MAIZE

Zea mays

Grasses [Poaceae]

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20th Aug 2011, Swettenham, Cheshire. Photo: © RWD
A maze of Maize, it is growing almost everywhere this last decade.


20th Aug 2011, Swettenham, Cheshire. Photo: © RWD
Standing about 5 to 8 feet tall on arable land, it is grown as a crop.


20th Aug 2011, Swettenham, Cheshire. Photo: © RWD
The leaves are very long, nearly linear, and peel off the single main stem at about 1 foot intervals.


20th Aug 2011, Swettenham, Cheshire. Photo: © RWD
The base of the leaves strongly clasp the stem, in the axils of which corn cobs (female axillary) grow topped by a mop of long hair (the silking ear), being the (extremely long, up to 20cm) styles of the female flower.


20th Aug 2011, Swettenham, Cheshire. Photo: © RWD
The sheaths have a fringe of short white hairs, especially near the top.


17th Sept 2009, Bispham Green, Lancs. Photo: © RWD
More mature cobs, the styles having now withered and browned. The leaves have a white central rib. The stems grow in sections, like grasses, of which it is a member.


17th Sept 2009, Bispham Green, Lancs. Photo: © RWD
The female flowers have enormously long styles, which turn reddish-pink.


20th Aug 2011, Swettenham, Cheshire. Photo: © RWD
The styles are covered in glandular red hairs.


20th Aug 2011, Swettenham, Cheshire. Photo: © RWD
Male panicle (tassel) up to 20cm long complete with side-branches.


20th Aug 2011, Swettenham, Cheshire. Photo: © RWD
The glumes (here red and green) are awnless. They have 2 florets and equal glumes.


20th Aug 2011, Swettenham, Cheshire. Photo: © RWD
Un-opened glumes.


1st Nov 2011, arable land near Bispham Green, Lancs. Photo: © RWD
When the very close and numerous green sheathes are peeled away, the corn on the cob id made visible. All the stamens originally ran up the whole length of the cob, several strands each between the vertical grooves between the corns, but peeling the sheathes disturbs them.


1st Nov 2011, arable land near Bispham Green, Lancs. Photo: © RWD
The familiar corns, yellow when ripe. Stray stamens sprawl across. This crop had not been harvested, possibly now for use as animal feed.


1st Nov 2011, arable land near Bispham Green, Lancs. Photo: © RWD
Showing its grass-descendancy: the 'joins' on the stems, of which there are several about 8 inches apart.


Before flowering, it has some similarities to : Common Millet (Panicum miliaceum) and to Sorghum (Sorghum bicolor), but not after flowering.

Uniquely identifiable characteristics

Distinguishing Feature :

No relation to : Corn [a cereal grass plant with similar name].

In the South of England Maize it is grown on a large scale as a fodder crop for animals, and on a small-scale as a grain crop (Sweet Corn or 'Corn on the Cob'). Note that Corn on the Cob is not Corn as grown as a cereal crop, although the two are in the same Grass family Poaceae. It escapes (bird-sown) from arable fields to grow on tips and waste ground. Sugar rich varieties are grown for human consumption as 'Sweet Corn' whereas 'Field Corn' varieties are used as fodder for animals and as chemical feedstocks for ethanol production and the like.

Flowering time can vary a great deal, and in drought conditions male and female flowers may flower asynchronously, which can result in great loss of crop (Corn cobs).

Maize uses a more efficient photosynthetic machinery called C4 photosynthesis, (where the initial product of photosynthesis is the four-carbon atom compound, oxaloacetate) which does not exhibit the same in-efficiency as C3 photosynthesis, where many of the captured photos are wasted in oxidising certain products within the plant!

The cob is the female flower, and is enveloped in several layers of leaves. The only visible part of the female flowers are the long styles that emerge from the top of the cob, first white, then turning yellow and red.

The vast majority of Maize grown in the UK seems destined, not for corn cobs at the dinner table, but for Corn Oil production. Corn Oil is used in cooking and frying, as well as in soap production, paint and rust-proofing for ferrous surfaces. Approximately 99% of Corn Oil consists of triglycerides, of which 55% is polyunsaturated fatty acid, 30% monounsaturated fatty acid and 15% saturated fatty acid.

Of the polyunsaturated fatty acids within Corn Oil, 98% is in the form of omega-6 Linoleic Acid and the remaining 2% made up of Omega-3 Linolenic Acid (alpha). Of the Monounsturated fatty acids, 98% is in the form of Oleic Acid

And of the saturated fatty acids, 80% is in the form of Palmitic Acid, 14% Stearic Acid and 3% Arachidic Acid.

ANY TEXT GOES HERE


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Zea
(Maize)

MAIZE

Zea mays

Grasses [Poaceae]

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