The University of Queensland

Rice weed management in Southeast Asia

Kumar, Virender, Opena, Jhoana, Valencia, Katherine, Thi, Ho Le, Nguyen, Hong Son, Donayre, Dindo King, Janiya, Joel and Johnson, David E. (2017). Rice weed management in Southeast Asia. Weed Management in Rice in the Asian Pacific Region. (pp. 282-307) Hyderabad, India: Asian-Pacific Weed Science Society.

Potential of winter pasture legume in rice rotations to mitigate barnyard grass (Echinocloa crus-galli) impacts in temperate Australia

Opena, Jhoana, Pratley, James, Lemerle, Deirdre, Wu, Hanwen and McCormick, Jeffrey (2021). Potential of winter pasture legume in rice rotations to mitigate barnyard grass (Echinocloa crus-galli) impacts in temperate Australia. Agricultural Science, 79-91.

Seed Germination Ecology of Doveweed (Murdannia nudiflora) and Its Implication for Management in Dry-Seeded Rice

Ahmed, Sharif, Opena, Jhoana L and Chauhan, Bhagirath S (2015). Seed Germination Ecology of Doveweed (Murdannia nudiflora) and Its Implication for Management in Dry-Seeded Rice. Weed Science, 63 (2), 491-501. doi: 10.1614/WS-D-14-00115.1

Response of 10 elite “green super rice” genotypes to weed infestation in aerobic rice systems

Chauhan, Bhagirath Singh, Opena, Jhoana and Ali, Jauhar (2015). Response of 10 elite “green super rice” genotypes to weed infestation in aerobic rice systems. Plant Production Science, 18 (2), 228-233. doi: 10.1626/pps.18.228

Weed population dynamics, herbicide efficacies, and crop performance in a sprinkler-irrigated maize-rice cropping system

Opena, Jhoana L., Quilty, James R., Correa, Teodoro Q. and Chauhan, Bhagirath S. (2014). Weed population dynamics, herbicide efficacies, and crop performance in a sprinkler-irrigated maize-rice cropping system. Field Crops Research, 167, 119-130. doi: 10.1016/j.fcr.2014.07.014

Seed germination ecology of echinochloa glabrescens and its implication for management in rice (Oryza sativa L.)

Opena, Jhoana L, Chauhan, Bhagirath S. and Baltazar, Aurora M. (2014). Seed germination ecology of echinochloa glabrescens and its implication for management in rice (Oryza sativa L.). PLoS ONE, 9 (3) e92261, e92261.1-e92261.9. doi: 10.1371/journal.pone.0092261

Weed management and grain yield of rice sown at low seeding rates in mechanized dry-seeded systems

Chauhan, B. S. and Opena, J. (2013). Weed management and grain yield of rice sown at low seeding rates in mechanized dry-seeded systems. Field Crops Research, 141, 9-15. doi: 10.1016/j.fcr.2012.11.002

Effect of plant geometry on growth and yield of corn in the rice-corn cropping system

Chauhan, Bhagirath S. and Opeña, Jhoana L. (2013). Effect of plant geometry on growth and yield of corn in the rice-corn cropping system. American Journal of Plant Sciences, 04 (10), 1928-1931. doi: 10.4236/ajps.2013.410237

Effect of plant spacing on growth and grain yield of soybean

Chauhan, Bhagirath S. and Opeña, Jhoana L. (2013). Effect of plant spacing on growth and grain yield of soybean. American Journal of Plant Sciences, 04 (10), 2011-2014. doi: 10.4236/ajps.2013.410251

Implications of plant geometry and weed control options in designing a low-seeding seed-drill for dry-seeded rice systems

Chauhan, B. S. and Opena, J. (2013). Implications of plant geometry and weed control options in designing a low-seeding seed-drill for dry-seeded rice systems. Field Crops Research, 144, 225-231. doi: 10.1016/j.fcr.2012.12.014

Management of volunteer corn seedlings in dry-seeded rice

Chauhan, Bhagirath S. and Opeña, Jhoana L. (2013). Management of volunteer corn seedlings in dry-seeded rice. American Journal of Plant Sciences, 04 (12), 2381-2385. doi: 10.4236/ajps.2013.412294

Effect of tillage systems and herbicides on weed emergence, weed growth, and grain yield in dry-seeded rice systems

Chauhan, B. S. and Opena, J. (2012). Effect of tillage systems and herbicides on weed emergence, weed growth, and grain yield in dry-seeded rice systems. Field Crops Research, 137, 56-69. doi: 10.1016/j.fcr.2012.08.016

Growth of purple nutsedge (cyperus rotundus) in response to interference with direct-seeded rice

Chauhan, Bhagirath S. and Opea, Jhoana (2012). Growth of purple nutsedge (cyperus rotundus) in response to interference with direct-seeded rice. Weed Technology, 26 (3), 506-509. doi: 10.1614/WT-D-12-00007.1

Herbicides in lowland rice farming: What's driving the farmer's choice in Lao PDR?

