Journal of Research in Weed Science
ISC, Google Scholar, CAB Abstracts

Weed density and control efficiency of different weed control methods in transplanted rice in Nepal

Document Type : Short Communication

Authors

Robinson Adhikary 1
Bishnu Bilas Adhikari 2
Bishnu Prasad Kandel 3

1 Ministry of Agriculture and Livestock Development, Nepal

2 Institute of Agriculture and Animal Science, Tribhuvan University, Nepal

3 Department of Plant Breeding, Post Graduate Program, Institute of Agriculture and Animal Science, Tribhuvan University, Kathmandu, Nepal

10.26655/JRWEEDSCI.2020.3.2
Abstract
This study was performed to evaluate the weed density and weed control efficiency (WCE) on transplanted rice under different treatments at a farmer’s field, Bhanu-11, Rupakot, Nepal during Rainy season of 2017. Ten treatments (one manual weeding at 21 days after transplanting (DAT) (T1); two manual weeding at 21 and 42 DAT (T2); three manual weeding at 21, 42, and 63 DAT (T3); single cono weeding at 21 DAT (T4); double cono weeding at 21 &42 DAT (T5); triple cono weeding at 21, 42, and 63 DAT (T6); butachlor as pre emergence (T7); butachlor with single manual weeding at 21 DAT (T8); butachlor with double manual weeding at 21 & 42 DAT (T9) and weedy check (T10) were laid in randomized complete block designs (RCBD) with three replications. At 30 DAT, the highest weed density was recorded at unweeded check (T10) while it was the lowest at butachlor with double manual weeding (T9). At 60 DAT the effective weed control method on weed density was found to be double manual weeding (T2). At 90 DAT triple cono weeding (T6) was found to be more effective on controlling weed density (30) and was at par double manual weeding (T2), double cono weeding (T5) and butachlor with double manual weeding (T9). WCE was the highest in the plot treated with butachlor with double manual weeding at 21 and 42 DAT (T9) and the lowest in the plot treated with butachlor pre emergence (T7) at 30 DAT. At 90 DAT, WCE in the plot treated with triple weeding (T6) was found the highest (78.63%) and the lowest in the plot treated with butachlor as pre emergence (T7) (26.14%).

Keywords

Major weed
Weed recovery percentage
Weed population
Adhikari A, Sapkota A, Regmi P, Neupane S, Sapkota S,  Ghimire S, Ghimire D, Kandel B.P. 2019. Effect of establishment method and different weed management practices on dry direct seeded rice (DDSR) at Rampur, Chitwan. Journal of Research in Weed Science. 2(4):  332-344.
Athaulla P, Sudheer Kamatha  K.V, Hanumanthappa M,   Bhanuprakash H.R,  Sridara S. 2017. Efficacy of Pre and Post Emergent Herbicides in Rice at Coastal Zone of Karnataka, India. Int.J.Curr.Microbiol. App.Sci. Special. 4: 142-146.
DPT. 2006. District Profile of Tanahun District. Statistical Sub Section, Gorkha under Centre Bureau of Statistics (CBS), Government of Nepal.
Gautam D, Kandel B.P, Adhikari B.B, 2018.  Performance of rice genotypes in western mid hill of Nepal.  J. Plant Breed. Genet. 6(3): 111-116.
Kandel G, Adhikari B.B, Adhikari R, Kandel B.P. 2019. Evaluation the growth, productivity and profitability of rice (Sukhadhan-3 variety) under different methods of weed management. Journal of Research in Weed Science. 2(4): 381-392.
Mandal M.K, Duary B, De G.C. 2013. Effect of crop establishment and weed management practices on weed growth and productivity of Basmati rice. Ind J Weed Sci. 45(3): 166-170.
Mani V.S, Chakraborty T.K, Gautam K.C. 1973. Double hedge weed killers in peas. Indian Fmg. 26(2): 80-83.
MOAD. 2017/18.Statistical information on Nepalese agriculture 2017/18 . Government of Nepal, Ministry of Agricultural Development, agribusiness promotion and Statistics Division, singhadurbar, Kathmandu, Nepal.
Mondal D.C, Hossain A, Duary B. 2005. Effect of pyrazosulfuron–ethyl on weeds and yield of transplanted rice under Lateritic Belt of West Bengal. Ind J Weed Sci. 37: 263-264.
Paudel B,  Shrestha  A, Amgain  L.P, Neupane M.P. 2017. Weed Dynamics in Various Cultivars of Rice (Oryza sativa L.) under Direct Seeding and Transplanting Conditions in Lamjung Int. J. Appl. Sci. Biotechnol. 5(2): 159-167.
Ranjit J.D. 2017. Weeds in rice crops and their management practice in Nepal. Rice Sci Technol Nepal. 283-291.
Ranjit J.D, Bhurer K.P, Koirala K.B, Thakur Y, Chaudhary D.N. 1989. Screening of herbicides in upland and transplanted rice. pp. 129-139. In proc. 14th summer crops workshop, Parwanipur, Nepal.
Singh V.P, Singh G, Singh M. 2004. Effect of fenoxaprop-pethyl on transplanted rice and associated weeds. Ind J Weed Sci. 36: 190-192.
Walia U.S. 2006. Weed management. New Delhi: Kalyani publishers.
Journal of Research in Weed Science
Volume 3, Issue 3 - Serial Number 3
Summer 2020
Pages 263-269

Home

A-Z Journals

Indexing and Abstracting

Editorial Board

Guide for Authors

Submit Manuscript

Contact Us

Unrestricted Reuse in Compliance with BOAI

Open Access Policy