All endosperm of the seed corn is in the center, with a layer of hard endosperm is covered. This type of corn flakes ripe, round, smooth and amber are. Volume growth of 80 to 100 days. The resulting thin ears and almost 8 seed row.
This type of corn is a mixture of hard and soft starch. It is the starchy endosperm, which is hard, more protein. This type of corn corn-rich regions of the United States of America usually comes into action. Dent corn cob is relatively large, and 16 to 30 rows of seeds. Physical characteristics of the grain, can be submerged to a point on the crown noted that due to the drying grain starchy endosperm is formed.
Soft corn or flour
Much of this type endosperm corn starch. Only a thin layer of hard endosperm contains the starch. It is not sinking flakes Unlike dent. The only corn because it is found in different colors, it is used to decorate dishes. Also, because it is soft endosperm, are the same shape and crushed it, is used in livestock feed.
This kind of sweet corn endosperm, sugar and corn endosperm sleek and unlike other, not starchy state. It was thin pericarp at maturity, its sugars into starch and then converted to dextrin. Sweet corn is a variety of fresh, canned and frozen consumed.
Waxy maize endosperm is apparently in the form of wax. Unlike other corn endosperm starch of 71 to 72 percent amylopectin and amylose content is 28 to 29, all of amylopectin waxy maize endosperm, which are sticky and soft mode as well. Apart from edible waxy corn, Chsbsazy also used in industry.
- Conditions for plant growth
Although corn is a tropical plant, can withstand extremely hot weather. The best environment for cultivation, an area that temperature for at least 3 to 4 months in a row, from 21 to 32 ° C. If the temperature mid-summer corn planting area, less than 18 ° C or less average summer temperatures of 13 degrees, the reduced plant growth and prolonged decrease in temperature, corn cultivation would be impossible.
Usually in the process of expanding leaves, pollination and seed formation often takes place in the hot summer months, corn needs a lot of water. The frequency of watering by soil, climate, etc., which can vary between 2 and 15 times. Corn in areas where annual rainfall is 250 to 2500 mm and the rain is possible.
The corn yield in soil deep, fertile and drained medium-textured more. Corn to lack of oxygen caused by moisture or groundwater layers is compressed, is very sensitive. The corn can grow in soil with a PH of 5.5 to 8. The PH is suitable for 6. PH less than 6 usually reduces the absorption of calcium in the plant.
Corn planting time
The best time for planting corn, when the soil temperature at a depth of 7 to 8 cm for 3 to 4 days in the spring, about 13 ° C. If the farmer is unable to measure soil temperature, the average air temperature at 7 am and 12 noon use.
Fertilizers, especially nitrogen fertilizers that contain phosphorus, potassium, calcium, magnesium and sulfur as well as manganese, iron, zinc and molybdenum are very essential to increase corn production. The best time to use fertilizer in spring before seeding or simultaneously with it. The best way to pour fertilizer near 5 cm of seed to a depth of 3 to 5 cm of seeds.
Pests and diseases of corn
Important disease of corn, corn smut is smut corn cluster. Of these patients, respectively, U.maydis and are Sphacelotheca reiliana. Common smut, infected leaves and stems and ear of corn smut, infected ear and female flowers or a mass of fungal spores to healthy tissue replaces the plant. Major diseases of maize leaves are leaf rust and bacterial wilt, rot seed, clusters, roots and stems of fungal diseases that are rare. Tyzam disinfect seed corn, Artvsayd and Araz useful in controlling this disease.
To harvest, moisture content should be between 20 to 25 percent. If you are going to feed their harvest, corn could be harvested humidity 25 to 28 percent. Nowadays, ear cropping with maize plants in China and also to separate flakes of corn, with kernels do now. China ear device, ear pods from plants Mychynd and it separates. Seeding machine separates the grain corn from the cob. For storing maize seeds need moisture to 17 percent. Storage temperature should not exceed 10 ° C. However, seeds with humidity over 17% can also be stored at higher temperatures.
The use of corn
White corn, yellow or a mixture of the two is found. White corn feeds usually Mrghvbtrnd. Corn has three parts: endosperm, germ and pericarp is. A protein found in grains such as environmental factors, plant type and growing conditions and depend on agriculture and between 8 and 15 percent. Corn zein protein is important in human nutrition play an important role.
The corn seed oil, which is 4 percent more in its germ. The various uses of corn. Of grinding corn, corn meal preparation that is used in the preparation of various dishes. The stalks and leaves of corn in the industries of paper and cardboard, as well as use of wallpaper. Of corn flour in the production of adhesives, soap and starch in dyeing industry, pharmaceutical, ink and plastics informatics.