Integrated weed management using planting pattern, cultivar, and herbicide in dry-seeded rice in Northwest India

Mahajan, Gulshan, Poonia, Vikas and Chauhan, Bhagirath S. (2014) Integrated weed management using planting pattern, cultivar, and herbicide in dry-seeded rice in Northwest India. Weed Science, 62 2: 350-359. doi:10.1614/WS-D-13-00115.1


Author Mahajan, Gulshan
Poonia, Vikas
Chauhan, Bhagirath S.
Title Integrated weed management using planting pattern, cultivar, and herbicide in dry-seeded rice in Northwest India
Journal name Weed Science   Check publisher's open access policy
ISSN 0043-1745
1550-2759
Publication date 2014-04
Year available 2014
Sub-type Article (original research)
DOI 10.1614/WS-D-13-00115.1
Open Access Status
Volume 62
Issue 2
Start page 350
End page 359
Total pages 10
Place of publication Lawrence, United States
Publisher Weed Science Society of America
Language eng
Formatted abstract
Field experiments were conducted in Punjab, India, in 2011 and 2012 to study the integrated effect of planting pattern [uniform rows (20-cm spacing) and paired rows (15-, 25-, and 15-cm spacing)], cultivars (PR-115 and IET-21214), and weed control treatments (nontreated control, pendimethalin 750 g ai ha-1, bispyribac-sodium 25 g ai ha-1, and pendimethalin 750 g ha-1 followed by bispyribac-sodium 25 g ha -1) on weed suppression and rice grain yield in dry-seeded rice. In the nontreated control, IET-21214 had higher grain yield than PR-115 in both planting patterns. However, such differences were not observed within the herbicide treatment. IET-21214 in paired rows, even in nontreated control, provided grain yield (4.7 t ha-1) similar to that in uniform rows coupled with the sole application of pendimethalin (4.3 t ha-1) and bispyribac-sodium (5.0 t ha-1). In uniform rows, sequential application of pendimethalin (PRE) and bispyribac-sodium (POST) provided the highest grain yield among all the weed control treatments and this treatment produced grain yield of 5.9 and 6.1 t ha-1 for PR-115 and IET-21214, respectively. Similarly, in paired rows, PR-115 in paired rows treated with sequential application of pendimethalin and bispyribac-sodium had highest grain yield (6.1 t ha-1) among all the weed control treatments. However, IET-21214 with the sole application of bispyribac-sodium produced grain yield similar to the sequential application of pendimethalin and bispyribac-sodium. At 30 days after sowing, PR-115 in paired rows coupled with pendimethalin application accrued weed biomass (10.7 g m-2) similar to the sequential application of pendimethalin and bispyribac-sodium coupled with uniform rows (8.1 g m-2). Similarly, IET-21214 with bispyribac-sodium application provided weed control similar to the sequential application of pendimethalin and bispyribac-sodium. Our study implied that grain yield of some cultivars could be improved by exploring their competitiveness through paired-row planting patterns with less use of herbicides.
Nomenclature: Bispyribac-sodium; pendimethalin; rice (Oryza sativa L.).
Keyword Cultural manipulations
Planting geometry
Sequential spray
Weed competition
Weedcompetitive cultivars
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
Queensland Alliance for Agriculture and Food Innovation
 
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