A Dated Silt Deposit in the Ocmulgee River Valley, Georgia

1943 ◽  
Vol 8 (3) ◽  
pp. 296-297 ◽  
Author(s):  
Karl Schmitt
Keyword(s):  
National Park ◽  
National Park Service ◽  
Surface Soil ◽  
River Valley ◽  
Maximum Height ◽  
Silty Clay ◽  
Clay Loam ◽  
Silty Clay Loam ◽  
Park Service ◽  
Early Fall

During the early fall of 1941, excavations were made by the National Park Service at the Lamar site, Bibb County, Georgia, on the ground of the proposed south section of the levee which will surround the site. The area was formerly forested and is level, poorly drained, and subject to frequent flooding by the Ocmulgee River. Elevation varies little in the river valley; in the section trenched, it ranges between 276.4 feet and 278.9 feet. The occupation area of the Lamar site lies on slightly higher ground with a maximum height of 282 feet (exclusive of the mounds). The surface soil of the bottom land, including the Lamar village site, is Congaree Silty Clay Loam, a recent alluvial deposit of the Ocmulgee River.

Persistence and Movement of Picloram in Two Kansas Soils

Weed Science ◽  
1972 ◽  
Vol 20 (1) ◽  
pp. 110-116 ◽  
Author(s):  
W. M. Phillips ◽  
K. C. Feltner
Keyword(s):  
Glycine Max ◽  
Surface Soil ◽  
Soil Surface ◽  
Silty Clay ◽  
Clay Loam ◽  
Silty Clay Loam ◽  
Soil Movement ◽  
Soil Cracks

Persistence and movement of 4-amino-3,5,6-trichloropicolinic acid (picloram) were studied in silty clay loam soils located at Hays and Newton, Kansas. At Hays, picloram was applied to a Harney silty clay loam at rates of 2.24 and 3.36 kg/ha in 1963, 1964, 1965, 1966, and 1968 and at Newton to a Goessel (tentative) silty clay loam at rates of 1.12, 2.24, and 3.36 kg/ha in 1966. Fifteen, 20, or 30-cm increments of soil were taken from as deep at 2.4 m below the soil surface and bio-assayed with soybeans(Glycine max(L.) Merr. ‘Clark 63′) in 1968 and 1969. In both soils the highest concentration of phytotoxic residue remained near the soil surface, but differences between the two sites were evident. In the Goessel soil phytotoxic residues were detected only near the surface. In the Harney soil movement was uneven, but residues were detected as deep as 2.4 m below the surface. Soil cracks probably contributed to penetration of small amounts of the herbicide to as much as 2.4 m below the surface. Total picloram remaining in both soils diminished with time.

Notes on Colorado River Basin Archaeology

1948 ◽  
Vol 14 (2) ◽  
pp. 128-129 ◽  
Author(s):  
Gordon C. Baldwin
Keyword(s):  
National Park ◽  
Recent Article ◽  
National Park Service ◽  
Colorado River ◽  
River Valley ◽  
Construction Work ◽  
American Antiquity ◽  
Additional Information ◽  
Park Service ◽  
Made In

A recent article in American Antiquity entitled “Symposium on River Valley Archaeology” summarizes the present status of one of our most important and urgent problems in American archaeology today. Additional information concerning this subject, particularly with reference to the progress made in the Colorado River Valley, should be mentioned at this time.The National Park Service has been concerned with survey and salvage operations in proposed reservoir areas along the Colorado River and its tributaries for many years. Long before final construction work was completed on Hoover (formerly Boulder) Dam in 1935, several C.C.C. archaeological crews were at work under National Park Service direction in the areas to be inundated, particularly along the Virgin and Muddy rivers in southeastern Nevada.

