File:Up and down the field - geograph.org.uk - 982780.jpg
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Up_and_down_the_field_-_geograph.org.uk_-_982780.jpg (640 × 480 pixels, file size: 136 KB, MIME type: image/jpeg)
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[edit]DescriptionUp and down the field - geograph.org.uk - 982780.jpg |
English: Up and down the field. – After turning around at the end of the just harvested ridges the machines soon realign themselves once again to resume their task, this time headed in the opposite direction. What at first glance looks like stubble are the dried remains of flailed potato vines. On maturity of the tubers the potato vines are killed in order to terminate growth and hence control tuber size, and to set skin, which reduces skinning and bruising during harvest, and shrinkage in storage. The most common method of vine killing is chemical desiccation. Sometimes a flail vine shredder (982636, 982683) is used, an implement consisting of varying knife lengths to accommodate the contours of the hill and furrow, producing a very rapid vine kill by mechanically removing all but about 15 centimetres of the vines which are then removed by chemical desiccation. – The crop is now ready for harvesting and a root crop harvester (red) can be seen working in tandem with a trailer-pulling tractor (green). Most potato harvesters operate by cutting through the ground with a digger blade and forcing the dirt and potatoes over a series of chains that transport the potatoes while removing the dirt and vines. The potatoes are elevated by the chains and other conveyers so that they can reach a sufficient height to be dumped into a truck or trailer and hauled away. This process requires constant cooperation between the harvester and the tractor running side by side. |
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Date | |||
Source | geograph.org.uk | ||
Author | Evelyn Simak | ||
Permission (Reusing this file) |
![]() ![]() ![]() This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license. Attribution: Evelyn Simak
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Attribution (required by the license) InfoField | Evelyn Simak / Up and down the field / | ||
InfoField | Evelyn Simak / Up and down the field |
Camera location | 52° 47′ 02″ N, 1° 19′ 01″ E ![]() ![]() | View this and other nearby images on: OpenStreetMap | ![]() |
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Object location | 52° 47′ 02″ N, 1° 19′ 04″ E ![]() ![]() | View this and other nearby images on: OpenStreetMap | ![]() |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 02:16, 23 February 2011 | ![]() | 640 × 480 (136 KB) | GeographBot (talk | contribs) | == {{int:filedesc}} == {{Information |description={{en|1=Up and down the field After turning around at the end of the just harvested ridges the machines soon realign themselves once again to resume their task, this time headed in the opposite direction. |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot S3 IS |
Exposure time | 1/640 sec (0.0015625) |
F-number | f/4 |
Date and time of data generation | 14:03, 27 September 2008 |
Lens focal length | 18.6 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
File change date and time | 16:58, 27 September 2008 |
Y and C positioning | Centered |
Software used | Adobe Photoshop CS Windows |
Exif version | 2.2 |
Date and time of digitizing | 14:03, 27 September 2008 |
Image compression mode | 3 |
APEX shutter speed | 9.3125 |
APEX aperture | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 3.625 APEX (f/3.51) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression, red-eye reduction mode |
Color space | sRGB |
Focal plane X resolution | 2,844.4444444444 |
Focal plane Y resolution | 2,840.2366863905 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Landscape |