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《Crops》 2011-06
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Occurrence of Weeds in Foxtail Millet Field and Herbicide Screening in Hebei South-central Region of Hebei Province

Zhou Hanzhang(National Foxtail Millet Improvement Center,Institute of Millet Crops of Hebei Academy of Agricultural and Forestry Sciences, Minor Cereal Crops Research Laboratory of Hebei Province,Shijiazhuang 050035,Hebei,China)  
Occurrence of Weeds in Foxtail Millet Field and Herbicide Screening in Hebei South-central Region of Hebei Province were investigated in this study.The results showed that weed species with the different sowing dates in foxtail millet fields were basically the same.The occurrence of weeds in spring sown millet fields had three peaks,that is,in middle ten days of May with primarily dicotyledonous weeds,in June and in July with mainly monocotyledonous weeds.The occurrence of weeds in summer sown millet fields had only 1 peak,that is in the early to mid July with primarily monocotyledonous weeds.Chemical control of weeds by the dose 1 800g/hm2 of monosulfuron plus propazine 44% WP was best,with the efficacy of significantly higher than monosulfuron 10% WP,propazine 50%WP and 2,4-D butyl ester.In spring-sown millet fields,at 79 d after applying herbicides control effect and fresh weight inhibition rate to monocotyledonous and dicotyledonous weeds were 49.19%,96.76% and 96.01%,96.03%,respectively.In summer-sown millet fields,at 55 d after applying herbicides control effect and fresh weight inhibition rate to monocotyledonous and dicotyledonous weeds were 41.13%,29.34% and 93.39%,98.15%,respectively.
【Fund】: 河北省科技支撑项目(09250307D)
【CateGory Index】: S451
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