scholarly journals TEMPERATURE REGIMES UNDER ROW COVERS IN OVERWINTER ONION TRANSPLANT PRODUCTION

HortScience ◽  
1990 ◽  
Vol 25 (8) ◽  
pp. 858h-858
Author(s):  
David A. Bender
Keyword(s):  
New Mexico ◽  
Soil Surface ◽  
Plant Size ◽  
The Other ◽  
Bare Ground ◽  
Onion Plant ◽  
Heat Unit ◽  
Row Covers ◽  
West Texas ◽  
Temperature Regimes

Two cultivars of onions, `New Mexico Yellow Grano' and `Midstar' were seeded in single bed plots in mid-October 1985 and 1987 for overwinter transplant production. Plots were covered with spunbonded polyester (POL) or tunnels of clear polyethylene (CLR) or microperforated polyethylene (PER) (1985 only) in early November and compared to uncovered controls. Temperatures were monitored 5 cm above the soil surface under the covers in each plot with three parallel-wired thermocouples. Heat unit (HU) accumulation (number of degrees by which the daily mean temp exceeded 0°C) was recorded for each plot and compared with onion plant size. HU accumulation by mid-February 1986 under CLR, POL and PER was 139%, 131% and 113%, respectively, of that over bare ground. In mid-March 1988 cumulative HU under CLR and POL were 192% and 125% of those over bare ground. Plant diameter varied with variety but increased linearly with cumulative HU for all varieties. `New Mexico Yellow Grano' reached the minimum 4 mm size for transplanting at about 1800 HU while `Midstar' required only 1500 HU. CLR produced useable transplants by early March and the other covers by late March. Numbers of useable transplants per meter of bed in mid-March ranged from 3-6 in uncovered plots to 102-153 under PER tunnels, 185-203 under POL and 263-301 under CLR tunnels. CLR tunnels appear to provide sufficient HU accumulation to produce onion plants for transplanting in early March in West Texas.

scholarly journals TEMPERATURE REGIMES UNDER ROW COVERS IN OVERWINTER ONION TRANSPLANT PRODUCTION

HortScience ◽  
1990 ◽  
Vol 25 (8) ◽  
pp. 858H-858
Author(s):  
David A. Bender
Keyword(s):  
New Mexico ◽  
Soil Surface ◽  
Plant Size ◽  
The Other ◽  
Bare Ground ◽  
Onion Plant ◽  
Heat Unit ◽  
Row Covers ◽  
West Texas ◽  
Temperature Regimes

Two cultivars of onions, `New Mexico Yellow Grano' and `Midstar' were seeded in single bed plots in mid-October 1985 and 1987 for overwinter transplant production. Plots were covered with spunbonded polyester (POL) or tunnels of clear polyethylene (CLR) or microperforated polyethylene (PER) (1985 only) in early November and compared to uncovered controls. Temperatures were monitored 5 cm above the soil surface under the covers in each plot with three parallel-wired thermocouples. Heat unit (HU) accumulation (number of degrees by which the daily mean temp exceeded 0°C) was recorded for each plot and compared with onion plant size. HU accumulation by mid-February 1986 under CLR, POL and PER was 139%, 131% and 113%, respectively, of that over bare ground. In mid-March 1988 cumulative HU under CLR and POL were 192% and 125% of those over bare ground. Plant diameter varied with variety but increased linearly with cumulative HU for all varieties. `New Mexico Yellow Grano' reached the minimum 4 mm size for transplanting at about 1800 HU while `Midstar' required only 1500 HU. CLR produced useable transplants by early March and the other covers by late March. Numbers of useable transplants per meter of bed in mid-March ranged from 3-6 in uncovered plots to 102-153 under PER tunnels, 185-203 under POL and 263-301 under CLR tunnels. CLR tunnels appear to provide sufficient HU accumulation to produce onion plants for transplanting in early March in West Texas.

