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Phenological and Growth Interactions between Velvetleaf (Abutilon theophrasti M.) and Cotton (Gossypium hirsutum L.)

Author

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  • Cortes-Martín J.A.
  • Mendiola-Ubillo M.A.
  • Castejon-Munoz M.

Abstract

The phenology and growth of A. theophrasti in competition with cotton, and the influenced of weed sowing time andweed plant density on phenology and growth were examined in several field studies conducted over the period2000–2002. A. theophrasti was found to produce three cohorts that emerged in a staggered manner from April 21 toJune 20. The first cohort emerged simultaneously with cotton under a plastic cover and the second by the time cottonplants had 5–6 true leaves. Flowering in these two cohorts started at 572–594 growing degree-days (GDD), bollripening (stage H) at 800–885 GDD and boll drying at 1020–1037 GDD.Velvetleaf and cotton cotyledons were formed simultaneously at all weed sowing densities. Also, plant height of A.theophrasti increased with increasing density, whereas cotton height decreased due to shad and competition.

Suggested Citation

  • Cortes-Martín J.A. & Mendiola-Ubillo M.A. & Castejon-Munoz M., 2010. "Phenological and Growth Interactions between Velvetleaf (Abutilon theophrasti M.) and Cotton (Gossypium hirsutum L.)," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 2(4), pages 155-155, November.
    • Handle: RePEc:ibn:jasjnl:v:2:y:2010:i:4:p:155
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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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