Flames have been employed to get rid of weeds since 1852. John A. Craig received a patent for the first piece of flame weeding equipment for sugarcane fields. By the 1930s, many people were using gas and oil burners to ᴋɪʟʟ weeds. Flame weeding is still a prevalent practice in corn and soybean fields today. It can be used both before and after the start of a new growth season. The burners travel through the fields between 5 and 7 mph.
The flame is not meant to burn the weeds entirely. A simple rise in internal cell temperature is all that is needed to inhibit photosynthesis and the growth of weeds. Temperatures between 500,000 and 1.2 million BTUs are considered acceptable. A typical cooktop burner produces about 12,000 BTUs. Flame weeding is possible as long as the existing crops are knee-high or higher.
The fact that we are getting the weed’s growing point and not that of maize or soybeans is one of the reasons this works so well. You must direct your heat or flame at the required spot.
The popularity of organic farming has increased the use of non-chemical weed management ᴍᴇᴛʜods like flame weeding. Now that organic production has resumed and men are seeking strategies to control weeds and organic goods, we are seeing a lot more of this. There is no one-size-fits-all approach to weed control, even with flame weeding. We must go back and execute more mechanical cultivation because the flame process is still going on. However, this significantly reduces the number of field passes.
Let’s see How Flame-Throwing Tractors Get Rid Of Weeds in the video below:
Source: Jamie Gilchrist
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