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- Address : Bathalagoda, Ibbagamuwa, Sri Lanka
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- Telephone : +94 372 258561
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RICE-the staple food-weed management
Weeds - Plants Out of Place
Weeds could be define as "any plant species that interfere with the cultivation of a crop".
Cause major direct/indirect economic losses in rice cultivation
- increased production costs.
- reduced yield and/or quality of the crop.
Therefore, considered to be major pests in rice cultivation.
Recognition of weeds should be done carefully
- all plant species might not be weeds.
- some species may impose detrimental impacts, while some may provide a positive impact on crops.
- assist nitrogen fixation.
- control of other weeds.
- adding organic content to soil etc.
Weeds compete with rice for resources, but usually are not lethal to the crop.
Weeds are classified based on
- taxonomy
- length of life cycle
- morphology
Cause major direct/indirect economic losses in rice cultivation
- increased production costs.
- reduced yield and/or quality of the crop.
Therefore, considered to be major pests in rice cultivation.
Recognition of weeds should be done carefully
- all plant species might not be weeds.
- some species may impose detrimental impacts, while some may provide a positive impact on crops.
- assist nitrogen fixation.
- control of other weeds.
- adding organic content to soil etc.
Weeds compete with rice for resources, but usually are not lethal to the crop.
Weeds are classified based on
- taxonomy
- length of life cycle
- morphology
![](https://doa.gov.lk/wp-content/uploads/2021/07/damages-of-weeds3.png)
![](https://doa.gov.lk/wp-content/uploads/2021/07/unnamed.jpg)
![](https://doa.gov.lk/wp-content/uploads/2021/07/h2217d_fullsize.jpg)
![](https://doa.gov.lk/wp-content/uploads/2021/07/106650-3.jpg)
![](https://doa.gov.lk/wp-content/uploads/2021/07/fea7814d1ae4554593fe9e94c19cd1e2.jpg)
![](https://doa.gov.lk/wp-content/uploads/2021/07/915.jpg)
Why do Weeds Grow Lavishly in Rice Fields?
Weed Classification
Major Rice Weeds in Paddy Fields
Weed Management with IWMP