Maize Growth Stages Pdf

Damage from hail, wind and leaf-feeding insects can reduce the rows on the cob. Despite a very large second leaf, on the plant in the first photo, the collar is not fully exposed. The plant is now in its final critical production stage and channels carbohydrates to the cob. This starch will begin to harden at the top of the kernel and work down towards the cob.

Crop Production

Seed Germination Now that the seed is in the soil, it will begin to absorb water and begin to swell. The left row has a higher amount of residue covering the row compared with the row on the right. To avoid nutritional deficiencies, top-dress with nitrogen, ideally completing this before the eight-leaf stage. The silks are now beginning to dry and darken to a brownish color.

Maize production Managing critical plant growth stages

Also, the inner fluid now has a milky texture, which is caused by accumulating starch. Send this to a friend Your email Recipient email Send Cancel. Each internode will develop a cob, although usually only the top one or two cobs produce the harvest. Under non-stressful conditions, the time between new leaves will decrease as the season progresses.

The following information highlights various stages of growth and development of corn throughout the growing season and various problems during planting and germination. Full development is achieved when the collar of the leaf is fully visible. The plant, about a week away from silk emergence, develops rapidly.

Planting Conditions It is important discuss seed placement at planting before we reach plant growth. Environmental conditions are very important during this growth stage. Managing critical plant growth stages.

Maize production Managing critical plant growth stages

This stage occurs when silks are visible outside the husks. The yield potential and the number of kernel rows per cob are determined. The number of kernels and cob size depends on the time requirements of the genetics involved.

The hard starch layer has now reached the cob and a black abscission layer, called the black layer, has now formed. This stage of kernel development is directly linked to potential damage if stress occurs. Located below the seed is the radicle. Residue will not only further delay emergence, but can also cause uneven stands, which can also decrease yields. If soil temperatures are too cool, elongation will be slow and emergence will be delayed.

Crop Production

Planting shallow in this situation places the seed in an area of higher soil temperatures, which will aid in faster germination. Prolific hybrids are usually more stable under stress, as cob development is less restricted than in single-cobbing hybrids under the same conditions. Avoid root damage when applying fertiliser. Due to this, the left row has a less uniform stand. Dry matter accumulation is occurring at a very high rate now.

Kansas State University

Kansas State UniversityCorn Growth & Development

The likelihood of this plant surviving at this point is low. Lack of moisture can cause the silks to become too dry and can greatly limit their ability to transfer pollen. The plant is ready to start storing carbohydrates in the endosperm and dry matter quickly accumulates in the kernels. Leaf diseases can also be a problem.

Good weed control in the early development stages contributes greatly to the success of a maize crop. Maize is sensitive to stress at this time. The maize plant depends largely on nature to shape its growth, development and yield. While these two plants look similar, shiv chalisa in hindi pdf free they are not at the same growth stage.

When determining the number of leaves on a corn plant, the flag leaf should be the first leaf counted. The picture illustrates the radicle beginning to elongate, approximately ten days after planting. Pictured are the developing mesocotyl and coleoptile. At this time, the growing point of the plant is located below the soil surface.

But it can delay the growth period by a few days. The plant is most vulnerable to stress during silking, when important pollination events are occurring.

Maize growth stages pdfMaize production Managing critical plant growth stages

Stress at this point can reduce the number, size and weight of the harvestable kernels. In the event of crusting occurring in the field, rainfall is usually the best method to solving the problem. Soil moisture also requires consideration at planting. The number of leaves that are completely developed determine the vegetative stage the plant is at. Try to keep the plants green for as long as possible to ensure they spend as long as possible in each reproductive stage, maximising dry matter accumulation.

Corn Growth & Development

Unfavorable conditions early in the season will limit leaf size, which will decrease photosynthesis, while stress later in the season can affect pollination in the form of kernel size and number. Usually, the ear shoots that are located higher on the plant are those that will develop into harvestable ears.