Principles of weed management.pptx

Principles of weed management,
Assignment on principle of weed management ,
As different principles of weed management includes prevention,eradication and control.
This slides provides precise information on principle of weed management with merits and demerits of each of the principle ,
And doable things on weed management on each principle

1. Tribhuvan University Institute of Agriculture & Animal Sciences Rampur Campus, Chitwan PRESENTATION ON DIFFERENT PRINCIPLES OF WEED MANAGEMENT Submitted by: Aashish Gyawali Roll no: 02 5 th Semester IAAS, Rampur Campus Submitted to: Mr. Achyut Gaire Assistant Professor Department of Agronomy IAAS, Rampur Campus Subject: AGR 311

2. INTRODUCTION Weed: The definition of weed is predicted on human perception, desire and needs. A weed is a plant which interferes with human activity or welfare. It can also be defined as a plant growing in a place where it is not desired at a particular point in time.

3. PREVENTION It encompasses all measures taken to prevent the introduction, establishment and spread of the weed. Important weed prevention Practices are : Use clean crop seeds/weed free crop seed. Use well decomposed organic manure. Avoid adding weeds to manures pits. Avoid use of sand and soil from weed infested area. Keeping Irrigation channel clean. Quarantine regulations.

4. Cost Efficient. Environmental Benefits i.e. minimizes the use of chemical herbicides. Preserving Beneficial organism. Long Term solution; It addresses the root cause of weed growth. Less Labour-Intensive; Reduce the need for constant manual weeding. Initial Effort ; more effort to prevent. Limited Effectiveness; might not completely eliminate all weed growth. Time-Consuming. Delayed Results; It takes time for the ecosystem to respond Continuous Management; It requires constant maintenance and monitoring.

5. ERADICATION Complete elimination or removal of all live weeds/wild plants/plants including their seeds and vegetative propagules from certain area. Eradication of newly introduced weed is the best way to prevent establishment. Eradication can be achieved by various methods, including manual removal, mechanical methods like Mulching, Using Herbicides & promoting plant growth to out compete them Justified only for the elimination of serious weeds in a limited area( perennial weed such as Cyperus rotundus , Cynodon dactylon )

6. Effective Control. Reduced Competition for nutrients, water, sunlight etc. Preventing Seed Production; Eradication prevents weed from producing seeds, Reducing future growth and seed bank build up. Labor Intensive. Environmental Effects; Herbicide can harm non-target plants and animals. Resilience & Regrowth: New weeds can quickly colonize the area after the eradication. Soil disturbance: Can disturb soil structure leading to soil erosion.

7. CONTROL Process of limiting weed infestations and minimizing Competition. In control methods, the weeds are seldom killed but their growth is severely restricted. Control methods reduces the weed population in an area to a level where you can utilize the land at its full potential. Control is easier practices than other principles. Used only after the problem exists that cause the economic loss.

8. Sustainable Approach; aims to keep weed population in check rather than eradication. Cost-Effectiveness. Reduced Environmental Impact; Less impact on non target species. Less soil disturbance; control methods like mulching and crop covering can help maintain soil structure and prevent erosion. Competition; Weeds might still compete with desired plants where control methods are not highly effective Adaptation. Seed Production; some control methods might not control weed seed production. Balancing Act; Finding the right balance between controlling weeds and preserving desired plants can be challenging.