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Weed Control

A weed is any plant that grows in the wrong place and competes with surrounding crops for water, nutrients, sunlight and space. To control any type of weed, you must identify the weed correctly, select the most effective management method, and monitor the after-effects.


Even though there are a number of sure-fire methods of controlling weeds in various crops, they can be classified into 5 main as outlined below:

  1. Preventive Weed Control

This refers to any method that can be used to prevent the infestation of weed in a cultivated farm, a pasture, or a greenhouse. Preventive weed control methods usually come in handy when rapid response is required after an early detection of intrusive weeds. Examples include cleaning farm equipment after use, and using certified weed free seed.

  1. Cultural Weed Control

This refers to any non-chemical crop management method including ploughing, planting, irrigation, fertilizer application, crop rotation, mowing, slashing, mulching etc., that helps in limiting the growth of weeds. Cultural control also involves the growing of desired vegetation to restrict the growth of invasive types of weed.

  1. Mechanical Weed Control

This refers to the use of farm tools and equipment including but not limited to hoes, rakes, ploughs, spades, machetes, etc. to control weeds. This method requires farmers to identify the right tools or equipment to use based on the life cycle stage of target weeds. This ensures that you don’t damage your crops’ trunks or dig out shallow feeder roots that may lead to infections.

  1. Biological Weed Control

This refers to the use of natural or living agents to reduce the spread of weeds to acceptable levels. Examples of living agents include bacteria, fungi, insects and plant parasites. Even though infect biocontrol is the most common method, farmers also use grazing animals, such as cattle, goats, sheep, or horses to control weeds.

  1. Chemical Weed Control

This method involves the application of herbicides to control the germination or spread of various species of weeds. To manage different types of weeds, applying herbicides is the most effective method because it is easy to apply and does not cause any mechanical damage to crops. Ensure that you read the product requirements on the label before applying herbicides to your crops.


Before you decide to use a specific method of controlling weed, you must analyse various factors, such as the infestation size, plant life cycles, and environmental considerations.

For more expert tips on how to control weeds, maximize your yield, boost your profits, and improve efficiency while practicing sustainable agriculture, contact Kumea Agriculture.

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