Corn and Cucurbits from Wetherill Mesa

1965 ◽  
Vol 19 ◽  
pp. 136-152 ◽  
Author(s):  
Hugh C. Cutler ◽  
Winton Meyer
Keyword(s):  
United States ◽  
Cucurbita Pepo ◽  
The United States ◽  
Bottle Gourd ◽  
Lagenaria Siceraria ◽  
Plant Parts ◽  
Northern Arizona ◽  
Growing Seasons ◽  
Slow Development ◽  
Agricultural Areas

AbstractMost corn from the Mesa Verde area belongs to a complex derived from hybridization of a small-cobbed flint-pop corn with an 8-rowed flour corn. This cross produced 12- to 14-rowed flint and flour corn (the typical Basketmaker corn) and the variable Pima-Papago corn. After Pueblo I, probably late Pueblo II, there was an increase in the number of 8-rowed cobs and a decrease in 12- to 14-rowed cobs. The corn is similar to collections from sites of comparable age excavated in northern Arizona near Navajo Mountain. The uniformity and the slow development of corn types probably reflect peripheral conditions, especially adaptation to short growing seasons and limited cultural interchange.Practically all of the squash was Cucurbita pepo, the species which spread over all agricultural areas of the United States. There were a few specimens of Cucurbita mixta and of the bottle gourd, Lagenaria siceraria. Some rinds of the two species of Cucurbita gave evidence of their use for scrapers and containers, uses to which the bottle gourd is put almost exclusively in sites to the south. The rarity of the bottle gourd and the absence of seeds and plant parts of cotton suggest that these plants were rarely, if ever, grown in the region.

scholarly journals Powdery Mildew Resistant Rootstocks that Impart Tolerance to Grafted Susceptible Watermelon Scion Seedlings

Plant Disease ◽  
2018 ◽  
Vol 102 (7) ◽  
pp. 1290-1298 ◽  
Author(s):  
Chandrasekar S. Kousik ◽  
Mihir Mandal ◽  
Richard Hassell
Keyword(s):  
United States ◽  
Powdery Mildew ◽  
Disease Severity ◽  
Citrullus Lanatus ◽  
The United States ◽  
Bottle Gourd ◽  
Economic Losses ◽  
Podosphaera Xanthii ◽  
Lagenaria Siceraria ◽  
True Leaf

Powdery mildew (PM) is a major foliar disease causing serious economic losses of cucurbit crops grown in the United States. The pathogen Podosphaera xanthii, which causes PM, is known to infect seedlings, stems, foliage, petioles, and fruit of cucurbit crops. In recent years, grafting watermelon on resistant rootstocks for managing soilborne diseases has been gaining popularity in the U.S.A. However, grafting for managing foliar diseases has not yet received adequate attention. Three greenhouse experiments were conducted during the summer months of 2012, 2013, and 2014 to determine if PM-resistant rootstocks could impart resistance to a susceptible watermelon scion. Susceptible watermelon scion ‘Mickey Lee’ seedlings were grafted onto 25 watermelon (Citrullus lanatus, C. amarus, C. mucosospermus) and four bottle gourd (Lagenaria siceraria) rootstocks. Grafted plants were inoculated with a 2 × 104 conidia ml−1 suspension of P. xanthii conidia and disease severity was rated 14 days after inoculation. Mickey Lee grafted on six PM-resistant watermelon rootstocks had significantly (P ≤ 0.05) lower PM severity on cotyledons, 2nd true leaf, and upper leaves (rating for 3rd to 7th or 8th true leaf) compared with Mickey Lee grafted on susceptible watermelon USVL677-PMS or bottle gourd USVL848-PMS rootstocks. However, some of the resistant watermelon rootstocks did not impart significant resistance to the scion. The resistant bottle gourd rootstocks USVL482-PMR and USVL351-PMR provided significantly greater levels of resistance, compared with many of the resistant watermelon rootstocks. Grafting watermelon on resistant rootstocks may help mitigate the effects of PM on susceptible scion seedlings.

