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Answer» Weed: Any plant growing out of its proper place or where it is not wanted/ desired is called as a weed or weeds are the plants out of place in cultivated fields, lawns or orchards etc. Harmful effects of weeds: - Weeds reduce the economic yield by competing with main crop for water, nutrition, light, space and air.
- Weeds create difficulty while carrying out cultural practices in the field like hoeing, irrigation and harvesting.
- Several weeds act as alternate hosts to many serious pests/ diseases. They may harvour insects-pests and act as secondary hosts for spread of several diseases.
- Some weeds are injurious to animal and human health.
- For example, Parthenium and Datura seeds are poisonous in nature and may cause allergy to human beings.
Names of weeds: | Common name | Botanical name | Common name | Botanical name | | Wild senji | Melilotus parviflora | Wild palak | Rumex dentatus | | Maina | Medicago denticulaia | Amarbel | Cuscuta sp. | | Bathu | Chenopodium album | Kahi | Saccharum spontaneum | | Chulai | Amaranthus virdis | Bhang | Cannabis sativa | | Bhakhra | Tribulus terristris | Khabbal grass | Cynodon dactylon | | Puthkanda | Achyranthus aspera | Baru grass· | Sorghum halepense | | Dib (Dab) | Typha latijoiia | Motha | Cyperus rotundus | | Bhoorni aonla | Phyllanthus niguri | Parthenium or | Parthenium hyterophorus | | Kana | Saccharum munja | Lantana | Lantana camara | | Dhatoora | Datura stramonium | Jangli gobhi | Launea nudicaulis | | | Jangli gajjar | Daucus carota | | | Khat yay | Portulaca sp. | | | | |
weeds are the unwanted , undesirable plants that grow along with main crop due to growth of weedd:- weeds compete with plants for minerals weeds compete with plant for space for their growth and development
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