Bouahom, Bounthanom, Palaniappan, Gomathy, Opena, Jhoana and Mitchell, Jaquie (2023). Herbicides in lowland rice farming: What's driving the farmer's choice in Lao PDR?. 28th Asian Pacific Weed Science Society Conference (APWSS 2023), Phuket, Thailand, 26-29 November 2023. Weed Science Solutions for Global Food Security:

Designing best weed management practices for mechanized rainfed and irrigated direct seeded rice systems in Cambodia and Lao PDR

Opena, Jhoana and Mitchell, Jaquie (2023). Designing best weed management practices for mechanized rainfed and irrigated direct seeded rice systems in Cambodia and Lao PDR. International Rice Congress 2023, Manila, Philippines, 16 - 19 October 2023. Zenodo. doi: 10.5281/zenodo.10398266

Empowering rice farmers in Laos through gender-inclusive integrated weed management training

Bounthanom, Bouahom, Gomathy, Palaniappan, Jhoana, Opena and Jaquie, Mitchell (2023). Empowering rice farmers in Laos through gender-inclusive integrated weed management training. International Rice Congress 2023, Manila, Philippines, 16-19 October 2023. doi: 10.5281/zenodo.10398315

Promoting gender equality amongst rice farmers: Insights from ACIAR funded projects in Laos, Cambodia, and Vietnam

Palaniappan, Gomathy, Chea, Sareth, Lim, Sophornthida, Bouahom, Bounthanom, Nguyen, Minh Anh, Nguyen, Binh Thanh, Nguyen, Tin Hong, Opena, Jhoana and Mitchell, Jaquie (2023). Promoting gender equality amongst rice farmers: Insights from ACIAR funded projects in Laos, Cambodia, and Vietnam. International Rice Congress 2023, Manila, Philippines, 16-19 October 2023. Zenodo. doi: 10.5281/zenodo.10398686

Unlocking women's potential for effective weed management in rainfed lowlands: A Cambodian perspective

Lim, Sophornthida, Chea, Sareth, Palaniappan, Gomathy, Opena, Jhoana and Mitchell, Jaquie (2023). Unlocking women's potential for effective weed management in rainfed lowlands: A Cambodian perspective. International Rice Congress 2023, Manila, Philippines, 16-19 October 2023. Zenodo. doi: 10.5281/zenodo.10398235

Pasture legumes offer promise to control barnyard grass in delayed permanent water systems in rice

Opena, Jhoana, Pratley, James, McCormick, Jeffrey, Wu, Hanwen and Lemerle, Deirdre (2019). Pasture legumes offer promise to control barnyard grass in delayed permanent water systems in rice. 2019 Agronomy Australia Conference, Wagga Wagga, NSW, Australia, 25 – 29 August 2019.

Allelopathic potential of pasture legume species and selected winter crops on barnyard grass and rice

Opena, Jhoana, Wu, Hanwen, Moroni, Sergio, Lemerle, Deirdre and Pratley, James (2018). Allelopathic potential of pasture legume species and selected winter crops on barnyard grass and rice. 21st Australasian Weeds Conference, Manly, Australia, 2-12 September 2018. The Weed Society of New South Wales Inc..

Persistence of oxadiazon residues in soil and grains in an upland rice (Oryza sativa) field

Bunquin, Michelle Anne, Onoya, Jerone, Chauhan, Bhagirath, Opena, Jhoana and Beebout, Sarah (2015). Persistence of oxadiazon residues in soil and grains in an upland rice (Oryza sativa) field. Unknown, Unknown, Unknown. Washington, DC United States: American Chemical Society.

Impacts of pasture legume phase on the seed bank, establishment and growth of barnyard grass (Echinochloa crus-galli) in drill sown rice

Opena, Jhoana (2021). Impacts of pasture legume phase on the seed bank, establishment and growth of barnyard grass (Echinochloa crus-galli) in drill sown rice. PhD Thesis, School of Agricutural, Environmental and Veterinary Sciences, Charles Sturt University.