Methods of weed control
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This document discusses various methods of weed control including preventive, mechanical, cultural, chemical, and biological methods. Preventive methods aim to prevent weed growth through practices like using farm yard manure, uprooting weeds before flowering, and using clean seeds. Mechanical methods use physical labor and tools like hand pulling, hoeing, and flooding. Cultural methods manipulate farming techniques such as timing, density, and irrigation. Biological control uses bioagents like insects and pathogens that target specific weed species.
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Methods of weed control
- 1. Gaurav Arora Baba Farid college, Bathinda 95011-15309 METHODS OF WEED CONTROL
- 2. METHODS OF WEED CONTROL • Preventive methods • Mechanical methods • Cultural methods • Chemical methods • Biological methods
- 3. Preventive methods Use of FYM Uprooting weeds before flowering Use of clean farm machinery Keep clean irrigation channels Nursery sampling Use of clean seeds
- 4. Mechanical methods Hand pulling Hand hoeing Interculture Flooding Flaming & steaming Mowing Tillage
- 5. Cultural methods Date of sowing Plant density Planting pattern/ crop architecture Soil solarization Selection of quick growing varieties Tillage Dab system Mulching Irrigation management Method of fertilizer application Crop rotation
- 6. Biological methods Quality of bioagent Host specific Field environment Easy to multiply Feeding habbits Kind of bioagent Insects Plant pathogens Carp-fish Competitive plants
- 7. EXEMPLES OF BIOLOGICAL CONTROL OF WEEDS ARE AS FOLLOWS • Lantana camara- by Plusia verticillata • Opuntia inermis- by cactoblastic cactorum • Cyperus rotundus- by bactra verutana • Parthenium hysterophorus- by zygogramma bicolorata