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| Web URL(s): | http://agops.ucr.edu/turf/publications/ctc/ctc30_234.pdf#page=15
Last checked: 01/24/2014
Requires: PDF Reader
Notes: Item is within a single larger file |
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| Publication Type:
| Professional |
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| Author(s): | Krueger, Robert;
Shaner, Dale |
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| Author Affiliation: | Staff Research Associate, and former Assistant Professor, respectively, Department of Botany and Plant Sciences, University of California, Riverside |
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| Title: | Germination and establishment of prostrate spotted spurge |
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| Source: | California Turfgrass Culture. Vol. 30, No. 2-4, Spring-Fall 1980, p. 15-16. |
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| Publishing Information: | Riverside, CA: Federated Turfgrass Council of California/University of California Cooperative Extension |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Germination; Weeds; Euphorbia supina; Weed control; Environmental factors; Emergence; Establishment; Stratification; Temperatures; Dormancy; Photoperiod
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| Abstract/Contents: | Brief review of environmental conditions that favor germination of prostrate spotted spurge (Euphorbia supina Raf.), a low growing summer annual weed in turf. Spurge lives from March or April until September or October. Each spurge plant produces several thousand seeds only 50% of seed produced in August and 5-10% of that produced in November germinates leaving the rest in soil for possible future site contamination. Seeds germinate only if stratified (kept cool and moist). Dormancy and stratification combine for favorable spring germination. Temperature is the most important factor controlling germination. Optimal germination occurs with alternating temperature between 60 and 110F (best between a low of 60 to 80F and high of 85 to 95F). Brief fall warm spells do not promote germination thus preventing possible death from susequent cold. Complete dark (from a dense plant canopy) inhibits germination but as low as 12.5% of full sunlight allows germination and establishment. Photoperiod does not affect germination but longer day lengths promote more vigorous growth. Emergence is optimal between depths of 1/2 to 4 inches. Water stress and soil pH above 6.0 reduces germination. Thes characteristics indicate spurge must be controlled before seed production which can occur within a month of germination and throughout the summer. Therefore, control must be season long with use of pre- and post- emergence herbicides if necessary. |
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| Language: | English |
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| References: | 0 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Krueger, R., and D. Shaner. 1980. Germination and establishment of prostrate spotted spurge. Calif. Turfgrass Cult. 30(2-4):p. 15-16. |
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| Web URL(s):
http://agops.ucr.edu/turf/publications/ctc/ctc30_234.pdf#page=15
Last checked: 01/24/2014
Requires: PDF Reader
Notes: Item is within a single larger file |
| 
MSU catalog number: SB 433 .A1 C2 |
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Digitally in TIC by file name: caltc1980sprfal |
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