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Acta Prataculturae Sinica ›› 2009, Vol. 18 ›› Issue (3): 214-223.

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Weed species and their chemical control in Paspalum vaginatum cv.
“Salam” at the Kingswan Countryside Club

XUE Guang1, SHEN Zheng-gao2, DU Jin-rong1, GAO Xiang2   

  1. 1.East China Weed Technology Institute, Nanjing 210007, China;
    2.Kingswan
    Countryside Club, Jintan 213200, China
  • Received:2008-08-07 Online:2009-06-20 Published:2009-06-20

Abstract: This study was conducted at the Kingswan Countryside Club between 2006 and 2008 to determine the weed species, their growth habits and life cycles. The 95 weed species found included 19 grasses, 3 sedges, and 73 broadleaved species from 29 families. Among them, 50 species only germinated in spring, 36 in the fall and the remainder in both spring and fall. During the first year of course establishment there were remnant traces of the original weed community present although more mat-forming weeds were present due to the regular cultivation practices such as mowing. Field trials showed that 65.4%-94.8% of grasses and broadleaved weeds were controlled with fall applications of Shadeout at 0.045-0.03 kg ai/ha mixed with chlosulfuron at 0.02-0.022 8 kg ai/ha at 61 and 115 DAA; 69.4%-71.2% of Lolium perenne (cv. citathon #3)and Poa annua were controlled with fall applications of Battalion at 0.045-0.052 5 kg ai/ha and Shadeout at 0.037 5-0.03 kg ai/ha at 49 plus 103 DAA. There was slight visible injury to Paspalum vaginatum cv. Salam at 2 WAA, of Shadeout at 0.06 kg ai/ha, Battalion at 0.067 5 kg ai/ha and chlosulfuron at 0.022 8 kg ai/ha with recovery at 4 WAA. There was visible injury to P. vaginatum 2-4 WAA of Shadeout at 0.18 kg ai/ha and recovery was not until 36 WAA.

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