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Details of the paper
| Title |
Study on weed infestation in main cotton regions of Jiangsu Province |
| Author |
Sheng Qiang, Shouhui Wei, Jinliang Hu |
| Keywords |
cotton field; dominancy; weed infestation; Jiangsu Province |
| Journal |
Journal of Nanjing Agricultural University |
| Year,Vol,No |
2000,23(2) |
| Pages |
18-22 |
| Abstract |
The survey results showed that 124 weed species (including varieties) belonging to 37 families and 93 genera were found in the cotton fields in Jiangsu Province. Of them, 9 species were considered as worst weeds, including Digitaria sanguinalis, Acalypha australis, Echinochloa crusgalli, Eclipta prostrata, Setaria viridis, Portulaca oleracea, Leptochloa chinensis and Cephalanoplos segetum; 13 species were regional worst weeds; 20 species common weeds and the other 82 species normal weeds. Digitaria sanguinalis, Acalypha australis, Echinochloa crusgalli and Eclipta prostrata were dominant weeds of the weed communities of different cotton-growing regions in the province. One of the main factors resulted in the difference of weed occurrence was the cropping system.. In the cotton fields with rotation of rice, hydrophilous weeds such as Echinochloa crusgalli, Leptochloa chinensis and Myosolon aquaticum occurred abundantly, but in dry land cotton fields, xerophilous weed Setaria viridis, Eleusine indica, Cephalanoplos segetum, Veronica persica, Cyperus rotundus and Sonchus brachyotus were popularly found. The scale of weed infestation in cotton fields in Jiangsu was primarily 1 or 2, while the scale of 3-5 was relatively fewer. There was some different weed distribution among the four cotton-growing regions. Of the four cotton-growing regions in Jiangsu, the weed infestation of Yanjiang region was the most serious, then followed by Yanhai region and Huaibei region, but Lixiahe region was the slightest. In overall, the weed infestation in the cotton fields with dry-cropping system was more serious than that rotation of rice. |
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2005 © Weed Research Laboratory,
Institute of Plant Protection, Chinese Academy of Agricultural Sciences
Address: No 2 West Yuanmingyuan Road, Haidian District, Beijing Postcode:
100094
Telephone: (010)62815937 Email: SHWEI@WSSC.ORG.CN
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