News
The new PPM-300 automatically measures light-photosynthesis curves. To determine species light climate and productivity. Also for determining screening light levels in greenhouses.
PPM and MLHD successful in China
7% Yield increase and 50-70% herbicide reduction in Maize.
History
1983: First chlorophyll fluorescence meausurements on grass growing on contaminated soil, with TNO-TPD
1985-93: First laser chlorophyll fluorescence measurements on trees, with IROE-CNR, Florence.
1990: Laser Environmental Active Fluorosensor LEAF developed in NL.
1992: First sale of EARS Plant
Photosynthesis Meter (PPM) to ESA.
1991-99: Several research projects with LEAF and PPM.
1998: Publication new fluorescence photosynthesis model (PDM).
1999: Patent on PPM.
2002-03: Project Plant-intelligent
Management Systems in Glass Horticulture (PIRSIG).
2004-08: PPM introduction in Chinese agriculture for reduction of herbicide use
The instrument
The EARS Plant Photosynthesis Meter (PPM) measures the photo-synthetic light use of plants. Because of its low weight, the instrument is very suitable for use in laboratory and field. Just press the button and the measurement is completed within a second. In addition long measuring series can be done automatically. For this reason the PPM has a wide range of applications in research, education and practice.
Earth ObservationTo: EARS Earth Environment site
| ApplicationsThe PPM has many applications, for example:
With the PPM practical results may be obtained, for example:
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