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Weed Survival in Yard Waste Mulch

  • Oleg Daugovish (a1), James Downer (a1), Ben Faber (a1) and Milton McGiffen (a2)

Abstract

Field studies were conducted near Oxnard, CA, to assess propagule survivability of two annual and two perennial weed species in 7.6 m3 static piles of fresh or aged yard waste mulch over a 56 d period. Mulch temperatures > 60 C generated at depths > 30 cm in fresh mulch caused all weed propagule mortality, whereas sublethal temperatures at shallower depths in fresh, and at all depths in aged piles allowed propagule survival. A controlled environment laboratory experiment suggested ≥ 1 d exposure provides 100% mortality of seed of little mallow at 72 C, California burclover seed (without burs) at 85 C, rhizomes of bermudagrass at 69 C, and nutlets of yellow nutsedge at 70 C. These studies indicate that reinfested, aged mulch does not produce sufficient heat to destroy weed propagules and, therefore, may become a weed-carrying substrate. Fresh mulch should be mixed to expose surviving weed propagules at shallow depths to lethal temperatures found at 30 cm or deeper in fresh mulch piles.

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Corresponding author

Corresponding author's E-mail: odaugovish@ucdavis.edu

References

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Chaney, R. L. 1991. Land application of composted municipal solid waste: Public health, safety, and environmental issues. in. Proceedings of the National Conference on Solid Waste Composting. Washington, DC Solid Waste Composting Council. 6183.
Downer, A. J. and Faber, B. 1999. Weed control problems using greenwaste. Proc. Calif. Weed Sci. Soc. 51:5155.
Egley, G. H. 1990. High-temperature effects on germination and survival of weed seeds in soil. Weed Sci. 38:429435.
Faber, B. A., Downer, A. J., Menge, J., and Ohr, H. 1996. Mulch effects on avocado root rot. in. Proceedings of the World Avocado Congress III, 1995. Málaga, Spain International Avocado Society. 412416.
Haar, M. J., Fennimore, S. A., and Ajwa, H. A. 2003. Chloropicrin effect on weed viability. Crop Prot. 22:109115.
Hartz, T. K. and Giannini, C. 1998. Duration of composting of yardwastes affects both physical characteristics of compost and plant growth. Hortscience 33:11921196.
Hembree, K. 1998. Developing a program for the control of yellow nutsedge. Proc. Calif. Weed Sci. Soc. 50:180182.
Lemeshow, S. and Hosmer, D. W. 1982. A review of goodness-of-fit statistics for use in the development of logistic regression models. Am. J. Epidemiol. 115:92116.
Mitich, L. W. 1989. History and taxonomy of bermudagrass. Proc. Calif. Weed Sci. Soc. 41:181188.
Porqueddu, C., Loi, A., and Cocks, P. S. 1996. Hardseededness and pattern of hard seed breakdown in Sardinia populations of Medicago polymorpha under field conditions. J. Agric. Sci. 126:161168.
SAS 1991. SAS/STAT Users Guide, Version 6, 4th ed. Volume2. Cary, NC SAS Institute.
Sawma, J. T. and Mahler, C. L. 2002. Evaluating seed viability by an unimbibed seed crush test in comparison with the tetrazolium test. Weed Technol. 16:781786.
Sowers, R. S. and Welterlen, M. S. 1988. Seasonal establishment of bermudagrass using plastic and straw mulches. Agron. J. 80:144148.
Webster, T. 2003. High temperatures and durations of exposure reduce nutsedge (Cyperus spp.) tuber viability. Weed Sci. 51:10101015.
Wiese, A. F., Sweeten, J. M., Bean, B. W., Salisbury, C. D., and Chenault, E. W. 1998. High temperature composting of cattle feedlot manure kills weed seed. Appl. Eng. Agric. 14:377380.

Keywords

Weed Survival in Yard Waste Mulch

  • Oleg Daugovish (a1), James Downer (a1), Ben Faber (a1) and Milton McGiffen (a2)

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