When is the best time to apply corn growth regulator?

Abstract You can choose to spray the growth regulator when the corn has 6-12 leaves. You can spray the upper leaves of the plant, but do not spray the whole plant. This can effectively promote full corn kernels and increase the number and weight of kernels. Growth regulator is one of the methods for high corn yield. It is generally convenient and effective, and can increase yield by about 20%-30% per mu, with low input and high benefit.

1. When is the suitable time to apply corn growth regulator

1. So-called growth regulation means spraying the growth regulator when the corn has 6-12 leaves. During this period, you can spray the upper leaves of the plant, which helps shorten the corn internodes, produce an extra layer of brace roots, and resist lodging. At the same time, it can also promote nutrients to concentrate on developing large ears, prevent barren ears, and achieve super-high yield with long ears.

2. Corn growth regulation is suitable for fields with relatively good water and fertilizer conditions. In fields generally severely affected by wind damage, corn is prone to lodging. If the temperature in the later growth stage is relatively low, which is unfavorable for grain filling and for regions carrying out large-area mechanical harvesting, then using chemical regulation technology in corn production can be more beneficial.

3. For chemically regulated corn fields, attention should also be paid to improving sowing quality and strengthening field management, which helps promote plant growth and development and make spatial distribution uniform and consistent.

2. Specific effects of growth regulator

1. Dwarfing the plant

It can effectively reduce plant height, generally by about 40cm, and at the same time lower ear height by about 10cm, which helps increase ear weight and planting density, promote the corn center of gravity to move downward, and produce shorter stalks, thicker stems, more roots, and deeper roots. It increases the root system's grip on the soil and reduces lodging.

2. Transformation between vegetative growth and reproductive growth

Spraying growth regulator can promote thickening of corn leaves, increase chlorophyll content and photosynthesis, and at the same time effectively promote corn growth and development. It can also regulate and promote metabolism, so that the vegetative organs and reproductive organs of corn receive reasonable nutrient distribution, control vegetative growth, and promote reproductive growth.

3. Strong drought resistance and stress resistance

It can promote more roots and deeper roots in corn, strong water and fertilizer absorption capacity, and can also absorb more water from the soil, prompting the plant to retain more water. This helps improve the corn's own immunity, improve stress resistance, and ensure healthy corn growth.

4. Long ears and many kernels

It can promote full corn kernels, increase the number and weight of kernels, with no bald tips and no shriveled grains. It can generally increase yield by about 20%-30% per mu, with low input cost and relatively high benefit. Growth regulator is one of the methods for high corn yield, and it is convenient and effective.

3. Precautions for applying growth regulator

1. The concentration used must be strictly controlled, and the dosage must not be increased at will.

2. Growth regulator must not be used on fields with poor growth.

3. During this period, do not spray repeatedly or miss spraying. Do not spray in drought. You can spray the upper leaves of corn, but do not spray the whole plant.

4. The solution should be used immediately after mixing and must not be stored for a long time.