Germination Behavior of Florida Pusley Seeds. I. Effects of Storage, Light, Temperature and Planting Depths on Germination

Biswas, P. K.; Bell, P. D.; Crayton, J. L.; Paul, K. B.

doi:10.1017/s0043174500062755

Cited by 21 publications

(27 citation statements)

References 4 publications

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“…The emergence of the F. miliacea weed seedlings decreased with the increasing planting depth. Similar results were observed by Biswas et al . (1975).…”

Section: Resultssupporting

confidence: 92%

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The effects of sowing depth and flooding on the emergence, survival, and growth of Fimbristylis miliacea (L.) Vahl

Begum¹,

Juraimi²,

Amarthalingam³

et al. 2006

Weed Biology and Management

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Glasshouse experiments were conducted from March to July 2003 to determine the effects of sowing depth, and the time, duration, and depth of flooding on the emergence, survival, and growth of Fimbristylis miliacea (L.) Vahl. The treatments that were evaluated in the first experiment were three seeding depths (0, 0.5, and 1.0 cm), while in the second experiment, three flooding depths (saturated soil with no standing water and soil with water depths of 5 and 10 cm) and three flooding durations (7, 14, and 21 days from sowing) were evaluated. In the third experiment, three flooding depths (saturated soil with no standing water, and soil with water depths of 5 and 10 cm) and four flooding regimes (7, 14, 21 or 28 days after sowing [DAS]) were evaluated. Surface seeding gave the highest emergence rate compared to the 0.5 cm and 1.0 cm soil depths. A significantly higher emergence rate was recorded with the saturated conditions than with the flooded conditions. A flooding duration of ≥ 14 days showed a clear trend of reduced emergence with increasing flooding depth. A significantly higher survival rate, plant height, root length, number of leaves, and dry matter were recorded at soil saturation followed by the 5 cm and 10 cm flooding depths when flooding was simulated at 7 and 14 DAS. When the flooding was delayed to 21 and 28 DAS, the 10 cm flooding depth was required to suppress this weed. The results provide sufficient evidence to confirm that from deeper seed burial (1 cm sowing depth), flooding depths of ≥ 5 cm of durations of 14 and 21 days and at the onset of flooding within 14 DAS were effective in suppressing the emergence and growth of F. miliacea. 1995;Begum et al. 1999) and one of the principal weeds in the Philippines, Mashhor

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“…The emergence of the F. miliacea weed seedlings decreased with the increasing planting depth. Similar results were observed by Biswas et al . (1975).…”

Section: Resultssupporting

confidence: 92%

“…The emergence of the F. miliacea weed seedlings decreased with the increasing planting depth. Similar results were observed by Biswas et al (1975). It was stated that Florida Pusley failed to emerge where seeds were buried to a depth of ≥ 1.5 cm.…”

Section: Experiments 1: Effect Of Sowing Depth On the Emergence Of Fimsupporting

confidence: 83%

The effects of sowing depth and flooding on the emergence, survival, and growth of Fimbristylis miliacea (L.) Vahl

Begum¹,

Juraimi²,

Amarthalingam³

et al. 2006

Weed Biology and Management

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“…Germination studies with annual weeds typically result in 80±90% total germination (Biswas et al, 1975;Weaver et al, 1988;Harvey & Forcella, 1993); much higher than the emergence rates observed in this study. Low rates of germination that are often observed with perennial weeds have been attributed to their ability to reproduce by vegetative means in stable plant communities (Harper, 1977).…”

Section: Resultscontrasting

confidence: 57%

The effect of thermal time and soil water on emergence of Ranunculus repens

et al. 1998

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The effect of temperature and soil available water (AW) on the emergence of Ranunculus repens␣L. was examined in artificial media in growth chambers. Two seed populations, `arable type' and `wild type', were investigated. Moisture levels were 20%, 40%, 60% and 80% AW, and temperatures were 10/5 °C, 15/7 °C, 20/10 °C and 25/15 °C. Time to onset of emergence varied from 11 to 28 days for both seed populations, primarily as a result of mean temperature. Mean thermal time (TT) required for the onset of emergence of both populations was 251 ± 45 TT. Total emergence of the `arable type' R. repens varied from 3% at 10/5 °C and 20% AW to 30% at 25/15 °C and 60% AW. Total emergence of the `wild type' was greater, ranging from 4% at 10/5 °C and 20% AW to 57% at 25/15 °C and 80% AW. Temperature and AW significantly affected total emergence. A logistic response was displayed for the cumulative emergence of both populations. Seedling emergence models based on TT were developed for both populations at each of the four levels of AW.

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“…No germination was observed at 10 or 15 C; however, there was 5% germination at 17 C. High temperatures ($ 35 C) cause a pronounced reduction in germination, similar to that found in many other weed species. For example, false broomweed (Ericameria austrotexana M. C. Johnston) germinated maximum at 20 to 25 C and declined above and below this temperature with no germination at 5 or 40 C (Biswas et al 1975). Bur cucumber (Sicyos angulatus L.) seed germination was reduced severely at temperatures below 20 C and above 30 C (Mann et al 1981).…”

Section: Resultsmentioning

confidence: 99%

“…Temperature, moisture, light, and pH requirements for germination vary considerably, depending on the weed species (Elberlein 1987;Evetts and Burnside 1972;Jain and Singh 1989;Singh and Achhireddy 1984). Some weed species can emerge from a wide range of planting depth, but others must be close to the soil surface (Biswas et al 1975;Reddy and Singh 1992;Wilson 1979).…”

mentioning

confidence: 99%

Effects of Environmental Factors on Germination and Emergence of Swallowwort

Pahlevani¹,

Rashed²,

Ghorbani³

2008

Weed Technology

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Swallowwort, a twining perennial of the Asclepiadaceae family, has become increasingly invasive in cultivated fields, orchards, fence rows, natural areas, and roadsides of some provinces in Iran. The ability of this weed to establish and develop from seed was studied in laboratory and greenhouse experiments. Optimum germination temperature was 25 C. Germination did not occur at ≤ 15 C either in dark or light. In temperature fluctuation experiments, maximum germination occurred at 30/22 C, but light fluctuations had no effect on swallowwort seed germination. At pH 4 to 9 seed germination was 44 to 66%. Osmotic potential up to −0.2 MPa had little effect on germination. Seed germination was less than 5% at −0.8 Mpa. Swallowwort seeds were not able to germinate at 300 mM NaCl; however, there was 12% germination at the 200 mM concentration. Maximum emergence occurred when the seeds were planted at 1.5 cm depth. Seedlings did not emerge when planted at 6.5 cm depth. Germination percentage of the seeds kept under immersed (water) conditions was similar to those of nonimmersing periods; however, seedling growth was greater in treatments without immersing periods.

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Germination Behavior of Florida Pusley Seeds. I. Effects of Storage, Light, Temperature and Planting Depths on Germination

Cited by 21 publications

References 4 publications

The effects of sowing depth and flooding on the emergence, survival, and growth of Fimbristylis miliacea (L.) Vahl

The effects of sowing depth and flooding on the emergence, survival, and growth of Fimbristylis miliacea (L.) Vahl

The effect of thermal time and soil water on emergence of Ranunculus repens

Effects of Environmental Factors on Germination and Emergence of Swallowwort

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