A 7,290-Year-Old Bottle Gourd from the Windover Site, Florida

1990 ◽  
Vol 55 (2) ◽  
pp. 354-360 ◽  
Author(s):  
Glen H. Doran ◽  
David N. Dickel ◽  
Lee A. Newsom
Keyword(s):  
United States ◽  
Organic Materials ◽  
Bottle Gourd ◽  
Lagenaria Siceraria ◽  
Eastern United States ◽  
East Central ◽  
Central Florida

A bottle gourd (Lagenaria siceraria) recovered from a burial context at the Windover site (8 BR246) in east-central Florida has been dated directly to 7,290 ± 120 radiocarbon years B.P. This provides the earliest documentation of bottle gourds north of Mexico and demonstrates approximate contemporaneity with other eastern United States Cucurbitacae. Investigations of wet sites such as Windover, while requiring substantially greater consideration of conservation than in typical dry sites, greatly expands the recovery of organic materials enabling broader insights to prehistoric processes.

Disparate Designs

2019 ◽  
pp. 226-282
Author(s):  
Maurice Crandall
Keyword(s):  
United States ◽  
New Mexico ◽  
Federal Government ◽  
Regional Economy ◽  
Electoral Politics ◽  
Boarding School ◽  
The United States ◽  
Public Officials ◽  
Northern Arizona ◽  
Town Government

This chapter illustrates how the United States pursued a variety of policies in its attempts to incorporate Indigenous peoples in Arizona during the territorial period. Hopis in northern Arizona appeared to be ideal candidates for citizenship. The federal government attempted allotment in severalty, boarding school education, opening business ventures in Hopi territory, and outright force, but Hopis proved resistant to all such efforts, never embracing citizenship and the franchise. After decades of genocidal policies by the governments of Sonora and Mexico, many Yaquis eventually sought refuge across the border in the United States, establishing communities such as Pascua and Guadalupe. As refugees in southern Arizona, Yaquis largely stayed out of the eyes of public officials while participating widely in the regional economy. They did not participate in Arizona electoral politics, nor did they fully transplant their Spanish-influenced systems of town government. Similar to Hopis, Tohono O’odhams were also subjected to allotment (on the San Xavier del Bac Reservation) and boarding schools, and viewed as promising potential citizens by U.S. officials. But similar to New Mexico Pueblos, Hopis, and Yaquis, Tohono O’odams preferred to stay outside of mainstream electoral politics in favor of protecting their own national sovereignty.

scholarly journals Limited Occurrence of Denitrification in Four Shallow Aquifers in Agricultural Areas of the United States

2008 ◽  
Vol 37 (3) ◽  
pp. 994-1009 ◽  
Author(s):  
Christopher T. Green ◽  
Larry J. Puckett ◽  
John Karl Böhlke ◽  
Barbara A. Bekins ◽  
Steven P. Phillips ◽  
...  
Keyword(s):  
United States ◽  
The United States ◽  
Shallow Aquifers ◽  
Agricultural Areas

The Great Migrations and Black Urban Life in the United States, 1914–1970

2018 ◽  
Author(s):  
Tyina Steptoe
Keyword(s):  
United States ◽  
African Americans ◽  
20Th Century ◽  
Black People ◽  
Black Population ◽  
The United States ◽  
Urban Life ◽  
Urban Centers ◽  
Dramatic Shift ◽  
Agricultural Areas

During the 20th century, the black population of the United States transitioned from largely rural to mostly urban. In the early 1900s the majority of African Americans lived in rural, agricultural areas. Depictions of black people in popular culture often focused on pastoral settings, like the cotton fields of the rural South. But a dramatic shift occurred during the Great Migrations (1914–1930 and 1941–1970) when millions of rural black southerners relocated to US cities. Motivated by economic opportunities in urban industrial areas during World Wars I and II, African Americans opted to move to southern cities as well as to urban centers in the Northeast, Midwest, and West Coast. New communities emerged that contained black social and cultural institutions, and musical and literary expressions flourished. Black migrants who left the South exercised voting rights, sending the first black representatives to Congress in the 20th century. Migrants often referred to themselves as “New Negroes,” pointing to their social, political, and cultural achievements, as well as their use of armed self-defense during violent racial confrontations, as evidence of their new stance on race.

