File:Crops in acid soil demo Potato 2017 05 09 6684.jpg
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DescriptionCrops in acid soil demo Potato 2017 05 09 6684.jpg |
English: A potato plant growing in very acid soil. Aluminium toxicity has severely stunted the root system, restricting plant growth. The visible symptoms (stunted new growth and deformed, necrotic leaf tips) are probably due to calcium deficiency; aluminium toxicity limits calcium uptake by plants. The soil is highly weathered and naturally acid with a soil pH (KCl salt solution) of 3.79, pH (water) of 3.84, and acid saturation 75%. This was taken in a field demonstration for the 5th International Symposium on Soil Plant Interactions at Low pH (2001). |
Date | |
Source | Own work |
Author | Alandmanson |
Camera location | 28° 33′ 17.98″ S, 29° 19′ 38.12″ E | View this and other nearby images on: OpenStreetMap | -28.554995; 29.327256 |
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Copied from a film slide in 2017.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 07:43, 1 August 2017 | 1,003 × 776 (175 KB) | Alandmanson (talk | contribs) | User created page with UploadWizard |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | Canon |
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Camera model | Canon EOS 7D Mark II |
Author | Alan Manson |
Exposure time | 1/100 sec (0.01) |
F-number | f/7.1 |
ISO speed rating | 400 |
Date and time of data generation | 09:20, 9 May 2017 |
Lens focal length | 320 mm |
Orientation | Normal |
Horizontal resolution | 350 dpi |
Vertical resolution | 350 dpi |
Software used | Digital Photo Professional |
File change date and time | 09:20, 9 May 2017 |
Y and C positioning | Centered |
Exposure Program | Manual |
Exif version | 2.3 |
Date and time of digitizing | 09:20, 9 May 2017 |
Meaning of each component |
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APEX shutter speed | 6.625 |
APEX aperture | 5.625 |
APEX exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 25 |
DateTimeOriginal subseconds | 25 |
DateTimeDigitized subseconds | 25 |
Supported Flashpix version | 1 |
Color space | sRGB |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Scene capture type | Standard |
GPS tag version | 0.0.3.2 |
Rating (out of 5) | 1 |