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.

Modeling the Biology of Weeds for Integrated Weed Management

Weed Science ◽  
1982 ◽  
Vol 30 (S1) ◽  
pp. 13-16 ◽  
Author(s):  
Marvin M. Schreiber
Keyword(s):  
Annual Meeting ◽  
Weed Management ◽  
Growth And Development ◽  
Integrated Weed Management ◽  
Steady Increase ◽  
Weed Science ◽  
Weed Biology ◽  
Effect Data ◽  
Weed Growth ◽  
Special Symposium

In a special symposium on weed biology presented at the 1975 annual meeting of the Weed Science Society of America, Parka (37) reviewed the trend of published papers in WEED SCIENCE related to weed biology over the 20-yr period, 1952 to 1972. His data indicated a steady increase from 9.2 to 17.2% of published papers directly related to weed growth and development. My recent assessment of similarly classified papers in 1978, 1979, and 1980 showed a remarkable increase to 21.9, 24.3, and 27.2%, respectively. Further, the more recent papers on weed growth and development also include crop-effect data, i.e., the association of weed growth with crop competition.

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.

scholarly journals DAMPAK PERCERAIAN TERHADAP PERILAKU ANAK DAN HASIL BELAJAR

2019 ◽  
Vol 5 (1) ◽  
pp. 1-18
Author(s):  
Fatkhu Yasik ◽  
Dewi Anggraeni ◽  
Aulia Sahnaz
Keyword(s):  
Learning Outcomes ◽  
Growth And Development ◽  
Negative Impact ◽  
Research Data ◽  
Emotional Expressions ◽  
Negative Effects ◽  
Children's Behavior ◽  
The Subject ◽  
The Impact ◽  
Collection Methods

This study aims to examine the impact of divorce: (1) knowing the existence of a divorce factor. (2) how the impact of divorce on children's behavior. (3) what is the impact of divorce on children's learning outcomes. This study uses qualitative research. The subject of this study was MI Al Khairiyah students in Duri Kosambi Cengkareng, West Jakarta who were victims of their parents' divorce. Data collection methods used in this study are interviews, data analysis includes data reduction and coding. Validation of research data uses tringgulation where researchers conduct interviews with some of the subjects to analyze their validity with other supporters. The results of this study indicate that the impact of parental divorce on children's behavior and learning outcomes can have a negative impact. Many negative effects are expressed by emotional expressions that make the child, easily sad, irritable, naughty and sometimes become quiet and inferior to his friends whose parents are not divorced. So that there is no motivation for active learning and achievement in the class because there is no support and attention of both parents for children excited in the process of learning and growth and development

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.

Concerns a Weed Scientist Might Have About Herbicide-Tolerant Crops

1992 ◽  
Vol 6 (3) ◽  
pp. 635-639 ◽  
Author(s):  
Steven R. Radosevich ◽  
Claudio M. Ghersa ◽  
Gary Comstock
Keyword(s):  
Population Dynamics ◽  
Weed Control ◽  
Herbicide Tolerance ◽  
Social Consequences ◽  
Weed Science ◽  
Plant Populations ◽  
Weed Biology ◽  
Herbicide Tolerant ◽  
Potential Benefits ◽  
Recent Refinement

There are three primary activities that characterize the discipline of Weed Science. These activities are weed technology, weed biology, and the ethics of weed control. Each of these activities needs to be considered as herbicide-tolerant crops (HTCs) are introduced. HTCs are the most recent refinement in the existing technology to control weeds. The potential benefits from the improved weed control must be weighed against possible increased costs of production and potential for genes that control herbicide tolerance to escape into non-tolerant plant populations. These questions about herbicide resistance are primarily technological and biological. They demonstrate the paucity of information in Weed Science on weed genetics, gene flow, fitness, and other aspects of weed-crop population dynamics. Other questions about HTCs are ethical. They require that we ask who benefits from the technology and what are the economic, ecological, and social consequences of it.

scholarly journals The chemical control of weeds on sugar-cane estates of Java.

1960 ◽  
Vol 8 (1) ◽  
pp. 34-38
Author(s):  
J. Ruinard
Keyword(s):  
Adverse Effect ◽  
Weed Control ◽  
Ammonium Salt ◽  
Sugar Cane ◽  
Chemical Control ◽  
Large Scale ◽  
Harmful Effect ◽  
Surface Application ◽  
Weed Growth

The application of herbicides after the planting furrows had been made but immediately before planting did not give satisfactory weed control and had a harmful effect on the cane. The most satisfactory weed control was obtained by a surface application, immediately before furrowing, of a mixture of 20 kg. TCA and 2 kg. of the ammonium salt of 2, 4-D per ha. This treatment prevented weed growth for up to 8 weeks and had no adverse effect on cane growth. It is recommended that the cane should be planted as soon as possible after treatment. A machine designed for the large-scale application of herbicides is described. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals ELLIPSIS OF DISCOURSE ABOUT COVID-19 IN THE KOMPAS NEWSPAPER OPINION COLUMN

