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| Publication Type:
| Refereed |
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| Author(s): | Lapham, Jon;
Drennan, Donald S. H. |
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| Title: | The Fate of Yellow Nutsedge (Cyperus Esculentus) Seed and Seedlings in Soil |
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| Source: | Weed Science. Vol. 38, No. 2, March 1990, p. 125-128. |
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| Publishing Information: | Champaign, IL: Weed Science Society of America |
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| Keywords: | TIC Keywords: Cyperus esculentus; Seed longevity; Seed dormancy; Seed viability; Germination; Soil moisture; Seedlings
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| Geographic Terms: | Zimbabwe |
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| Abstract/Contents: | Changes in dormacy and viability of freshly harvested seed of yellow nutsedge buried in the field, at depths of 5, 25, and 50 mm, were studied over a 2-yr period. The number of dormant, viable seed decreased most rapidly at 5 mm because more seed lost their dormacy and germinated (up to 30%) than at lower depths. Loss of viability though decay of seed appeared similar at all depths. No seedlings emerged from any depth. In a laboratory experiment, conducted in optimal soil moisture conditions, seedlings emerged from all seed that germinated, demonstrating that adequate soil moisture was critical for seedling establishment. This was substantiated in a second field experiment in which irrigation and mulching greatly increased seedling survival. The number of seedlings surviving in irrigated plots was 0.78% of seed sown and 0.03% in the rain-fed plots. The role of seed in the establishment of yellow nutsedge infestations is probably of little importance in dryland cropping areas despite the longevity and viability of the seed. |
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| Language: | English |
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| References: | 18 |
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| Note: | Tables
Figures |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Lapham, J., and D. S. H. Drennan. 1990. The Fate of Yellow Nutsedge (Cyperus Esculentus) Seed and Seedlings in Soil. Weed Sci. 38(2):p. 125-128. |
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MSU catalog number: SB 610 .W38 |
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