scholarly journals Low Temperature Is Critical for Jujube Grafting Success in Frost-prone Northern New Mexico

2022 ◽  
Vol 32 (1) ◽  
pp. 28-31
Author(s):  
Shengrui Yao
Keyword(s):  
United States ◽  
New Mexico ◽  
Low Temperatures ◽  
Shoot Growth ◽  
Critical Role ◽  
The United States ◽  
Climate Factors ◽  
Small Plant ◽  
Grafting Technique ◽  
Ziziphus Jujuba

The increased popularity of jujube (Ziziphus jujuba) combined with the difficulty of grafting have limited supplies of grafted trees in the United States. From 2011 to 2020, grafting was practiced for cultivar amplification after importation and cultivar trials in frost-prone northern New Mexico. Grafting success was related to not only grafting techniques but also climate factors. Bark grafting, whip/tongue grafting, and cleft grafting were commonly used in nurseries. Low temperatures had a critical role in jujube grafting success in marginal regions and were more important than the grafting technique. If frost occurs before or near the leafing time, then grafting should be delayed until the rootstocks are determined to be healthy and alive. If frost occurs after grafting, then grafting failure and/or thin and small plant percentages increased. If only branchlets appear after grafting, then pinching branchlets could stimulate new shoot growth.

Building America

2019 ◽  
Author(s):  
Jean H. Baker
Keyword(s):  
United States ◽  
Early Republic ◽  
Critical Role ◽  
Water System ◽  
The United States ◽  
Primary Sources ◽  
Early American ◽  
Transatlantic Exchange ◽  
The Us ◽  
Private Homes

Building America: The Life of Benjamin Henry Latrobe is a biography of America’s first professionally trained architect and engineer. Born in 1764, Latrobe was raised in Moravian communities in England and Germany. His parents expected him to follow his father and brother into the ministry, but he rebelled against the church. Moved to London, he studied architecture and engineering. In 1795 he emigrated to the United States and became part of the period’s Transatlantic Exchange. Latrobe soon was famous for his neoclassical architecture, designing important buildings, including the US Capitol and Baltimore Basilica as well as private homes. Carpenters and millwrights who built structures more cheaply and less permanently than Latrobe challenged his efforts to establish architecture as a profession. Rarely during his twenty-five years in the United States was he financially secure, and when he was, he speculated on risky ventures that lost money. He declared bankruptcy in 1817 and moved to New Orleans, the sixth American city that he lived in, hoping to recoup his finances by installing a municipal water system. He died there of yellow fever in 1820. The themes that emerge in this biography are the critical role Latrobe played in the culture of the early republic through his buildings and his genius in neoclassical design. Like the nation’s political founders, Latrobe was committed to creating an exceptional nation, expressed in his case by buildings and internal improvements. Additionally, given the extensive primary sources available for this biography, an examination of his life reveals early American attitudes toward class, family, and religion.

Confronting Soviet Power: U.S. Policy during the Early Cold War

2012 ◽  
Vol 36 (4) ◽  
pp. 151-188 ◽  
Author(s):  
Paul C. Avey
Keyword(s):  
United States ◽  
Cold War ◽  
Soviet Union ◽  
Critical Role ◽  
Balance Of Power ◽  
The United States ◽  
Soviet Power ◽  
The Soviet Union ◽  
Foreign Policies ◽  
Distribution Of Power

Many self-identified realist, liberal, and constructivist scholars contend that ideology played a critical role in generating and shaping the United States' decision to confront the Soviet Union in the early Cold War. A close look at the history reveals that these ideological arguments fail to explain key aspects of U.S. policy. Contrary to ideological explanations, the United States initially sought to cooperate with the Soviet Union, did not initially pressure communist groups outside the Soviet orbit, and later sought to engage communist groups that promised to undermine Soviet power. The U.S. decision to confront the Soviets stemmed instead from the distribution of power. U.S. policy shifted toward a confrontational approach as the balance of power in Eurasia tilted in favor of the Soviet Union. In addition, U.S. leaders tended to think and act in a manner consistent with balance of power logic. The primacy of power over ideology in U.S. policymaking—given the strong liberal tradition in the United States and the large differences between U.S. and Soviet ideology—suggests that relative power concerns are the most important factors in generating and shaping confrontational foreign policies.

