Thomas K. Pavlychenko: Pioneer Weed Experimentalist

Weed Science ◽  
1982 ◽  
Vol 30 (4) ◽  
pp. 434-440
Author(s):  
Carol J. Bubar ◽  
Ian N. Morrison
Keyword(s):  
Plant Species ◽  
Chemical Control ◽  
Plant Competition ◽  
Root Systems ◽  
Weed Science ◽  
Weed Biology ◽  
Classical Studies ◽  
Crop Ecology ◽  
The University

Thomas Karp Pavlychenko's pioneering investigations on the root systems of crops and weeds and the results of his research on weed biology and ecology at the University of Saskatchewan in the 1930's and 1940's provided the foundation for many of the principles of modern weed science. His classical studies in which he quantified the distribution and length of roots of many plant species continue to be regarded as being of unsurpassed caliber. In addition to his work in the areas of crop ecology and plant competition, Pavlychenko is also noted for his many contributions relating to the cultural and chemical control of weeds. In this paper, a brief chronicle of Pavlychenko's life and major accomplishments during his remarkable career at the University of Saskatchewan and later with the American Chemical and Paint Company is presented.

The Identification and Utilization of Weed Biology Information

Weed Science ◽  
1976 ◽  
Vol 24 (3) ◽  
pp. 282-287 ◽  
Author(s):  
S.J. Parka
Keyword(s):  
Weed Control ◽  
Chemical Control ◽  
Growth And Development ◽  
Research Data ◽  
Weed Science ◽  
Weed Biology ◽  
Weed Growth ◽  
The Subject

The divisions and subjects of weed biology were identified. Twenty-eight representatives from the herbicide industry ranked the priority of the identified subjects. They also gave their thoughts and impressions on specific questions dealing with weed biology. The divisions which received a moderate to high priority rating are: Identification and Classification of Weeds, Harmful Aspects of Weeds, Weed Growth and Development, and Weed Control. A review of the papers published inWeed Scienceindicates an increase in the number of papers being published on the subject of weed biology and a decrease in the number of papers dealing with chemical control. The proceedings of the regional weed societies in the U.S.A. had a high percent of the papers devoted to chemical control, with the lowest percentage devoted to weed biology. Comments are made as to why weed biology is important and how research data on weed biology would be used by industry. A comparison of the rating that industry assigned to the various subjects of weed biology to the amount of published literature indicates insufficient work has been done in many areas. It also appears that there is an imbalance in research. More work is being done on certain subjects that industry considers of lesser value than subjects of greater importance.

scholarly journals Phytosociological surveys: tools for weed science?

2013 ◽  
Vol 31 (2) ◽  
pp. 469-482 ◽  
Author(s):  
G. Concenço ◽  
M. Tomazi ◽  
I.V.T. Correia ◽  
S.A. Santos ◽  
L. Galon
Keyword(s):  
Cluster Analysis ◽  
Plant Species ◽  
Plant Community ◽  
Plant Communities ◽  
Distinct Group ◽  
Weed Science ◽  
Comprehensive Overview ◽  
Ecological Evaluation ◽  
Natural Plant ◽  
Ecological Basis

In simple terms, a phytosociological survey is a group of ecological evaluation methods whose aim is to provide a comprehensive overview of both the composition and distribution of plant species in a given plant community. To understand the applicability of phytosociological surveys for weed science, as well as their validity, their ecological basis should be understood and the most suitable ones need to be chosen, because cultivated fields present a relatively distinct group of selecting factors when compared to natural plant communities. For weed science, the following sequence of steps is proposed as the most suitable: (1) overall infestation; (2) phytosociological tables/graphs; (3) intra-characterization by diversity; (4) inter-characterization and grouping by cluster analysis. A summary of methods is established in order to assist Weed Science researchers through their steps into the realm of phytosociology.

Weeds, Crops, and Herbicides: A Modern-Day “Neckriddle”

1992 ◽  
Vol 6 (4) ◽  
pp. 788-795 ◽  
Author(s):  
Steven R. Radosevich ◽  
Claudio M. Ghersa
Keyword(s):  
Environmental Economic ◽  
Weed Control ◽  
Weed Science ◽  
Weed Biology ◽  
Holistic Approaches ◽  
Agricultural Community ◽  
Traditional Research ◽  
Social Components ◽  
Insight Into

The agricultural community is currently involved in a debate with other members of society concerning many of the tools and tactics used to grow food. The discipline of weed science represents a microcosm of this larger societal debate, and thus is indicative of many other applied agricultural disciplines. Weed science comprises six fundamental disciplines, which have been arranged to depict its three major areas of research: weed technology, weed biology, and the ethics of weed control. Insight into those components of the debate that involve weed science is gained by examining each area. It seems unlikely that solutions to the “neckriddle” can be found through traditional research because of the integrative nature of agriculture, which involves environmental, economic, and social components. It is hoped that movement toward more holistic approaches to research will lead to resolution of the debate between society and the agricultural community.

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