Effect of different densities of parthenium weed (Parthenium hysterophorus L.) on the performance of direct-seeded rice under aerobic conditions

Ali Ahsan Bajwa, Aman Ullah, Muhammad Farooq, Bhagirath Singh Chauhan, Steve Adkins

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Parthenium weed (Parthenium hysterophorus L.) is an emerging weed species in direct-seeded aerobic systems of rice production. This two-year field study was conducted to evaluate the effect of five different densities (0, 5, 10, 15 and 20 plants m −2 ) of parthenium weed on rice yield and yield-related attributes. Parthenium weed produced ca. 38 to 178% higher biomass at its densities of 10 to 20 plants m −2 as compared to the lowest density of 5 plants m −2 . The paddy yield and yield-related attributes were negatively affected with an increase in the parthenium weed density. In both years, the highest reductions in number of rice panicles (14 to 17%), panicle length (10 to 11%), number of grains per panicle (11 to 18%), 1000-grain weight (8 to 21%) and paddy yield (30 to 35%) were recorded at the highest parthenium weed density (20 plants m −2 ) tested. However, the lower densities of 5 to 15 parthenium weed plants m −2 also caused 11 to 24% and 12 to 26% losses in paddy yield during the years 2016 and 2017, respectively. Therefore, this weed species should be controlled below the density of 5 plants m −2 to avoid the substantial yield losses (over 15%) in direct-seeded rice.

Original languageEnglish
Pages (from-to)796-808
Number of pages13
JournalArchives of Agronomy and Soil Science
Volume65
Issue number6
DOIs
Publication statusPublished - 12 May 2019

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Parthenium
Parthenium hysterophorus
aerobic conditions
oxic conditions
weed
rice
weeds
paddies
effect
inflorescences

Cite this

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title = "Effect of different densities of parthenium weed (Parthenium hysterophorus L.) on the performance of direct-seeded rice under aerobic conditions",
abstract = "Parthenium weed (Parthenium hysterophorus L.) is an emerging weed species in direct-seeded aerobic systems of rice production. This two-year field study was conducted to evaluate the effect of five different densities (0, 5, 10, 15 and 20 plants m −2 ) of parthenium weed on rice yield and yield-related attributes. Parthenium weed produced ca. 38 to 178{\%} higher biomass at its densities of 10 to 20 plants m −2 as compared to the lowest density of 5 plants m −2 . The paddy yield and yield-related attributes were negatively affected with an increase in the parthenium weed density. In both years, the highest reductions in number of rice panicles (14 to 17{\%}), panicle length (10 to 11{\%}), number of grains per panicle (11 to 18{\%}), 1000-grain weight (8 to 21{\%}) and paddy yield (30 to 35{\%}) were recorded at the highest parthenium weed density (20 plants m −2 ) tested. However, the lower densities of 5 to 15 parthenium weed plants m −2 also caused 11 to 24{\%} and 12 to 26{\%} losses in paddy yield during the years 2016 and 2017, respectively. Therefore, this weed species should be controlled below the density of 5 plants m −2 to avoid the substantial yield losses (over 15{\%}) in direct-seeded rice.",
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Effect of different densities of parthenium weed (Parthenium hysterophorus L.) on the performance of direct-seeded rice under aerobic conditions. / Bajwa, Ali Ahsan; Ullah, Aman; Farooq, Muhammad; Chauhan, Bhagirath Singh; Adkins, Steve.

In: Archives of Agronomy and Soil Science, Vol. 65, No. 6, 12.05.2019, p. 796-808.

Research output: Contribution to journalArticle

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AU - Bajwa, Ali Ahsan

AU - Ullah, Aman

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