Soil Moisture and Effectiveness of Preemergence Herbicides

Weed Science ◽  
1969 ◽  
Vol 17 (2) ◽  
pp. 257-259 ◽  
Author(s):  
R. L. Stickler ◽  
E. L. Knake ◽  
T. D. Hinesly
Keyword(s):  
Soil Moisture ◽  
Surface Soil ◽  
Silty Clay ◽  
Clay Loam ◽  
Silty Clay Loam ◽  
Giant Foxtail ◽  
Setaria Faberii ◽  
Preemergence Herbicides

The relation between soil moisture and the effectiveness of preemergence herbicides for control of giant foxtail (Setaria faberii Herrm.) was studied under greenhouse conditions using surface soil from Drummer silty clay loam with 25, 31, and 37% moisture. Herbicides used were 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (atrazine), ethyl N,N-dipropylthiocarbamate (EPTC), 3-amino-2,5-dichlorobenzoic acid (amiben), α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine (trifluralin), 2-chloro-N-isopropylacetanilide (propachlor), and 2-chloro-N-(methoxymethyl)-2',6'-diethyl-acetanilide (hereinafter referred to as CP 50144). The effectiveness of atrazine and EPTC was increased when soil moisture was raised from 25 to 31%, but no further increase was obtained at 37% moisture. Response to amiben increased linearly and response to trifluralin decreased linearly with increasing moisture. Increasing moisture within this range had little effect on propachlor or CP 50144.

Arrowshaft-straightening with a Grooved Stone

1951 ◽  
Vol 17 (2) ◽  
pp. 147-148 ◽  
Author(s):  
Aaron J. Cosner
Keyword(s):  
National Park ◽  
National Park Service ◽  
River Valley ◽  
National Monument ◽  
Salt River ◽  
Park Service ◽  
Pluchea Sericea ◽  
Salt River Valley

Not long ago at Tonto National Monument, Arizona, I discussed with Erik Reed and Lloyd Pierson, National Park Service archaeologists, the grooved stone “arrowstraightener” or “arrow-smoother” and its presumed uses. At that time I held serious doubts that this well-known object had ever had any place in the making of arrows. As a fletcher of some 20 years' experience, I had taken particular note of Pima fletchers and the manner in which they worked their shafts, and was impressed by the ease with which they took rather crooked sticks and made them straight and serviceable as arrows. These sticks were always of arrow weed, or specifically Pluchea sericea. Salt River Valley had almost no reed cane (carrizo; Phragmites), and I never saw it used. I note also the fact that no grooved stone was used in straightening Pima arrows.

Philanthropy and the National Park Service

2013 ◽  
Author(s):  
Jacqueline Vaughn ◽  
Hanna J. Cortner
Keyword(s):  
National Park ◽  
National Park Service ◽  
Park Service

Effect The Treatments of Biofertilizer and Mineral Fertilizer on Content of N P K of Soil Cultivated With Crop Corn (Zea Mays L).

2019 ◽  
Vol 9 (2) ◽  
pp. 247-256
Author(s):  
Mohammed Aajmi Salman ◽  
Jawad A. Kamal Al-Shibani
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Mineral Fertilizer ◽  
Silty Clay ◽  
Clay Loam ◽  
Potassium Fertilizer ◽  
Clay Loam Soil ◽  
Silty Clay Loam ◽  
Fall Season ◽  
Loam Soil

Beneficial microorganisms play a key role in the availability of ions minerals in the soil and use Randomized Complete Block Desing ( R.C.B.D ). The objective of this paper to the study effect of the of biofertilizer and miniral treatments on availability of NPK for crop corn zea mays L.Two types of biofertilizer are Bacterial Bacillus subtilis and Fungal Trichoderma harianum. Three levels of potassium fertilizer are (2.9533, 0.4000 and 2.9533). A field experiment in fall season of 2018 Has been conducted in silty clay loam soil. The experimental Results indicated that Bacillus and Trichoderma inoculation separately or together Have made a significant effect to increase in the availability of N P K in the soil compare to other treatments. The grain yield is where (2.9533, 0.4000 and 2.9533) of bacterial and fungal bio-fertilizer and potassium fertilizers respectively as compared to the control.

A Question Of Relevance

2020 ◽  
Vol 42 (2) ◽  
pp. 101-123
Author(s):  
Michael A. Capps
Keyword(s):  
National Park ◽  
National Park Service ◽  
Interpretive Approach ◽  
Park Service ◽  
Educational Component

Lincoln Boyhood National Memorial is an example of one memorial site that has successfully managed to retain relevance for nearly one hundred years by adapting to changes in scholarship and the expectations of its visitors. Initially created as a purely commemorative site, it has evolved into one where visitors can actively engage with the Lincoln story. By embracing an interpretive approach to managing the site, the National Park Service has been able to add an educational component to the experience of visiting the memorial that complements its commemorative nature.

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