J. C. Campbell

Effect of tetrachloronitrobenzene (fusarex) on emergence and yield of potatoes. Part III. — Northeast

SummarySeed potatoes of the Katahdin, Kennebec, and Pungo varieties were treated with Fusarex dust containing 6% tetrachloronitrobenzene at three dates in Maine during 1961–62 storage season. In 1962, these chemically treated seed potatoes were planted in uniform tests and compared with seed stocks that had been desprouted once and also with untreated seed tubers. Cooperators in Maine, Long Island, and New Jersey, Pennsylvania, and New Brunswick, Canada recorded plant emergence and yield data at each location.Treatment of seed potatoes with Fusarex delayed initial plant emergence of all varieties at all locations except in Maine and Canada where Fusarex treatment increased emergence of the Pungo variety as compared to untreated seed. Total emergence varied by variety and location.Date of seed treatment with Fusarex did not affect emergence significantly. Emergence of desprouted seed tubers was not significantly lower than untreated or chemically treated seed at most locations.Treatment of seed with Fusarex decreased yields of tubers in Pennsylvania and on Long Island. At all other locations yields were slightly better when seed had been treated with Fusarex. No significant statistical differences in yields occurred between treatments at any of the five test locations when varieties and locations were aceraged.ResumenSemillas de papas de las variedades Katahdin, Kennebec y Pungo fueron tratadas en tres diferentes fechas con polvo “Fusarex” al 6% del producto ativo, tetraclorobenceno, durante la estación de almacenamiento. (1961–62) en Maine.En 1962, las semillas fueron plantadas en pruebas uniformes y comparadas e ntre las que recebieron tratamiento quimico. Las que no recebieron y entre semillas almacenadas que tenian sido deshijadas una vez. Cooperativistas en Maine, Long Island, New Jersey, Pennsylvania y New Brunswick, Canada, reuniron dados sobre la germinación y rendimiento de las plantas en cada localidad.El tratamiento de las semillas con “Fusarex” retardó la germinación de todas las variedades, y en todas las localidades, excepto en Maine y en Canada. En donde el tratamiento con “Fusarex” estimuló de germinación de la variedad Pungo, cuando esta fué comparada con semillas no tratadas. Las fechas de los tratamientos de las semillas con “Fusarex” no afectaron significativamente la germinación.En la mayoria de las localidades la germinación de las semillas deshijadas no fué significativamente más baja que la de las semillas no tratadas, o en las tratadas quimicamente.El tratamiento quimico de las semillas con “Fusarex” reducció la cosecha en Pennsylvania y en Long Island.En todas las otras localidades las cosechas fueron ligeramente superiores, cuando las semillas habian sido tratadas con “Fusarex.” En minguna de las localidades, las cosechas obtenidas en los diferentes tratamientos estudiados, fueroo estadisticamente siguificativos, cuando variedades y localidades fueron comparadas.

Raritan, a potato with high specific gravity

Raritan (F5459) is a new netted potato variety named and released by Rutgers University. It is the progeny of a cross made within the Potato Breeding Program of the Canada Department of Agriculture, and later released to Rutgers University for development and introduction. Raritan is unique in its ability to produce tubers of high specific gravity under the relatively high temperatures prevailing in New Jersey. Its baking, mashing, and french frying qualities have been good in most trials.Resumen“Raritan” (F 5459) es una nueva variedad de papa con piel reticulada nombradoe introducido por la Universidad de Rutgers. Es la progenie de un cruce hecho en el Programa de Mejoramiento de Papa del Deparamento de Agricultura del Canadá, dado mas tarde a la Universidad de Rutgers para su desarollo e introdución. “Raritan” es sobresaliente en su habilidad de producir tubérculos de alto peso específico bajo las attas temepraturas prevalecientes en New Jersey. Su calidad ser cocido en horno, para hacer pure, o papas fritas al estilo Francés (French fries) ha sido buenos in la mayoría de los ensayos.

Abstracts of papers presented at the Fifty-Second Annual Meeting of The Potato Association of America

F I F T Y S E C O N D A N N U A L M E E T I N G

Proceedings of the Fourth Triennial Conference of the European Association for Potato Research, 1970

B o o k REVIEW: Proceedings of the Fourth Triennial Conference of the European Association for Potato Research, 1970, Service des publications, Route de Saint-Syr 78-Versailles, France, 298 pages, Price 48, 37 F The book contains the complete text or abstracts of the more than 100 papers that were presented at this conference by scientists from all over the world. The subjects discussed include 2 papers on potato production in France, 3 papers on blackspot, 1 on germplasm banks of the Americas, 6 papers on agronomic aspects, 8 papers on varieties, 10 papers on physiology as related to production and 11 papers on the physiology of the tuber; also, on pathology and related problems 17 papers, on virology 12 papers, on engineering problems 8 papers and on utilization 9 papers. There are numerous tables and graphs to help the reader visualize the results of the research presented. Many papers are accompanied by extensive bibliographies giving the reader a list of many other articles on the various problems discussed. There is also a listing of all of the participants with their addresses which should prove of value to persons wanting to write to the participants about their paeprs. This book will prove to be of value to anyone working on problems of potatoes dealing with the above mentioned topics.