What are your thoughts on these pictures Weed Control Diego Martin North Secondary School.

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What are your thoughts on these pictures Weed Control.
Presentation transcript:

What are your thoughts on these pictures

Weed Control Diego Martin North Secondary School

A weed is considered an unwanted or undesirable plant that is growing in the wrong place

Advantages of weeds Some weeds can be used for medicinal purposes Some weeds are used for landscaping Weeds are used to prevent soil erosion Some weeds are used for as ornamentals and flowers

Weeding

Disadvantages of weeds  Compete with the plant for sunlight, water and nutrients  Encourages pest which attacks crops  Encourages diseases organisms to infest plants  Compete with the crop for space to grow Methods of weed control  Manual- hand pulling, hoe  Chemical- weedicides (Gramozone, Round up)  Mechanical - “waka”,

Manual methods of weed control

Mechanical Control This involves using machinery to kill and control weeds

Chemical Control This involves using Chemicals to kill and control weeds

Question Answer the following questions :  What is a weed  Disadvantages of weeds  Weeds can also be of importance. State why?  Briefly state which is the safest method of controlling weeds, and give reasons why?  List the different methods of weed control