A weed survey provides valuable insights into the prevalence of various
weed species, the interplay between weeds and crops, and the dynamic patterns of these
associations in field conditions. A roving survey is implemented within a vast
geographical region that includes either a single district or multiple districts. A weed
survey with identical objectives to the roving survey can be conducted on a farm.
Periodic evaluation of the weed control treatments is necessary to assess their impact
on both the crop and weed populations. Visual estimation is a technique employed to
quickly gather data when dealing with a substantial number of plots and plant species
while facing resource constraints. The European Weed Research Council (EWRC) has
developed a rating system to assess the efficacy of weed control. Weed assessments
should be conducted during the initial stages of crop growth when weed competition is
at its peak and weeds are in their early and manageable stages for counting. The
collection and preservation of weed specimens are essential for future reference and
study, as not all weed species are readily accessible at all times and locations. An
herbarium is a collection of dried, pressed, and preserved plants, including weeds,
organized according to an accepted classification system such as Bentham & Hooker or
Hutchinson. In addition to this, accurate identification of weed plants is a fundamental
requirement for the development of efficient management strategies.
Keywords: Identification, Management, Survey, Weed collection
