An exhaustive weed survey of all the states has been completed. A national weed data base is being prepared.

Based on the multi-disciplinary and multi-location trials conducted in different agro- climatic zones, herbicide recommendations for various crops and cropping systems have been done.

 The Mexican beetle, Zygogramma bicolorata - an ecofriendly bio-control agent for controlling Parthenium is being popularized throughout the country. The beetles are supplied free of cost to interested people.

 Exotic weevil, Neochetina spp. has been found to be effective in controlling the obnoxious aquatic weed, water hyacinth (Eichhornia crassipes).

 Planting of marigold and Cassia serecia remarkably inhibited the emergence and growth of Parthenium.  

Continuous use of butachlor in rice and isoproturon in wheat under rice-wheat system reduced the densities of Echinochloa colona in rice and Phalaris minor, Cichorium intybus, and Chenopodium album in wheat but the problem of Commelina communis, Cyperus iria in rice and Chenopodium ficifolium in wheat increased.  

 Summer ploughing followed by glyphosate application at 4-6 leaf stage in the month of April successfully controlled infestation of Saccharum spontaneum (Kans) during kharif season.

 Soil solarization during April-May proved to be a suitable non- chemical weed control measure for effective control of several annual weeds.

Intercropping of cowpea in maize and direct - seeded rice has been found to suppress weed growth effectively.

 In rice – wheat system zero-tillage in wheat reduces the population of Phalaris minor whereas wild oat population increases.

Pre–emergence application of pendimethalin 1.0 kg/ha provided satisfactory control of dodder (Cuscuta spp.) in lentil, linseed and  chickpea.

A power-driven aquatic weeder has been designed and developed for the management of aquatic weeds.

A wick applicator has been developed for application of non-selective herbicides in standing crops.

Monitoring of herbicide residues at national level has indicated that the herbicides applied as per recommendations did not contaminate soil, water or food.