PJB-2023-416
Evaluation of herbicides for weed control, phytotoxicity, and yield in dark jute (Corchorus olitorius L.) under subtropical conditions
Mohammad Shahadat Hossain, Uttam Kumer Sarker, Sirajam Monira, Md. Harun Rashid, Ahmed Khairul Hasan, Md. Parvez Anwar, Mahfuza Begum, Abeer Hashem, Ulkar Ibrahimova, Ajay Kumar, Elsayed Fathi Abd_Allah and Md. Romij Uddin
Abstract
Substantial infestation of weed is a key constraint in jute. Chemical weed management may confirm actual long- term weed kill and ensure optimum production although it has some residual impact in soil, natural community composition and environment. In this respect, a field experiment was carried out at the Jute Agriculture Experimental Station, Manikganj (latitudes:23°38' and 24°03' north, and longitudes: 89°41' and 90°08' east) during jute growing season (April-July) of 2021 and 2022 in Bangladesh to monitor suitable and effective herbicides for weed control in C. olitorius - jute. The study was designed with 18 treatments and tested in a randomized block design with 3 replications. The weed control approaches consisted of several doses of chemical herbicide, conventional practice and control. Results of the study revealed that twelve weed species represented the weed community under five families in C. olitorius field. Cyperus rotundus, Echinochloa colonum, Digitaria sanguinalis, Eleosine indica were more abundant among the weed species. Principal component analysis of dry matter exposed that Fluazifop-p-butyl 10% + Ethoxysulfuron 10%, Quizalofop-p-ethyl 5%+Ethoxysulfuron 15%, Fenoxaprop-p-ethyl 10%+Ethoxysulfuron 10% were effective against weeds of Cyperaceae and Poaceae family. Fenoxaprop-p-ethyl 10% + Ethoxysulfuron 10% (Sunjute Plus 20 WG) @ 300 g ha-1 sprayed 8 days after sowing (DAS) performed the best in fibre yield (2.50 t ha-1), and stick yield (4.99 t ha-1) apart from weed free treatment. Correlation matrix demonstrated that plant height had a constructive and strong correlation with fibre yield and stick yield. Economics revealed that, the maximum gross return (149767 Tk. ha-1) and benefit-cost ratio (BCR) (1.64) was observed with Fenoxaprop-p-ethyl 10% + Ethoxysulfuron 10% (Sunjute Plus 20 WG) @ 300 g ha-1 sprayed 8 DAS. After evaluation of efficiency of herbicides, it allowed the development of real plant protection approaches and the improvement of yield in jute. The constraint of this study was only done in one location but multi-location trials can be conducted before recommending the package to the farmers
To Cite this article:
Hossain, M.S., U.K. Sarker, S. Monira, M.H. Rashid, A.K. Hasan, M.P. Anwar, M. Begum, A. Hashem, U. Ibrahimova, A. Kumar, E.F. Abd_Allah and M.R. Uddin. 2024. Evaluation of herbicides for weed control, phytotoxicity, and yield in dark jute (Corchorus olitorius L.) under subtropical conditions. Pak. J. Bot., 56(4): DOI: http://dx.doi.org/10.30848/PJB2024-4(43)
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