Best Time To Spray Roundup Ready Corn
Roundup Ready corn is a type of genetically modified corn that is resistant to the herbicide glyphosate, commonly known as Roundup. This makes Roundup Ready corn easier to manage and weed-free. However, to ensure optimal growth and yield, it is important to know the best time to spray Roundup Ready corn.
When to spray Roundup Ready corn before planting?
Before planting Roundup Ready corn, it is important to spray the field with Roundup to control any existing weeds. This process is called burndown. The best time to do this is 4 to 6 weeks before planting. This will give enough time for the Roundup to work before planting. Spraying before 4 weeks may not be effective, while spraying after 6 weeks may result in reduced yield due to competition from weeds.
When to spray Roundup Ready corn after planting?
If any weeds emerge after planting Roundup Ready corn, it is important to control them. The best time to spray Roundup after planting is when the corn plants have reached the V2 to V5 stage. This is when the corn has 2 to 5 visible leaves. At this stage, the corn plants are big enough to withstand the herbicide, and the weeds are small enough to be controlled without affecting the corn.
When to spray Roundup Ready corn before harvest?
Before harvesting Roundup Ready corn, it is important to control any weeds that may have germinated. The best time to spray Roundup before harvest is when the corn has reached the dent stage, or when the kernels have a small indentation at the top. At this stage, the corn is mature enough to tolerate the herbicide, and the weeds can be controlled with minimal impact on yield.
Precautions when spraying Roundup Ready corn
When spraying Roundup Ready corn, it is important to take precautions to avoid any negative impact on the environment or human health. Always read the label and follow the instructions carefully. Wear protective clothing, such as gloves and goggles, to avoid contact with the herbicide. Do not spray on windy days to avoid drift. Also, do not spray when the corn plants are under stress due to drought, frost, or disease, as this may result in reduced yield or crop injury.
Conclusion
In summary, the best time to spray Roundup Ready corn depends on whether it is before planting, after planting, or before harvest. Burndown should be done 4 to 6 weeks before planting, while post-emergence spraying should be done when the corn has 2 to 5 visible leaves. Pre-harvest spraying is best done when the corn has reached the dent stage. Taking precautions when spraying Roundup Ready corn is important to avoid any negative impact on the environment or human health.
