Definitioun, Identifikatioun a Charakteristiken vun Onkraut

WEIDER

Onkraut: weeds refer to plants that grow where not needed in our farms. A weed is, for example, a rice plant that grows in an oil palm farm.

IDENTIFICATION OF COMMON FARM & GARDEN WEEDS

CHARACTERISTICS FOR WEEDS

1. Vegetative and sexual methods can be used to spread weeds.
2. Even in adverse weather conditions, weeds can survive.
3. The seeds produced by weeds are large.
4. The weeds are persistent and aggressive in trampling.
5. Some weeds can mature simultaneously with crops and are harvested together with the crop.
6. The viability of most weed seeds is very long.
7. They can live on any type of soil.
8. The modified parts of weeds, like roots, stems, and leaves, help them survive.

WEED DISPERSAL

These agents have different methods of dispersing weeds.

1. Wind: Weed seeds tend to have small, lightweight wings that favor wind dispersal. Aspiliaa Tridax.
2. Water: Weed seeds may fall into moving water (flood), and land on farms can germinate them. Wild cotton, water lily.
3. Both man and animal: Weed seeds can stick to animals’ skin and clothes. These weed seeds can be brushed away as they move around, such as Desmodium & Triumphetta.
4. Explosive mechanism: The pods of dried dehiscent legumes break in sunny weather, scattering seeds, e.g., Centrosema, crotalaria, calapoganium.

EVALUATIOUN:She assesses the lesson by asking the following question:

1. Define weed
2. At least three characteristics of weeds should be outlined.