Acta Agriculturae Boreali-Sinica

ACTA AGRICULTURAE BOREALI-SINICA ›› 2004, Vol. 19 ›› Issue (3): 92-95. doi: 10.3321/j.issn:1000-7091.2004.03.023

Special Issue: Soil fertilizer；

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Soil Temperature, Soil Moisture and Seed Burial Depth Effects on Common Crabgrass Emergence

HU Feng1, WU Ju-ying2, WANG Qing-hai2, LI Zhao-hu1   

  1. 1. The Agriculture University of China, Beijing 100094, China;
    2. Beijing Research Center of Lawns and Environment, Beijing 100089, China
  • Received:2004-05-18 Published:2004-09-28

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Abstract: A study was conducted under controlled environmental conditions to determine the effect of soil temperature, soil moisture, and depth of seed burial on the emergence of crabgrass. Emergence occurred from 15℃to 40℃but was optimal at 20℃to 30℃.Crabgrass emergence was optimal in moist soil with gravimet-ric water contents of 60%.No germination was observed in warm (40℃)，dry (20%)soils. Emergence per-centage decreased as water contents decreased of as temperature increased or decreased. A logistic equation de-scribed emergence of crabgrass at each combination of temperature and soil water contents at which emergence occurred. Emergence was greatest at soil depths of 2 cm to 3 cm.

Key words: Emergence model, Common crabgrass, Planting depth

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HU Feng, WU Ju-ying, WANG Qing-hai, LI Zhao-hu. Soil Temperature, Soil Moisture and Seed Burial Depth Effects on Common Crabgrass Emergence[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2004, 19(3): 92-95. doi: 10.3321/j.issn:1000-7091.2004.03.023.

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