Taxonomy and variability of three Texigryphaea (Bivalvia) species from their Lower Cretaceous (Albian) type localities in New Mexico and Oklahoma

1989 ◽  
Vol 63 (4) ◽  
pp. 454-483 ◽  
Author(s):  
Barry S. Kues
Keyword(s):  
New Mexico ◽  
Local Variation ◽  
Morphological Characters ◽  
The Other ◽  
Ontogenetic Changes ◽  
Free Living ◽  
Marine Communities ◽  
West Texas ◽  
Turbulence Length ◽  
Group Species

The benthic, free-living oyster Texigryphaea was the dominant constituent of many late Albian marine communities in the Texas and southern Western Interior regions. Large topotypic assemblages of three common lower–middle Washita Group species (T. navia and T. pitcheri in Oklahoma and T. tucumcarii in New Mexico) each display considerable morphological variation in valve shape and the proportions and expression of various features. Variation within an assemblage is partly due to ontogenetic changes but is mainly ecophenotypic, with local variation in nature of substrate, water turbulence, length of attachment time, and other factors influencing the final morphology of the mature shell. The T. navia assemblage is distinct in several important morphological characters from the other species, and the differences become more pronounced with growth. Texigryphaea navia appears to have been adapted to relatively firm substrates in moderately agitated conditions, in contrast to the other species, which occupied softer substrates in quieter environments. The essentially contemporaneous T. pitcheri and T. tucumcarii assemblages display much overlap in all measured dimensions of the left valve and in the range of intergrading morphs that compose each assemblage. Accordingly, T. tucumcarii is considered a synonym of T. pitcheri, representing populations of that species that lived in the West Texas-New Mexico area and developed only minor differences from the eastern populations. Within the T. navia topotypic assemblage are specimens intermediate between T. navia and T. pitcheri, and the eastern and western T. pitcheri assemblages contain forms apparently transitional to two other species, T. washitaensis and T. belviderensis. Ecophenotypic variation in the T. pitcheri assemblages appears to be greater than that in European Jurassic Gryphaea species and mirrors to some extent phyletic variation in European Jurassic Gryphaea lineages.

scholarly journals EDS Containment Vessel Explosive Test and Analysis

2016 ◽  
Author(s):  
Robert W. Crocker ◽  
Brent L. Haroldsen ◽  
Jerome H. Stofleth ◽  
Mien Yip
Keyword(s):  
New Mexico ◽  
Pressure Vessel ◽  
The Other ◽  
Containment Vessel ◽  
Tnt Equivalent ◽  
Vessel Response

This report documents the results of two of tests that were performed on an explosive containment vessel at Sandia National Laboratories in Albuquerque, New Mexico in July 2013 to provide some deeper understanding of the effects of charge geometry on the vessel response [1]. The vessel was fabricated under Code Case 2564 of the ASME Boiler and Pressure Vessel Code, which provides rules for the design of impulsively loaded vessels [2]. The explosive rating for the vessel, based on the Code Case, is nine (9) pounds TNT-equivalent. One explosive test consisted of a single, centrally located, 7.2 pound bare charge of Composition C-4 (equivalent to 9 pounds TNT). The other test used six each 1.2 pound charges of Composition C-4 (7.2 pounds total) distributed in two bays of three.

NOTES ON NEW MEXICO BEES

1900 ◽  
Vol 32 (12) ◽  
pp. 361-364
Author(s):  
T. D. A. Cockerell
Keyword(s):  
New Mexico ◽  
Hind Tibia ◽  
The Other ◽  
The Third ◽  
Central Depression ◽  
The Face

Bombomelecta larreœ, n. sp.♀.—Length 12½ mm.; general build and structure of B. thoracica, but the scutellum is convex with a central depression, and wholly without spines; while the claws have the inner division short and broadly truncate. The maxillary palpi are 6-jointed, and the mandibles have a strong tooth on the inner side. Black; pubescence of the face and vertex pale brown; of the occiput, labrum and clypeus, black; of the pleura, metathorax and scutellum, black; of the post-scurtellum, yellowish, especially noticeable at the sides; of the mesothorax, orange-fulvous, short, dense and conspicuous in front, thin behind. Abdomen with broad but inconspicuous ochreous bands on segments 2 to 4, more or less interrupted in the middle on 2 and 4, represented on the first segment by lateral patches, and a few ochreous hairs even in the middle; fifth segment with black hairs. Antennæ entirely black, apex truncate, the corners of the truncation rounded. Legs black, with black pubescence; spurs black, hind spur of hind tibia larger than the other, and somewhat bent. Wings dark fuliginous, with hyaline patches on the third transverso-cubital and second recurrent nervures; venation resembling that of B. thoracica, var. fulvida, except that the first recurrent nervure joins the second submarginal cell almost at its apex.

Guadalupe Mountains, West Texas and New Mexico: Key excursions

AAPG Bulletin ◽  
2017 ◽  
Vol 101 (04) ◽  
pp. 465-474 ◽  
Author(s):  
Charles Kerans ◽  
Chris Zahm ◽  
Beatriz Garcia-Fresca ◽  
Paul (Mitch) Harris
Keyword(s):  
New Mexico ◽  
West Texas
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