Territorial and Early Statehood Periods

2017 ◽  
Author(s):  
Teresita Majewski ◽  
Lauren E. Jelinek
Keyword(s):  
United States ◽  
New Mexico ◽  
The United States ◽  
American Southwest ◽  
Subsequent Work ◽  
Cultural Heterogeneity ◽  
Terra Incognita ◽  
Formative Time ◽  
The 1960S ◽  
Historical Trajectory

The archaeology of the territorial and early statehood periods (1850–1917) in the American Southwest was virtually terra incognita until the advent of government-mandated archaeology in the 1960s. Subsequent work has shown that historical archaeology has much to contribute to a fuller understanding of this dynamic and formative time in U.S. history. Historical-archaeological investigations have demonstrated that although the United States formally exerted control over Arizona, Colorado, and New Mexico by the last half of the nineteenth century, the interactions among its Indigenous, Spanish, and Mexican inhabitants strongly influenced the territory’s historical trajectory into the nineteenth and early twentieth centuries. This chapter provides a historic context and a selective overview of archaeological studies that relate to the key themes of shifting economies and cultural heterogeneity.

scholarly journals Jujube Phenology, Pollen Germination, and Two Unique Germplasm Resources in New Mexico

HortScience ◽  
2018 ◽  
Vol 53 (1) ◽  
pp. 23-27 ◽  
Author(s):  
Shengrui Yao
Keyword(s):  
United States ◽  
New Mexico ◽  
Pollen Germination ◽  
Germination Rate ◽  
The United States ◽  
Germplasm Resources ◽  
Male Sterile ◽  
Science Center ◽  
Genomic Study ◽  
Wide Range

Jujube (Ziziphus jujuba Mill.) originated in China and grows well in a wide range of areas in the United States, especially the southwest. New Mexico State University’s Sustainable Agriculture Science Center has imported and collected over 50 jujube cultivars and conducted a series of jujube-related research projects. In this study, jujube phenology and pollen germination in New Mexico were investigated and two unique germplasm resources were reported. Jujubes leafed out 4–8 weeks later than most pome and stone fruits and bloomed 2–3 months later than apricots, peaches, and apples. It can avoid late frosts in most years in northern New Mexico and, thus, produce a crop more reliably than traditional fruit crops in the region. For the 48 cultivars tested for pollen germination, the germination rates ranged from 0% to 75% depending on the cultivar and year. ‘September Late’ had the highest pollen germination rate each year among all cultivars tested from 2012 to 2014, whereas ‘GA866’, ‘Maya’, and ‘Sherwood’ had the lowest. ‘Zaocuiwang’ was the first reported male-sterile jujube cultivar in the United States, and this character was consistent from year to year and, thus, it would be a valuable cultivar for jujube breeding. Cultivar Yu had pseudo-flowers which never bloomed or set fruit. It would be a useful germplasm as special landscape trees or for genomic study of jujube flowering-related genes.

Burden-sharing: the US, Australia and New Zealand alliances in the Pacific islands

2021 ◽  
Author(s):  
Joanne Wallis ◽  
Anna Powles
Keyword(s):  
United States ◽  
New Zealand ◽  
Pacific Islands ◽  
Critical Role ◽  
The United States ◽  
Burden Sharing ◽  
Military Capability ◽  
The Pacific ◽  
Security Challenges ◽  
The Us

Abstract One of President Joseph Biden's foreign policy priorities is to ‘renew’ and ‘strengthen’ the United States' alliances, as they were perceived to have been ‘undermined’ during the Trump administration, which regularly expressed concern that allies were free-riding on the United States' military capability. Yet the broad range of threats states face in the contemporary context suggests that security assistance from allies no longer only—or even primarily—comes in the form of military capability. We consider whether there is a need to rethink understandings of how alliance relationships are managed, particularly how the goals—or strategic burdens—of alliances are understood, how allies contribute to those burdens, and how influence is exercised within alliances. We do this by analysing how the United States–Australia and Australia–New Zealand alliances operate in the Pacific islands. Our focus on the Pacific islands reflects the United States' perception that the region plays a ‘critical’ role in helping to ‘preserve a free and open Indo-Pacific region’. We conclude that these understandings need to be rethought, particularly in the Pacific islands, where meeting non-traditional security challenges such as economic, social and environmental issues, is important to advancing the United States, Australia and New Zealand's shared strategic goal of remaining the region's primary security partners and ensuring that no power hostile to their interests establishes a strategic foothold.

Sign in / Sign up

Export Citation Format

Share Document