Sunday, November 14, 2021

Weed management – eradication method

Weeds are recognized worldwide as an important type of undesirable economic pest. Traditionally, weeds are any plants, regardless of their biology, that interfere with the utilization of land and water resources and thus, adversely affect human welfare.

There are three weed management strategies:
*Preventive Measures
*Eradication Methods
*Management/Control Methods

Weed eradication is the complete removal of all live plant parts and seeds from an area, which may be a field/farm/village/geographical region, depending upon the need. Although very attractive, it is a very expensive adventure sine it will often cost more than the land was worth.

Eradication should start when the weeds are small and limited in growth and spread. Eradication has considerable benefits because of its potential to provide substantial and long-term ecological and economic benefits when an invading organism is eliminated.

However, the complete eradication of actual (emerged plants) and potential (seed-bank) weeds is unachievable. Despite their potential to negatively affect farming objectives, it seems paradoxical that weeds may also be considered valuable. Indeed, weeds interact not only with cultivated plants, but also show numerous interactions with other organisms, since many weeds harbor predators of crop pests, or secrete in soil nematicides, while all of them hold soil nutrients against their leaching losses during fallow periods.

Heavy expense of weed eradication is justified against noxious weeds such as Striga, Cuscuta, and Lantana spp., to prevent their dispersal to additional millions of hectares of useful land and water bodies.

Plants are not well represented on the list of eradication successes and can be difficult targets owing to problems with detection and persistent seed banks. Generally, the success rate of weed eradication programs is low at around 10-20%.
Weed management – eradication method

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