2020 ◽  
Vol 12 (2) ◽  
pp. 152-163
Author(s):  
Bonefasius Rampung ◽  
Antonius Nesi ◽  
Petrus Sii
Keyword(s):  
Data Analysis ◽  
Data Collection ◽  
Research Data ◽  
Note Taking ◽  
Virus Diseases ◽  
The Subject

This study aims to describe the ellipsis construction or removal of language elements in the discourse about corana virus diseases (Covid-19) in the Kompas newspaper opinion column. The discourses analyzed were sourced from Kompas opinions published from March to April 2020. The method used in data collection was the refer to method (read), which was applied through the note taking technique. The stages of data collection in this study, namely the inventory, identification and classification of data. The method of data analysis in this study is the agih method, which is applied with the technique of fade and replace for direct elements. Stages of data analysis in this study, namely reduction, interpretation, presentation, and discussion of the results of data analysis. The results of this research data analysis show that the ellipsis construction in the discourse about Covid-19 in the Kompas newspaper opinion column consists of the subject ellipsis, the subject ellipsis as well as the predicate, and the object ellipsis in equivalent (coordinative) compound sentences. Meanwhile, the ellipsis compound compound (subordinate) occurs in the function of the subject, both in the child clause (clause) and in the parent clause (parent sentence). Both in equivalent compound sentences and in multilevel compound sentences, the elements in each function are written in words both cataphoric and anaphoric.

Weed Management in Small Grains Harvested for Grain

EDIS ◽  
2020 ◽  
Vol 2020 (3) ◽  
Author(s):  
Jason Ferrell ◽  
Gregory MacDonald ◽  
Pratap Devkota
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Chemical Control ◽  
Management Practices ◽  
Good Management ◽  
Small Grains ◽  
Crop Competition

Successful weed control in small grains involves using good management practices in all phases of production. In Florida, winter weeds compete with small grains for moisture, nutrients, and light, with the greatest amount of competition occurring during the first six to eight weeks after planting. Weeds also cause harvest problems the following spring when the small grain is mature. This 4-page publication discusses crop competition, knowing your weeds, and chemical control. Written by J. A. Ferrell, G. E. MacDonald, and P. Devkota, and published by the UF/IFAS Agronomy Department, revised May 2020.

СОЦИАЛЬНАЯ КОНФЛИКТОЛОГИЯ: ТЕОРЕТИКО-ИСТОРИЧЕСКИЙ АСПЕКТ

2020 ◽  
Vol 15 (2) ◽  
pp. 68
Author(s):  
А. Н. Сухов
Keyword(s):  
Theory And Practice ◽  
Important Task ◽  
Social Conflicts ◽  
Psychological Approach ◽  
Structure Dynamics ◽  
History Of ◽  
The Subject ◽  
First Time

This given article reveals the topicality not only of destructive, but also of constructive, as well as hybrid conflicts. Practically it has been done for the first time. It also describes the history of the formation of both foreign and domestic social conflictology. At the same time, the chronology of the development of the latter is restored and presented objectively, in full, taking into account the contribution of those researchers who actually stood at its origins. The article deals with the essence of the socio-psychological approach to understanding conflicts. The subject of social conflictology includes the regularities of their occurrence and manifestation at various levels, spheres and conditions, including normal, complicated and extreme ones. Social conflictology includes the theory and practice of diagnosing, resolving, and resolving social conflicts. It analyzes the difficulties that occur in defining the concept, structure, dynamics, and classification of social conflicts. Therefore, it is no accident that the most important task is to create a full-fledged theory of social conflicts. Without this, it is impossible to talk about effective settlement and resolution of social conflicts. Social conflictology is an integral part of conflictology. There is still a lot of work to be done, both in theory and in application, for its complete design. At present, there is an urgent need to develop conflict-related competence not only of professionals, but also for various groups of the population.

Proses Berpikir Kreatif Siswa Tipe Linguistik dalamPemecahan Masalah Biologi

2014 ◽  
Vol 2 (2) ◽  
Author(s):  
Imelda Aisah Sarip ◽  
Kamid Kamid ◽  
Bambang Hariyadi
Keyword(s):  
Problem Solving ◽  
Data Collection ◽  
Creative Thinking ◽  
Research Data ◽  
Think Aloud ◽  
The Subject ◽  
Thinking Process ◽  
Problem Solving Process ◽  
The Given

The aim of this research is to describe creative thinking process of linguistic type student in biology problem solving. This research is conducted to linguistic intelligence type of subject at SMPN 6 Kota Jambi. SL the subject was selected based on the aim of the research. Data collection is conducted by interview and a modified think aloud method. Data is analyzed based on creative thinking process purposed by Polya.The result of this research shows that SL could find and arrange the given problems and collect data correctly and appropriately. The problem solving steps is done systematically to the end of problem solving process. The last steps problem solving, SL does checking while doing scratching to make sure that the written answers meet her need.

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