Vol. 11, Special Issue 8 (2022)

Author(s):
R Naseeruddin

Abstract:
It has become increasingly challenging for agricultural researchers to feed the world's growing population due to the rapidly changing climatic conditions. The environmental factors viz., enhanced carbon dioxide concentration, rising temperature and shifting of rainfall pattern can alter the growth and physiology of weedy plants. These singularities also affect regional and local climates, resulting in significant influences on the agricultural systems of a particular region. In comparison to C₄ plants, higher CO₂ levels may give C₃ plants comparative benefits through greater photosynthesis, biomass production, and yield. On the other hand, plants with C₄ photosynthetic pathways are projected to gain more from an increase in global temperatures than C₃ plants, which resulted in weed species shift in a particular agroecosystem. These changes could modify weed management options to manage or control invasive and more tolerant weed species. The efficacy of herbicides and any other single weed control measures will not address the current situation, the focus should be on sustainable weed management in both natural- and agro-ecosystems to manage such invasive and troublesome weeds. This review has presented a holistic idea to the current research and has shown key deficiencies which need further attention to combat global climate change.