Detection of methane enhancements over the Eastern United States with improved TROPOMI retrievals

2020 ◽  
Author(s):  
Alba Lorente ◽  
Tobias Borsdorff ◽  
Joost aan de Brugh ◽  
Andre Butz ◽  
Mahesh Kumar Sha ◽  
...  
Keyword(s):  
United States ◽  
Atmospheric Chemistry ◽  
Mississippi River ◽  
Land Surface ◽  
Transport Model ◽  
The United States ◽  
Anthropogenic Sources ◽  
Eastern United States ◽  
Reference Measurements ◽  
Agricultural Areas

<p align="justify"><span>The TROPOspheric Monitoring Instrument (TROPOMI) aboard of the Sentinel 5 Precursor (S5P) has provided methane measurements for more than two years. The high accuracy together with the exceptional spatial resolution (7 x 7 km</span><sup><span>2</span></sup><span>, 7 x 5.2 km</span><sup><span>2 </span></sup><span>since August 2019) and temporal coverage (daily) of TROPOMI provides a unique perspective on local to regional methane enhancements. In this contribution, we discuss observations of enhanced methane concentrations over the United States. We analyse in detail temporal and spatial variability of methane over wetlands and agricultural areas along the Mississippi river and in Florida. To understand the observed CH4 anomalies regarding both natural and anthropogenic sources and transport at regional scales, we support our analysis with simulations from the GEOS-Chem atmospheric chemistry and transport model. We also investigate the possibility to use other datasets as a proxy for CH4 emissions (e.g. NO2 for agricultural areas, land surface temperature for wetlands). These results are based on an improved TROPOMI methane product that features among others a new bias correction that is fully independent of any reference measurements. The verification of the TROPOMI XCH4 data with ground-based measurements by the TCCON network yields a station-to-station variability of the XCH</span><sub><span>4</span></sub><span> error below 10 ppb, in agreement with the comparison with the proxy methane product from the Japanese GOSAT and GOSAT-2 missions. The improved TROPOMI methane product is planned as a future update of the operational TROPOMI processor.</span></p><p align="justify"> </p><p> </p>

scholarly journals Development and Field Evaluation of Multiple Virus-Resistant Bottle Gourd (Lagenaria siceraria)

Plant Disease ◽  
2013 ◽  
Vol 97 (8) ◽  
pp. 1057-1062 ◽  
Author(s):  
K.-S. Ling ◽  
A. Levi ◽  
S. Adkins ◽  
C. S. Kousik ◽  
G. Miller ◽  
...  
Keyword(s):  
South Carolina ◽  
Mosaic Virus ◽  
Broad Spectrum ◽  
Virus Resistance ◽  
Zucchini Yellow Mosaic Virus ◽  
The United States ◽  
Bottle Gourd ◽  
Yellow Mosaic Virus ◽  
Lagenaria Siceraria ◽  
Breeding Lines

In an effort to develop bottle gourd (Lagenaria siceraria) as a widely adapted rootstock for watermelon grafting, we sought to identify lines with broad resistance to several cucurbit viruses that are economically important in the United States. Preliminary analysis under greenhouse conditions indicated that the currently available commercial watermelon rootstocks were either highly susceptible or somewhat tolerant to one or more viruses. However, in greenhouse screening, several breeding lines of bottle gourd displayed broad-spectrum resistance to four viruses tested, including Zucchini yellow mosaic virus, Watermelon mosaic virus (WMV), Papaya ringspot virus watermelon strain (PRSV-W), and Squash vein yellowing virus. Resistance to PRSV-W and WMV was confirmed through field trials in two consecutive years at two different locations in South Carolina. Two breeding lines (USVL#1-8 and USVL#5-5) with broad-spectrum virus resistance could be useful materials for watermelon rootstock development.

