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Weed control efficacy of herbicides in unpuddled transplanted aman (summer) rice

Zahan, T., Rahman, M.M., Hashem, A., Begum, M., Bell, R.W. and Haque, M.E. (2014) Weed control efficacy of herbicides in unpuddled transplanted aman (summer) rice. In: Proceedings of the conference on conservation agriculture for smallholders in Asia and Africa, 7 - 11 December, Mymensingh, Bangladesh pp. 110-111.

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Rice is generally grown by seedling transplanting on puddle land to facilitate easy crop establishment and weed control. Very recently, seedling transplanting is done in unpuddled land just after strip tillage (a form of conservation tillage that clears crop residues in a narrow zone of soil and loosen subsoil layers prior to planting, Mitchell et al., 2009) followed by irrigation. The unpuddled transplanted rice gives yield similar to that of puddle transplanted rice (Haque, 2009; Saharawat et al., 2009). The weed pressure during crop establishment is low in the puddle transplanted system, but weed is the major barrier in strip till unpuddled transplanted rice. The manual or mechanical weeding is no longer feasible because of scarcity of labourers and increased labour costs. This labour situation has forced the farmers to rely on herbicides as the best option for weed control. The continuous use of the same herbicide aids the development of herbicide resistance in weeds which make weed control difficult. Herbicide resistance can be managed by rotation of herbicides with alternate modes of action. Therefore, it is essential to study the efficacy of a number of herbicides with different modes of action for controlling weeds in unpuddled transplanted rice. The present study was aimed to evaluate the weed control efficacy of herbicides with different modes of action for sustainable weed management for unpuddled transplanted rice under the strip tillage system.

Publication Type: Conference Paper
Murdoch Affiliation: School of Veterinary and Life Sciences
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