This archive report was first published on 16 May 2020.
Heavy rains in recent months have led to a surge in weed growth on farms, posing a significant threat to crops. To combat this issue, farmers are being forced to increase the frequency of weed elimination, with many turning to herbicides as a cost-effective solution.
However, the ineffectiveness of herbicides can result in significant losses for farmers, who must incur extra costs to rectify the situation. Weeds compete with crops for nutrients, light, and space, leading to reduced yields.
So, how can farmers use herbicides effectively? The first step is to read the label instructions carefully and understand what needs to be done. It is also essential to check the herbicide's registration number with the Pest Control Products Board of Kenya to ensure it is a genuine product.
Before applying the herbicide, farmers must identify the type of weeds and select the proper herbicide for the application site. The label should list the weeds being controlled, and farmers must consider the stage of growth of the weeds. Pre-emergence herbicides control germinating seeds before they emerge from the soil, while post-emergence herbicides control plants that have already emerged.
When clearing land, farmers should use a non-selective herbicide to kill all weeds. However, when using selective herbicides, they must avoid spraying directly onto the crop, as this can suppress its growth or scorch the plant. It is also essential to use the recommended dosage and avoid spraying in windy conditions or during rainy days.
Moist soils promote rapid plant growth, which can result in herbicide injury, while high temperatures can lead to the degradation of the chemical, reducing its efficiency. Therefore, farmers should apply herbicides during cool weather conditions and ensure good crop coverage.
Finally, farmers must protect themselves while spraying herbicides by wearing personal protective equipment, including gloves, gumboots, respirators, goggles, and an overall. In case of spills or skin contact, they should rinse the affected area with clean running water and dispose of the empty bottles properly.