Management of Mixed Hazardous and Radioactive Waste in the United States

2001 ◽  
Author(s):  
William Greenman ◽  
Kimberly Cole
Keyword(s):  
United States ◽  
Regulatory Authority ◽  
Nuclear Regulatory Commission ◽  
The United States ◽  
Slow Development ◽  
Treatment Facilities ◽  
Mixed Waste ◽  
Treatment And Disposal ◽  
Regulatory Commission ◽  
The U.S

Abstract In the United States, mixed-waste is typically defined as waste that contains both radioactive constituents and non-radioactive constituents that pose a threat to human health or the environment (hazardous waste). Prior to 1986 the U.S. Nuclear Regulatory Commission (NRC) had sole regulatory authority over mixed-waste because of its radioactive constituents. In 1986, however, the U.S. Environmental Protections Agency (EPA) was granted regulatory authority over the hazardous constituents in mixed-waste; and, a system of dual regulation was created. Dual regulation of mixed-waste by the EPA and the NRC has caused significant problems for the regulated community. The burden of dual regulation has contributed to the slow development of treatment technologies, and to the overall lack of treatment capacity available to U.S generators of mixed-waste. This paper reviews the requirements that the EPA and the NRC mandate with regard to mixed-waste generation, treatment and disposal; and it explores technical impacts of those requirements as they relate to generators, treatment facilities and the public.

scholarly journals Volutella leaf blight and stem canker on Japanese pachysandra in the Czech Republic

2008 ◽  
Vol 43 (No. 1) ◽  
pp. 10-12 ◽  
Author(s):  
I. Šafránková
Keyword(s):  
United States ◽  
Czech Republic ◽  
Stem Canker ◽  
The United States ◽  
Leaf Blight ◽  
The Czech Republic ◽  
Plant Parts ◽  
Leaf Spots ◽  
Stems And Leaves ◽  
Serious Disease

Woody ornamental cover plants of Japanese pachysandra (<i>P. terminalis</i> S. et Z.) are planted in parks and gardens in the Czech Republic. A serious disease of these plants is Volutella leaf blight and stem canker caused by the fungus <i>Pseudonectria pachysandricola</i> (anamorph <i>Volutella pachysandricola</i>). It was described by DODGE (1944) in the United States and appeared in Europe in the 1980s. Volutella pachysandricola was isolated from Japanese pachysandra (<i>P. terminalis</i> cvs. Green Carpet and Variegata) from leaf spots and stem and stolon cankers in Brno in 2000&minus;2003. The tan or brown spots with brown margins, often with concentric zones, develop on infected leaves. Stem and stolon cankers appear as water-soaked diseased areas, the stem often turns brown, shrivels and girdles. The infection often begins in damaged or senescent plant parts and spreads into the healthy tissues. Pink-orange sporodochia with spores form on newly killed stems and leaves during humid spring and summer periods. Ascospores develop in red-orange perithecia on the same tissues.

scholarly journals An Economic Evaluation of Soybean Stink Bug Control Alternatives for the Southeastern United States

1992 ◽  
Vol 24 (2) ◽  
pp. 83-94 ◽  
Author(s):  
David Chyen ◽  
Michael E. Wetzstein ◽  
Robert M. McPherson ◽  
William D. Givan
Keyword(s):  
United States ◽  
Experimental Data ◽  
Economic Evaluation ◽  
Methyl Parathion ◽  
Southeastern United States ◽  
The United States ◽  
Stink Bug ◽  
Growing Seasons ◽  
Lambda Cyhalothrin ◽  
Environmentally Sound

AbstractMethyl parathion or Penncap M (an encapsulated methyl parathion) are used extensively throughout the United States for controlling stink bug pests in soybeans, Glycine Max (L.) Merrill. However, this insecticide is highly toxic to mammals, birds, and non-target arthropods, and thus is less environmentally sound than other insecticides. For environmental and human health considerations, investigating alternative insecticides for control is desired. For this investigation, research based on field experimental data from Florida, Georgia, and Louisiana during the 1988 and 1989 growing seasons were employed. Results indicate that alternative, currently available, and less toxic insecticides may reduce producer costs, increase yield, and improve soybean quality. These alternative insecticides include Scout (tralomethrin), Karate (lambda-cyhalothrin), Orthene (acephate), and Baythroid (cyfluthrin). In terms of improved profits these alternative insecticides may dominate methyl parathion or encapsulated methyl parathion.

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