International Journal of Chemical Studies
Vol. 6, Issue 6 (2018)
Weed management studies in Roselle (Hibiscus sabdariffa L.)
Author(s): P Amara Jyothi, J Jagannadham, N Hari Satyanarayana, Y Rajasheker and B Swati
Abstract: An experiment was conducted at Agricultural Research Station, Amadalavalasa, Andhra Pradesh during Kharif 2016 and 2017 for studying the effect of different weed control treatments to manage the weeds of roselle. The results revealed that all weed control treatments significantly increased the plant height, basal diameter and fibre yield compared to unweeded check. Highest fibre yield was recorded with Pretilachlore 50% EC @ 900 ml /ha with sowing controlled all types of weeds and one more hand weeding is needed after the emergence of weeds and it was at par with two hand weedings and significantly superior over all the other treatments. First nail weeding at 5-6 DAE and second at 10DAE + one hand weeding was also as effective as two hand weedings in respect of fibre yield and controlling the weeds of Mesta. All the weed control treatments significantly reduced the weed biomass compared to Unweeded check at all crop growth stages. The higher weed control efficiency with lower weed index was noticed with Pretilachlore 50% EC @ 900 ml/ha + one hand weeding followed by two hand weedings treatment. Among the weed control treatments highest benefit cost ratio was recorded with Pretilachlore 50% EC @ 900 ml/ ha + one hand weeding followed by two hand weedings. From the study, it was revealed that Pretilachlore as pre emergence herbicide was more effective in controlling the weeds of roselle with highest economic returns.
Pages: 45-47 | 627 Views 34 Downloads
How to cite this article:
P Amara Jyothi, J Jagannadham, N Hari Satyanarayana, Y Rajasheker, B Swati. Weed management studies in Roselle (Hibiscus sabdariffa L.). Int J Chem Stud 2018;6(6):45-47.