Abstract
The effect of established populations of two sympatric annual weeds,Galinsoga ciliata (Raf) Blake andG. parviflora Cav on their newly emerged seedling cohorts was studied. These weeds occur abundantly in croplands and early successional communities in the northeastern hill region of India. Seed germination, survivorship and growth in both cases were reduced owing to competition from their established plants. The established cohorts ofG. ciliata exercised greater suppressive effect than those of G. parviflora. Twenty five-day old cohort ofG. ciliata caused maximum suppression on foliage production, seed output and dry matter yield of the newly emerged individuals ofG. parviflora.
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Rai, J.P.N., Tripathi, R.S. Effect of established populations of two annual weeds on their newly emerged seedling cohorts. Proc. Indian Acad. Sci. 95, 79–86 (1985). https://doi.org/10.1007/BF03053122
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DOI: https://doi.org/10.1007/BF03053122