Weed Growth and Grain Yield, as Affected by Herbicides, in Dry-seeded Rice in Sri Lanka

Autor:	Sakinda D. Kulatunga, Bhagirath S. Chauhan, Indika U. Madusanka, Anuruddika S. K. Abeysekara
Rok vydání:	2013
Předmět:	Oryza sativa Field experiment food and beverages Soil Science Plant Science Biology Weed control MCPA chemistry.chemical_compound Pendimethalin Agronomy chemistry parasitic diseases Propanil Genetics Sri lanka Weed Agronomy and Crop Science
Zdroj:	Journal of Crop Improvement. 27:419-429
ISSN:	1542-7536 1542-7528
DOI:	10.1080/15427528.2013.789810
Popis:	Dry-seeded rice (Oryza sativa L.) is an emerging establishment system in irrigated areas in many Asian countries, including Sri Lanka. A field experiment was conducted in the major (Maha) 2011/12 and minor (Yala) 2012 seasons at the research farm of the Rice Research and Development Institute, Sri Lanka, to evaluate the efficacy of several herbicides in an irrigated dry-seeded rice system. Herbicide treatments included propanil, followed by MCPA (2-methyl-4-chlorophenoxyacetic acid), pendimethalin, oxadiazon plus propanil, oxyfluorfen, and pendimethalin, followed by fenoxaprop plus ethoxysulfuron, oxadiazon plus propanil, followed by fenoxaprop plus ethoxysulfuron, and oxyfluorfen followed by fenoxaprop plus ethoxysulfuron. The efficacy of herbicides varied across years. All herbicide-treated plots had lower weed density and weed biomass than the untreated plots. The results suggested that oxyfluorfen applied alone provided the poorest weed control. Generally, there was no effect of the additional spray o...
Databáze:	OpenAIRE
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