Skip to main content Accessibility help
×
Home

Crowfootgrass (Dactyloctenium aegyptium) Germination and Response to Herbicides in the Philippines

  • Bhagirath Singh Chauhan (a1)

Abstract

Crowfootgrass, a C4 species, is one of the principal weeds of dry-seeded rice in Asia. Weed management decisions for this species can be derived from knowledge of its seed germination biology. Experiments were conducted in the laboratory and screenhouse to determine the effects of light, alternating day/night temperatures, water stress, seed burial depth, and rice residue on seed germination and seedling emergence of crowfootgrass and to evaluate the response of this weed to commonly available selective POST herbicides in the Philippines. Light stimulated seed germination, but it was not an absolute requirement for germination. Germination in the light/dark regime was greater at alternating day/night temperatures of 25/15 C (92%) than at 30/20 (70%) or 35/25 C (44%). The osmotic potential required for 50% inhibition of maximum germination was −0.23 MPa, although some seeds germinated at −0.6 MPa. Seedling emergence was greatest for the seeds placed on the soil surface (64%), and emergence declined with increased burial depth in soil. No seedlings emerged from a burial depth of 6 cm or greater. Seedling emergence of crowfootgrass was reduced by the addition of rice residue to the soil surface at rates equivalent to 4 to 6 Mg ha−1. Fenoxaprop-p-ethyl + ethoxysulfuron at 45 g ai ha−1 provided excellent control of crowfootgrass when applied at the four- (99%) and six-leaf (86%) stage. The information gained from this study could contribute to developing components of integrated weed management strategies for crowfootgrass. Soil inversion by tillage to bury weed seeds below their maximum depth of emergence, use of crop residue as mulch, and early application of an effective POST herbicide could serve as important tools for managing crowfootgrass.

Copyright

Corresponding author

Corresponding author's E-mail: b.chauhan@cgiar.org

References

Hide All
Anderson, L. and Milberg, P. 1998. Variation in seed dormancy among mother plants, populations and years of seed collection. Seed Sci. Res. 8:2938.
Baskin, C. C. and Baskin, J. M. 1998. Seeds: Ecology, Biogeography, and Evolution of Dormancy and Germination. San Diego, CA Academic. 666 p.
Baskin, C. C., Thompson, K., and Baskin, J. M. 2006. Mistakes in germination ecology and how to avoid them. Seed Sci. Res. 16:165168.
Benvenuti, S. 2003. Soil texture involvement in germination and emergence of buried weed seeds. Agron. J. 95:191198.
Bolfrey-Arku, G. E.-K., Chauhan, B. S., and Johnson, D. E. 2011. Seed germination ecology of itchgrass (Rottboellia cochinchinensis). Weed Sci. 59:182187.
Burke, I. C., Thomas, W. E., Spears, J. F., and Wilcut, J. W. 2003. Influence of environmental factors on after-ripened crowfootgrass (Dactyloctenium aegyptium) seed germination. Weed Sci. 51:342347.
Chauhan, B. S. and Johnson, D. E. 2008a. Influence of environmental factors on seed germination and seedling emergence of eclipta (Eclipta prostrata) in a tropical environment. Weed Sci. 56:383388.
Chauhan, B. S. and Johnson, D. E. 2008b. Germination ecology of goosegrass (Eleusine indica): an important grass weed of rainfed rice. Weed Sci. 56:699706.
Chauhan, B. S. and Johnson, D. E. 2008c. Germination ecology of southern crabgrass (Digitaria ciliaris) and India crabgrass (Digitaria longiflora): two important weeds of rice in tropics. Weed Sci. 56:722728.
Chauhan, B. S. and Johnson, D. E. 2009. Germination ecology of spiny (Amaranthus spinosus) and slender amaranth (A. viridis): troublesome weeds of direct seeded rice. Weed Sci. 57:379385.
Chauhan, B. S. and Johnson, D. E. 2010. The role of seed ecology in improving weed management strategies in the tropics. Adv. Agron. 105:221262.
Chauhan, B. S., Gill, G., and Preston, C. 2006a. Influence of tillage systems on vertical distribution, seedling recruitment and persistence of rigid ryegrass (Lolium rigidum) seed bank. Weed Sci. 54:669676.
Chauhan, B. S., Gill, G., and Preston, C. 2006b. Tillage system effects on weed ecology, herbicide activity and persistence: a review. Aust. J. Exp. Agric. 46:15571570.
Chauhan, B. S., Singh, V. P., Kumar, A., and Johnson, D. E. 2011. Relations of rice seeding rates to crop and weed growth in aerobic rice. Field Crops Res. 121:105115.
Galinato, M. I., Moody, K., and Piggin, C. M. 1999. Upland rice weeds of South and Southeast Asia. Makati City, Philippines International Rice Research Institute. 156 p.
GenStat 8.0. 2005. GenStat Release 8 Reference Manual. Oxford, United Kingdom. VSN International. 343 p.
Ghorbani, R., Seel, W., and Leifert, C. 1999. Effects of environmental factors on germination and emergence of Amaranthus retroflexus . Weed Sci. 47:505510.
Gopal, R., Jat, R. K., Malik, R. K., et al. 2010. Direct dry seeded rice production technology and weed management in rice based systems. Technical Bulletin. New Delhi, India International Maize and Wheat Improvement Center. 28 p.
Holm, L. G., Plucknett, D. L., Pancho, J. V., and Herberger, J. P. 1977. The World's Worst Weeds: Distribution and Biology. Honolulu, HI University of Hawaii Press. 609 p.
Michel, B. E. 1983. Evaluation of the water potentials of solutions of polyethylene glycol 8000 both in the absence and presence of other solutes. Plant Physiol. 72:6670.
Okusanya, O. T. and Sonaike, A. A. 1991. Germination behaviour of Dactyloctenium aegyptium from two localities in Nigeria. Physiol. Plantarum. 81:489494.
Pandey, S. and Velasco, L. 2005. Trends in crop establishment methods in Asia and research issues. Pages 178181 in Toriyama, K. Heong, K. L., and Hardy, B., eds. Rice is Life: Scientific Perspectives for the 21st Century. Los Baños, Philippines International Rice Research Institute and Tsukuba, Japan: Japan International Research Center for Agricultural Sciences.
Rao, A. N., Johnson, D. E., Sivaprasad, B., Ladha, J. K., and Mortimer, A. M. 2007. Weed management in direct-seeded rice. Adv. Agron. 93:153255.
Schütz, W., Milberg, P., and Lamont, B. B. 2002. Seed dormancy, after-ripening and light requirements of four annual Asteraceae in south-western Australia. Ann. Bot. 90:707714.
Singh, S., Bhusan, L., Ladha, J. K., Gupta, R. K., Rao, A. N., and Sivaprasad, B. 2006. Weed management in dry-seeded rice (Oryza sativa) cultivated in the furrow-irrigated raised-bed planting system. Crop Prot. 25:487495.
Teasdale, J. R. and Mohler, C. L. 1993. Light transmittance, soil temperature, and soil moisture under residue of hairy vetch and rye. Agron. J. 85:673680.
Woolley, J. T. and Stoller, E. 1978. Light penetration and light-induced seed germination in soil. Plant Physiol. 61:597600.

Keywords

Related content

Powered by UNSILO

Crowfootgrass (Dactyloctenium aegyptium) Germination and Response to Herbicides in the Philippines

  • Bhagirath Singh Chauhan (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.