Standardization of agrotechniques for weed management in aerobic rice (Oryza sativa L.)
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Department of Crop Sciences, University of Rwanda, Musanze, Rwanda
Department of Agronomy, University of Agricultural Sciences of Bangalore, Bangalore, India
A - Research concept and design; B - Collection and/or assembly of data; C - Data analysis and interpretation; D - Writing the article; E - Critical revision of the article; F - Final approval of article
Submission date: 2019-01-02
Acceptance date: 2019-06-25
Online publication date: 2019-07-18
Corresponding author
Sylvestre Habimana   

Department of Crop Sciences, University of Rwanda, Musanze, Rwanda
Journal of Plant Protection Research 2019;59(2):273-280
This weed management investigation was carried out at the Zonal Agricultural Research Station (ZARS), Bangalore, during the summers of 2017 and 2018 to standardize agrotechniques for weed management of rice grown under aerobic conditions. The experiment was laid out in a randomized complete block design with eleven treatments replicated thrice. It consisted of two pre-emergence herbicides and one early post-emergence herbicide, the stale seedbed technique, mulching, hand weeding and intercultivation which was compared to the weedy check. The results showed that pyrazosulfuron ethyl 10% wettable powder (WP) at 35 active ingredient (a.i.) g ⋅ ha–1 as PE fb bispyribac sodium 10% SC at 30 ml ⋅ ha–1 a.i. as an early post-emergence herbicide performed better in terms of rice grain and straw yield (5,800 and 9,786 kg ⋅ ha–1, respectively), plant height (58.42 cm), rice total dry matter production (149.84 g ⋅ plant–1), productive tillers ⋅ hill–1 (40.32), panicle length (24.53 cm), 1000 grain weight (25.35 g), net returns (Rs. 62424), higher B : C ratio (2.59) and lower total weed density, weed dry weight at different stages of rice and weed index (3.80%) as well as higher weed control efficiency (90.52%). This practice could be recommended to farmers growing aerobic rice under these climatic conditions.
Mr. Sylvestre, sincerely acknowledges The Netaji Subhas International Fellowship/Indian Council of Agricultural Sciences (ICAR), New Delhi, Government of India for providing the financial support to pursue the Ph.D. program including this research work.
The authors have declared that no conflict of interests exist.
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