Stem Rust Infection and Development in Artificially Inoculated Fields of Wheat at Hays, Kansas, and Its Effect on Yield, 1960 to 1965

Stem Rust Infection and Development in Artificially Inoculated Fields of Wheat at Hays, Kansas, and Its Effect on Yield, 1960 to 1965
Author: Roland F. Line
Publisher:
Total Pages: 10
Release: 1968
Genre:
ISBN:

Most wheat varieties growing in the vicinity of Hays, Kansas, are susceptible to races of Puccinia graminis f. sp. tritici that are common in central United States. However, they are seldom severely damaged by stem rust. It is commonly thought that weather in that area is not favorable for establishment and development of stem rust. In 1960 to 1965 the epidemiology of stem rust was studied at Hays in fields of Cheyenne wheat inoculated with urediospores of race 56 when the plants were in tillering to boot stages of growth. Infection occurred in all 6 years. Rust increase was related to the frequency of days when conditions were favorable for infection. Plots with initial intensities of 2.5 to 20 pustules per 100 culms were compared. In the 6 consecutive years (1960 to 1965) severities at soft dough stage were about 30, 25, 7, 2, 2, and 20%; yields for rusted plots were 20, 19, 25, 34, 22, and 18 bu/acre; and yields for adjacent control areas were 46, 29, 45, 35, 29, and 62 bu/acre, respectively. In 1965, a natural epidemic of stem rust caused severe damage to wheat in Kansas and Nebraska. In 1965, the crop ripened late in the season. In 5 of the 6 years, weather was favorable for rust epidemics. Late natural infection appeared to be the primary factor limiting severity of the rust epidemics. (Author).

Stem Rust of Wheat

Stem Rust of Wheat
Author: Paul David Peterson
Publisher: American Phytopathological Society
Total Pages: 176
Release: 2001
Genre: Science
ISBN:

Wheat rust diseases have been among the most devastating of all plant diseases since biblical times. Now that nearly a half century has passed without a significant outbreak in the world's major wheat- producing regions, forward writer Nobel laureate Norman Borlaug cautions against complacency. Four contributed chapters examine how the science of plant pathology has responded to such challenges as stem rust of wheat epidemics in the North American Great Plains in the first half of the 20th century, and common barberry as an insidious spreader of black stem rust. Includes photos of plant pathologists and their research in the field (literally). c. Book News Inc.

Baseless

Baseless
Author: Nicholson Baker
Publisher: Penguin
Total Pages: 465
Release: 2021-07-20
Genre: Political Science
ISBN: 0735215766

“Staggeringly good.” —Counterpunch A major new work, a hybrid of history, journalism, and memoir, about the modern Freedom of Information Act—FOIA—and the horrifying, decades-old government misdeeds that it is unable to demystify, from one of America's most celebrated writers Eight years ago, while investigating the possibility that the United States had used biological weapons in the Korean War, Nicholson Baker requested a series of Air Force documents from the early 1950s under the provisions of the Freedom of Information Act. Years went by, and he got no response. Rather than wait forever, Baker set out to keep a personal journal of what it feels like to try to write about major historical events in a world of pervasive redactions, witheld records, and glacially slow governmental responses. The result is one of the most original and daring works of nonfiction in recent memory, a singular and mesmerizing narrative that tunnels into the history of some of the darkest and most shameful plans and projects of the CIA, the Air Force, and the presidencies of Harry Truman and Dwight Eisenhower. In his lucid and unassuming style, Baker assembles what he learns, piece by piece, about Project Baseless, a crash Pentagon program begun in the early fifties that aimed to achieve "an Air Force-wide combat capability in biological and chemical warfare at the earliest possible date." Along the way, he unearths stories of balloons carrying crop disease, leaflet bombs filled with feathers, suicidal scientists, leaky centrifuges, paranoid political-warfare tacticians, insane experiments on animals and humans, weaponized ticks, ferocious propaganda battles with China, and cover and deception plans meant to trick the Kremlin into ramping up its germ-warfare program. At the same time, Baker tells the stories of the heroic journalists and lawyers who have devoted their energies to wresting documentary evidence from government repositories, and he shares anecdotes from his daily life in Maine feeding his dogs and watching the morning light gather on the horizon. The result is an astonishing and utterly disarming story about waiting, bureaucracy, the horrors of war, and, above all, the cruel secrets that the United States government seems determined to keep forever from its citizens.

Rust Diseases of Wheat

Rust Diseases of Wheat
Author: Alan P. Roelfs
Publisher: CIMMYT
Total Pages: 92
Release: 1992
Genre: Technology & Engineering
ISBN: 9789686127478

The Wheat Stem Rust Epidemic of 1937 in Kansas (Classic Reprint)

The Wheat Stem Rust Epidemic of 1937 in Kansas (Classic Reprint)
Author: Charles Otis Johnston
Publisher: Forgotten Books
Total Pages: 28
Release: 2017-12-14
Genre: Business & Economics
ISBN: 9780332614113

Excerpt from The Wheat Stem Rust Epidemic of 1937 in Kansas Thus, while the rainfall iaay and June, 1937, was generally below that in 1935, Figure 1 shows that precipitation in some form occurred on all but 7 days of the critical infection-rust period of May 15 to June 15. During that period rain fell on 17 of the 32 days, and moisture in the form of n, mist, or dew occurred on 8 other days. Oh several occasions there were both dew and showers in single 24-hour periods. Except for June 12, on which a very strong wind blew from the south, there was some form of precipitation on each of the first 15 days, although the total for the period was only inches. Owing to the frequency of occurrence, moisture conditions seemed'to be nearly ideal for stem-rust infection at Manhattan. Similar conditions throughout the eastern two-thirds of the State were reported in Climatological Data of the U; S. Weather Bureau. However, in the southeastern part, where the heaviest stemerust infection occurred, there was considerably more rain than in other parts of Kansas, and, during the period June 8 to 15, inclusive, many fields were water logged. Moreover, because of favorable growing conditions in that sec tion, growth.of wheat was very rank and there was much.1odging. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.