Weed seed bank survey in cotton fields of Golestan province

Document Type : Research Paper

Authors

1 Assistant Professor, Plant Protection Research Department, Agricultural and Natural Resources Research and Education Center of Golestan, AREEO, Gorgan, Iran

2 Plant Protection Research Department, Mazandaran Agricultural and Natural Resources Research and Education Center, AREEO, Sari, Iran.

3 Agronomy Dept, Gorgan University of Agricultural Sciences and Natural Resources

4 Weed researcher, Plant Protection Research Department, Agricultural and Natural Resources Research and Education Center of Golestan, AREEO, Gorgan, Iran,

5 Assistant Professor, Cotton Research Institute, AREEO, Gorgan, Iran

Abstract

Weed seed abscission and their accumulation in the soil annually, cause formation of a persistent weed seed bank that is the origin of future weed infection for many years. In order to survey the relationship between weed seeds in soil seed bank and the weed population during growing season of cotton field, this experiment was conducted in Golestan province in 2004-2005.Based on the results, 49 species of weeds belong to 19 families were recorded that Cyperus rotundus L., Amaranthus spp., Echinochloa spp., Hibiscus terionum L., Paspalum paspaloides (Michx.)Scribner had the highest density in cotton field respectively. The most frequent weeds were Amaranthus spp., C. rotundus, Solanum nigrum L., Abutilon theophrasti Medic., Convolvulus arvensis L. and Echinochloa spp.. Survey of soil samples showed, after Amaranthus spp. that were observed in 90 % of soil samples, the most frequent weeds in soil seed bank were Stellaria media L., Chenopodium album L., C.rotundus and Portulaca oleracea L. respectively.Poa annua L., S. media, C.album, Amaranthus spp. and C. rotundus had the highest density in soil seedbank. The results showed a strong linear relationship between weed seeds in soil seedbank and seedling numbers in the cotton fields for all of weeds.
Key words: Correlations, prediction, regression, weed management.

Keywords

References

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Iranian Journal of Cotton Researches
Volume 6, Issue 1 - Serial Number 11
September 2018
Pages 65-80

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