Crop growth and yield losses in wheat due to little seed canary grass infestation differ with weed densities and changes in environment O crescimento das culturas e as perdas de rendimento no trigo decorrentes da pouca infestação de sementes de alpiste diferem com as densidades de plantas daninhas e alterações no ambiente

Hussain, S., Khaliq, A., Bajwa, A. A., Matloob, A., Areeb, A., Ashraf, U., Hafeez, A. and Imran, M. (2017) Crop growth and yield losses in wheat due to little seed canary grass infestation differ with weed densities and changes in environment O crescimento das culturas e as perdas de rendimento no trigo decorrentes da pouca infestação de sementes de alpiste diferem com as densidades de plantas daninhas e alterações no ambiente. Planta Daninha, 35 1-15. doi:10.1590/S0100-83582017350100073


Author Hussain, S.
Khaliq, A.
Bajwa, A. A.
Matloob, A.
Areeb, A.
Ashraf, U.
Hafeez, A.
Imran, M.
Title Crop growth and yield losses in wheat due to little seed canary grass infestation differ with weed densities and changes in environment O crescimento das culturas e as perdas de rendimento no trigo decorrentes da pouca infestação de sementes de alpiste diferem com as densidades de plantas daninhas e alterações no ambiente
Journal name Planta Daninha
ISSN 0100-8358
1806-9681
Publication date 2017-01-01
Sub-type Article (original research)
DOI 10.1590/S0100-83582017350100073
Open Access Status DOI
Volume 35
Start page 1
End page 15
Total pages 15
Place of publication Jaboticabal, SP Brazil
Publisher Sociedade Brasileira da Ciencia das Plantas Daninha
Language eng
Subject 1303 Biochemistry
1314 Physiology
1102 Agronomy and Crop Science
1110 Plant Science
Abstract Understanding the weed interference with different sowing times of crop is inevitable for forecasting yield losses by weed infestation and designing sustainable weed management systems. A field experiment was carried out to evaluate the effects of sowing dates (20 November, 10 December) and various little seed canary grass (LCG) infestation levels (10, 20, 30 and 40 plant m) on growth and yield of wheat under semiarid conditions. Plots with two natural infestations of weeds including LCG (Unweeded control; UWC) and excluding LCG (UWC-LCG) were maintained for comparing its interference in pure stands with designated densities. A season-long weed-free (WFC) treatment was also run. All the weeds/ LCG infestation levels starting from 10 LCG plants m considerably reduced the wheat growth (leaf area index, crop growth rate, total dry matter accumulation) and hampered the yield contributing factors in both sowing dates. Presence of LCG was more detrimental for growth of late-sown wheat (10 Dec), therefore, 40 LCG plants m recorded more reductions in growth indices of wheat even than UWC. In late sown wheat crop, the grain yield losses by 40 LCG plants m and UWC were comparable, however, these losses were much greater than UWC LCG. In crux, delay in sowing of wheat not only reduced the crop growth and yield but also enhanced the LCG/weed interference. Furthermore, greater competitive ability of LCG particularly for late-sown wheat suggests that it should be controlled in order to provide healthy environment for crop plants.
Keyword Interference
Little seed canary grass
Sowing time
Weeds
Wheat yield losses
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Agriculture and Food Sciences
 
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Created: Fri, 13 Apr 2018, 14:11:20 EST