PJB-2020-322
WILD PLANT RHAZYA STRICTA HERBICIDAL EFFECTIVENESS BY SANDWICH METHOD
DR. TAUSEEF ANWAR
Abstract
Heavy doses of synthetic weed control chemicals have facilitated herbicide resistance in weeds. Natural compounds can be screened as environmentally safe herbicides, as these are compounds that are produced by living organisms. Experiments were conducted on selected weeds (viz. Rumex dentatus, Euphorbia helioscopia, Chenopodium album, Avena fatua, Phalaris minor) to study allelopathic potential of poisonous plant 'Rhazya stricta' commonly known as 'Sihar or Hisawarg.' Experiments were performed using a medium of 0.75 per cent (w / v) agar, filter paper and soil. Parameters studied for assessing allelopathic effects were germination inhibition (percent), reduction in radicle duration, and plumule length (cm). Results showed that seed germination (percent) of R. Dentatus, P. minor and C. Album is inhibited by leaves of R. stricta. Minimum germination for C. album was noted whereas there is non significant effect on the germination (%) of E. Helioscopia, T. aestivum and A. Fatua was noted. Leaf extract of R. stricta on the agar, filter paper, and the soil has inhibited the radicle and plumule length (cm) of all test species. Results have indicated that even though radicle length and germination of T. aestivum is not affected by leaf extract of R. stricta, the length of its plumule was substantially decreased by extract. The retarding effect of growth on wheat indicates that R. stricta might not be an acceptable candidate for weed control under field conditions.
To Cite this article:
Download
