The Minimum Temperature of Germination of Seeds<sup>1</sup>

Coffman, F. A.

doi:10.2134/agronj1923.00021962001500070001x

Cited by 27 publications

(14 citation statements)

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“…Although soil temperatures for the manure treatments in our study were cooler than the control in the spring, the temperatures were not low enough to restrict germination of barley silage, which is the main crop grown on irrigated land in southern Alberta. Optimum soil temperature for germination of barley is > 3°C (Coffman 1923). Although soil temperature can affect chemical and biological processes, and freeze-thaw cycles can affect soil structure (Brady 1974), it is likely that the significant manure treatment effects on our soil temperatures were too small to be of any practical significance.…”

Section: Seasonal Soil Temperaturementioning

confidence: 99%

Soil physical properties of a Chernozemic clay loam after 24 years of beef cattle manure application

Miller¹,

Sweetland²,

Chang³

2002

Can. J. Soil. Sci.

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Miller, J. J., Sweetland, N. J. and Chang, C. 2002. Soil physical properties of a Chernozemic clay loam after 24 years of beef cattle manure application. Can. J. Soil Sci. 82: 287-296. Limited information exists on the influence of long-term application of beef cattle manure on soil physical properties in the Canadian prairies. A site on a clay loam soil (Dark Brown Chernozem) at Lethbridge was used to determine the effect of increased rates of manure application on selected soil physical properties in 1997 and 1998. The manure (from an unpaved feedlot) was applied annually in the fall for 24 yr at one, two and three times the 1973 recommended rates under dryland (0, 30, 60, 90 Mg ha -1 wet basis) and irrigation (0, 60, 120, 180 Mg ha -1 ). There was a significant (P < 0.05) decrease in the sand content of soil (0-10, 10-20 cm) with increased rates of manure application; and an increase in clay content for the 60 and 120 Mg ha -1 rates compared to the control under irrigation. There was a significant and negative linear relationship between increased rates of manure application and bulk density (0-5, 10-15 cm) for most seasons, and season affected bulk density values for a given manure rate. Penetration resistance (0-14 cm) was unaffected by increased rates of manure application under dryland. Under irrigation, it was significantly reduced at only the 3.5 cm and 10.5 cm depths in 1997, and at only the 3.5 cm depth in 1998. Air permeability was generally unaffected by increased rates of manure application, except for the 0-5 cm depth under irrigation, where it was significantly lowered at the highest application rate. Soil temperatures (0, 10, 20 cm) were lower under increased rates of marnure application at the 10 and 20 cm depths in the spring and summer under dryland, and they were higher at these two depths in the winter. Under irrigation, soil temperatures were lower with increased rates of manure application at the 20-cm depth in the spring, and they were higher at the 20-cm depth in the fall, and at the 0-and 20-cm depths in the winter. Overall, soil physical properties generally had a neutral or positive response to 24 yr of annual manure application at high rates, and should not cause any detrimental effects to the soil's physical condition.

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Section: Seasonal Soil Temperaturementioning

confidence: 99%

Soil physical properties of a Chernozemic clay loam after 24 years of beef cattle manure application

Miller¹,

Sweetland²,

Chang³

2002

Can. J. Soil. Sci.

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“…A notable example of this would be the germination obtained by Coffman (3) of winter wheat, rye, barley and alfalfa with the seeds practically u enclosed in lee.…”

Section: Temperaturementioning

confidence: 99%

Sorghum Seed Germination as Affected by Moisture and Temperature

Evans¹,

Stickler²,

Laude³

1961

Transactions of the Kansas Academy of Science (1903-)

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“…Its influence on plants development and seed germination has been reported in the literature (Coffman, 1923;Gist & Mott, 1957;Dubetz et al, 1962;Allmaras et al, 1964;Smith, 1968).…”

Section: Introductionmentioning

confidence: 99%

Low-cost microprocessed instrument for evaluating soil temperature profile

Cruvinel

2000

Pesq. agropec. bras.

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-This paper describes a low-cost microprocessed instrument for in situ evaluating soil temperature profile ranging from -20.0°C to 99.9°C, and recording soil temperature data at eight depths from 2 to 128 cm. Of great importance in agriculture, soil temperature affects plant growth directly, and nutrient uptake as well as indirectly in soil water and gas flow, soil structure and nutrient availability. The developed instrument has potential applications in the soil science, when temperature monitoring is required. Results show that the instrument with its individual sensors guarantees ±0.25°C accuracy and 0.1°C resolution, making possible localized management changes within decision support systems. The instrument, based on complementary metal oxide semiconductor devices as well as thermocouples, operates in either automatic or non-automatic mode.Index terms: soil management equipment, thermal properties, microprocessors, sensors. INSTRUMENTO MICROPROCESSADO DE BAIXO CUSTO PARA AVALIAÇÃODA TEMPERATURA EM PERFIL DE SOLO RESUMO -Este artigo descreve um instrumento microprocessado de baixo custo para avaliação in situ da temperatura em perfil de solo na faixa de -20,0°C a 99,9°C com armazenagem de dados de até oito profundidades, de 2 a 128 centímetros. A temperatura do solo é de grande importância para o crescimento de plantas, absorção de nutrientes, fluxo de gases e estrutura. O instrumento desenvolvido encontra várias aplicações na área da ciência do solo, onde o monitoramento de temperatura do solo é requerido. Resultados mostram que a caracterização do instrumento e seus sensores individuais garantem uma acurácia de ±0,25°C e uma resolução de 1,0°C. Também proporciona a produtores ou pesquisadores a oportunidade do manejo localizado para sistemas de tomada de decisão. O instrumento é baseado em dispositivos semicondutores com tecnologia de óxido metálico complementar e termopares. E pode operar tanto no modo manual quanto no modo automático.

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The Minimum Temperature of Germination of Seeds¹

Cited by 27 publications

References 0 publications

Soil physical properties of a Chernozemic clay loam after 24 years of beef cattle manure application

Soil physical properties of a Chernozemic clay loam after 24 years of beef cattle manure application

Sorghum Seed Germination as Affected by Moisture and Temperature

Low-cost microprocessed instrument for evaluating soil temperature profile

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The Minimum Temperature of Germination of Seeds1

Cited by 27 publications

References 0 publications

Soil physical properties of a Chernozemic clay loam after 24 years of beef cattle manure application

Soil physical properties of a Chernozemic clay loam after 24 years of beef cattle manure application

Sorghum Seed Germination as Affected by Moisture and Temperature

Low-cost microprocessed instrument for evaluating soil temperature profile

Contact Info

Product

Resources

About

The Minimum Temperature of Germination of Seeds¹