for indirect leaf area index measurements. We evaluated shading as a way to allow pca measurements in direct sunlight and the influence of solar direction when using this procedure. Leblanc and chen, using a licor lai2000 plant canopy analyzer hemispheric sensor near ottawa, canada, suggested that the fourth ring 4758 from zenith alone is suitable for estimating effective lai under diffuse light conditions. Next, install the driver according to the instruction manual. Feb 17, 2010 measuring leaf area index licor lai2200c duration. Assessing water stress of desert tamarugo trees using in situ data and very high spatial resolution remote sensing. This study evaluated minimum plotsize requirements for manually defoliated soybean experiments using the lai 2000. Such use does not constitute an official endorsement or approval by the government of british columbia of any product or service to the exclusion of any others that may also be suitable. Lai 2200 measuring instruments pdf manual download. Application and transferability of a semiempirical relationship between two agricultural areas authors. The lai 2000 plant canopy analyzer was discontinued in 2009 and replaced with our current model, the lai 2200c plant canopy analyzer. Estimation of leaf area index for cotton canopies using the.
Significant correlations p download lai 2000 plant canopy analyzer operating manual read online read online lai 2000 plant canopy analyzer operating manual canopy images and estimate leaf area index lai and photosynthetically active radiation. Leaf area index lai was determined for each plot with the lai 2000 plant canopy analyzer licor, lincoln, ne according to the instructions described in the lai 2000 user manual. The new plant canopy imager ci110 captures wideangle canopy images while estimating leaf area index lai and measuring photosynthetically active radiation par levels. Estimation of leaf area index with the licor lai 2000 in. However, these optical instruments have been repeatedly found to underestimate lai of forests and discontinuous canopies where the spatial distribution of foliage. This study evaluated minimum plotsize requirements for manually defoliated soybean experiments using the lai2000. Optical methods for quantifying variation in lai of different palm ages were evaluated using lai2000 plant canopy analyser pca as an. The lai2000 plant canopy analyser pca is an instrument designed to measure lai of green canopies fig. One of the traditional assumptions of the predecessors to the. Instruction manual for fv2200, the file viewer software for the lai 2200c plant canopy analyzer. Our objective was to evaluate sampling procedures using the licor lincoln, ne lai 2000 plant canopy analyzer pca for nondestructive estimation of cotton lai on the southern high plains of texas. The plant canopy analyzer pca lai2000 has been in use for the nondestructive determination of leaf area index lai, and other structural attributes of vegetative canopies for about 25 years licor, 1989. Nov 16, 2001 the lai 2000 plant canopy analyzer provides a rapid estimate of leaf area index lai, but its accuracy and utility for estimating soybean glycine max l.
A brief description of the gap fraction method, the technique used by the licor plant canopy analyzers lai 2000, lai 2200, and lai 2200c. Specular reflection in the signal of lai2000 plant canopy. An approach that includes images from sentinel 2a as input and manual measurements of lai using an lai2000 plant canopy analyzer licor, inc. The lai2200 is the followup to the lai2000, which licor biosciences produced and sold for over 20 years. This rapid and nondestructive method saves labour when compared to manual measurements. Application and transferability of a semiempirical relationship between two agricultural areas. Andrade 1biological system engineering graduate program of biosystem engin eering, department of esalqusp, avenue padua dias, 11 piracic aba.
Many studies have relied on commercial instruments such as the lai 2000 plant canopy analyzer licor, accupar ceptometer decagon, and demon as well as hemispherical photography. Clevers,martin herold,edmundo acevedo,mauricio ortiz keywords. All readings were taken with the instrument level and at 1. The lai 2200c plant canopy analyzer is the world standard for indirect leaf area index measurements. The lai 2200 plant canopy analyzer computes leaf area index lai and a variety of other canopy structure attributes from radiation measurements made with a fisheye optical sensor. Agronomy journal abstract instrumentation evaluation of. Lai values were calculated according to millers 1967 derivation, which is the default method used by lai2000. The lai2200c consistently outperforms other methods in terms of flexibility, advanced features, accuracy, and ease of use. However, these optical instruments have been repeatedly found to underestimate lai of forests and discontinuous canopies where the spatial distribution of foliage elements is not random. The objective of this part of the manual is to provide harmonized and. Images liveupdate on the builtin capacitive monitor, providing instant data for verification and analysis with integrated software in the field under any daylight conditions. Ci110 plant canopy imager tools for applied plant science. Instruction manual for the fv2000 file viewer software for the lai2000 plant canopy analyzer. Agronomy journal abstract instrumentation evaluation of the.
New protocols for the lai 2200c an introduction to the light scattering correction for leaf area index measurements using the lai 2200, lai 2200c and the optional gps accessory. Evaluation of the modis lai algorithm at a coniferous forest. A relationship was observed between pca lai and direct lai with a correlation coefficient of r 0. There are several methods to measure how much light is intercepted by a canopy in order to determine if water loss is from evaporation or transpiration. The use of trade, firm, or corporation names in this publication is for the information and convenience of the reader. Cor plant canopy analyzer pca lai2000 and its improved successors lai2200 and lai2200c have. It consistently outperforms other methods such as ceptometry and hemispherical photography in terms of flexibility, advanced features, accuracy, and ease of use. Uninstall the plant canopy analysis system software and the ci110 driver usb tv device driver. The lai 2200c consistently outperforms other methods in terms of flexibility, advanced features, accuracy, and ease of use. Apr 23, 2018 the difference in lai between lai pca and lai scm for a shennong 265 and b nipponbare. Lai readings of a plant canopy analyzer at the measuring height. View and download licor lai2200 quick start manual online. The pca uses the gap fraction technique for the calculation of lai and mean inclination angle of foliage.
Lai2200c plant canopy analyzer the lai2000 and lai2200 has been that foliage absorbs all the. Digital hemispheric photography dhp and licors lai2000 plant canopy analyzer are groundbased optical instruments which indirectly measure lai, and assume a random foliage spatial distribution. The lai 2000 plant canopy analyzer is composed of a lai 2070 control unit and a lai 2050 sensor head. Tracing radiation and architecture of canopies trac manual. The objective of our study was to compare the lai estimates by three meters accupar, lai 2000, and sunscan to lai measured by destructive sampling. It should be noted, however, that the lai2000 converts canopy gap fraction into lai under the assumption of. Sensors like lai2000 plant canopy analyzers licor, inc. Short communication performance of lai2200 plant canopy analyzer on leaf area index of jatropha nut estimation 1b.
1117 1158 858 1224 869 1252 351 1402 201 484 136 690 1086 1247 456 1277 170 480 1394 580 849 851 596 267 372 586 375 1212 394 1439 1058 1154 279