A Soil‐Sampling Machine for Obtaining Two‐, Three‐, and Four‐Inch Diameter Cores of Undisturbed Soil to a Depth of Six Feet

Kelley, Omer J.; Hardman, James A.; Jennings, David S.

doi:10.2136/sssaj1948.036159950012000c0018x

Cited by 31 publications

(13 citation statements)

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“…A modification of the soil-block washing method was developed in 1947 employing a soil sampling machine mounted on the back of a truck. This apparatus enabled the sampler to collect 2 II 4" diameter samples to a depth of 6' (Kelley, Hardman and Jennings 1947). These samples were virtually undisturbed and could be sec tioned as desired.…”

Section: Literature Reviewmentioning

confidence: 99%

Root Dynamics of a Shortgrass Ecosystem

Bartos¹,

Sims²

1974

Journal of Range Management

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OF DISSERTATION ROOT DYNAMICS OF A SHOR TGRASS ECOSYSTEMSeasonal dynamics of roots of a shortgrass system were deter mined by samples collected at two week intervals for two growing seasons (1969)(1970) with a fall and winter sampling period in between.Soil cores were taken to a depth of either 10 cm or 80 cm; the deep cores were used to determine the entire profile distributions of roots.The cores were washed free of soil particles and then the root mass was dried, weighed, ashed and reweighed. All values were expressed on an ash-free basis.Sixty percent of the root weight was in the 0-10 cm segment and 75% was found in the upper 20 cm of the soil profile. The upper 10 em increment had significant variations between dates, but the lower levels remained quite constant.Four grazing treatments (none, light, moderate, heavy) were used to determine if grazing had an effect on the root mas s. No significant differences were found among the four treatments.The usual concept of substrate storage in roots and subsequent

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Section: Literature Reviewmentioning

confidence: 99%

Root Dynamics of a Shortgrass Ecosystem

Bartos¹,

Sims²

1974

Journal of Range Management

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“…Root distribution data were obtained by taking undisturbed soil cores to a depth of 5 feet with soil coring machine developed by Kelley et a!. ( 7) and according to the procedures described by Bloodworth et al ( 3) . Root distribution data were obtained on the medium-textured soils in 1955 and on the fine-textured soils in 1960 and 1961.…”

Section: Methodsmentioning

confidence: 99%

Influence of Soil Texture and Rainfall on the Response of Cotton to Moisture Regime¹

Gerard¹,

Namken²

1966

Agronomy Journal

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Irrigation studies indicate that the water management requirement of cotton is dependent upon soil texture and related rooting characteristics of the plants. Cotton on medium‐textured soils develops an extensive root system which is able to extract water to depths of 4 to 5 feet (2). Moisture depletion patterns on fine‐textured soils indicate that soil moisture extraction is largely restricted to the surface 2 feet. Cotton on the medium‐textured soils needs only 1 or 2 irrigations, depending on rainfall, to produce satisfactory yields. Cotton on the fine‐textured soils should be irrigated every 10 to 15 days, with the first irrigation applied at the first bloom; 4 to 6 light irrigations during blooming and fruiting period are required to produce satisfactory yields. Summer rainfall often supplies sufficient water to produce 80 to 90% of the yield potential on medium‐textured soils but only 50% of yield potential on fine‐textured soils. Lack of sufficient absorbing roots prevents cotton from extracting sufficient water during peak demand period from depths below its primary root zone (0 to 3 feet) on medium‐textured soil. Extraction of water from below its primary root zone (top foot) is insufficient to prevent reduction in growth and yield of cotton grown on fine‐textured soil.

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“…In 1955, undisturbed soil cores, 3.875 inches in diameter, were removed to a depth of 72 inches using a soil-core sampling machine developed by Kelley et al ( 7). A thin surface consisting largely of dead plant material was removed with a sharp blade and the remainder of the soil column was divided into 6-inch sections.…”

Section: Methodsmentioning

confidence: 99%

Root Development of Coastal Bermudagrass with High Nitrogen Fertilization¹

Holt¹,

Fisher

1960

Agronomy Journal

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Synopsis Coastal bermudagrass root weight per acre remained at a high level while nitrogen content of the roots, and organic matter content of the soil increased slightly as fertilizer nitrogen rates increased from 0 to 1600 pounds per acre. Hay yields were greatly increased with the same treatments resulting in an 8‐fold change in the root‐top ratio. Stands and yields have been maintained over a 6‐year period with nitrogen treatments ranging from 0 to 1600 pounds per acre.

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A Soil‐Sampling Machine for Obtaining Two‐, Three‐, and Four‐Inch Diameter Cores of Undisturbed Soil to a Depth of Six Feet

Cited by 31 publications

References 0 publications

Root Dynamics of a Shortgrass Ecosystem

Root Dynamics of a Shortgrass Ecosystem

Influence of Soil Texture and Rainfall on the Response of Cotton to Moisture Regime¹

Root Development of Coastal Bermudagrass with High Nitrogen Fertilization¹

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A Soil‐Sampling Machine for Obtaining Two‐, Three‐, and Four‐Inch Diameter Cores of Undisturbed Soil to a Depth of Six Feet

Cited by 31 publications

References 0 publications

Root Dynamics of a Shortgrass Ecosystem

Root Dynamics of a Shortgrass Ecosystem

Influence of Soil Texture and Rainfall on the Response of Cotton to Moisture Regime1

Root Development of Coastal Bermudagrass with High Nitrogen Fertilization1

Contact Info

Product

Resources

About

Influence of Soil Texture and Rainfall on the Response of Cotton to Moisture Regime¹

Root Development of Coastal Bermudagrass with High Nitrogen Fertilization¹