TeleSupport India Repository

Solution Biological weed control
Country India
Last update: 19/10/2006
Summary Biological control is practice of destruction or suppression of weeds by living organisms called natural enemies, which are encouraged or disseminated by men. In nature, often the growth of many weeds remains limited due to biotic stresses eg. pest and disease organisms. When a weed disperses to a new place, it spreads rapidly because there it has no enemies. It becomes a noxious one. The biological weed control aims at maintaining the balance between the target weed and its natural enemies in ecosystem by purposeful introduction of bio-agents. Bio-agent grows and destroys the target weed.
Contributed by person details Mrs. Shivani Yadav (CASA, TeleSupport India, SIKSA)
Challenge/Issue Chemical weed control is more efficient method of weed control but continuous application of chemicals for control of new emerging weeds has created the problem of environmental pollution and health hazard. Besides, after sometimes, weeds become resistant to that chemical and mechanical weeding is not possible due to more labour cost.

Method Bio-agent for the control of particular weed is introduced. Bio-agent grows and destroys the target weed.
Lessons learned Bio-agent should be host specific i.e. it should not attack other plants particularly economically useful plants.
Bio-agent should be able to withstand with the new environment, where it is to be transported.
Bio-agent should be free of its parasites and predators.
Bio-agent should have successful killing action.
Bio-agent should have high mobility, so that it can cover a large area in less time.
Bio-agent should be fast reproducer than weed species, so that it can smother the weed species.
Bio-control of weeds is a very slow process and complete control is not possible.
Bio-agents may kill other useful plants also.
List Keywords
1.1 Socio- economic Sector (OECD) 311 Agriculture
1.4 Target group(s) 4. Research community
5. Decision makers/Policymakers
2.1 Production System Irrigated system
1. Mono-culture
2. Mixed cropping system
2.2 Production Chain 3. Pest & Disease Control
2.4 Food Crops Pigeon Pea (Cajanus)
Rice (Oryza)
Sorghum (Sorghum)
Maize (Zea)
Oat (Avena)
Chickpea (Cicer)
Pearl Millet (Pennisetum)
Wheat (Triticum et al.)
Barley (Hordeum)
Pea (Pisum)
Cowpea et al. (Vigna)
Telesupport Themes IPM
Stage Country Region Location
Test India Haryana
Role Person name
Describer person details Dr. Rajender Singh Chhonkar
Describer person details Dr. Dharam Bir Yadav
Role Organisation Acronym
Publisher organisation details Centre For Advancement of Sustainable Agriculture CASA
Network Organisation organisation details TeleSupport India Network TeleSupport India
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