Non-Chemical Weed Control
First Edition
Khawar Jabran
Department of Plant Protection, Faculty of Agriculture and Natural Sciences, Duzce University, Duzce, Turkey
Bhagirath S. Chauhan
The Centre for Plant Science, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Australia
Copyright
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Contributors
Mehmet Arslan Erciyes University, Kayseri, Turkey
Graham Brodie Melbourne University, Dookie, VIC, Australia
Bhagirath S. Chauhan The University of Queensland, Gatton, QLD, Australia
Shahid Farooq Faculty of Agriculture, Gaziosmanpaa University, Tokat, Turkey
Mubshar Hussain Bahauddin Zakariya University Multan, Multan, Pakistan
Khawar Jabran Dzce University, Dzce, Turkey
Nicholas E. Korres University of Arkansas, Fayetteville, AR, United States
Carolyn J. Lowry University of New Hampshire, Durham, NH, United States
Charles Merfield The BHU Future Farming Centre, Canterbury, New Zealand
Arslan M. Peerzada The University of Queensland, Gatton, QLD, Australia
Richard G. Smith University of New Hampshire, Durham, NH, United States
Ahmet Uludag
anakkale Onsekiz Mart University, anakkale, Turkey
Dzce University, Dzce, Turkey
Ilhan Uremis Mustafa Kemal University, Hatay, Turkey
Preface
Weeds are the yield-limiting biotic factors that grow in crops without human attention. They feed on moisture and nutrients, which are otherwise to be used by crop plants. Also, weeds occupy space and snatch the light that is supposed to be utilized by crop plants. In addition, weeds interfere with the crop growth processes by exuding certain chemicals and also through root interferences. Ultimately, weeds disturb the growth of crop plants, deprive them of resources, decrease the crop yields, and increase the cost of production. In some crops, weeds may cause minor yield losses ~<10%; however, in several field crops (having an important role in global food security), weeds may reduce yield by nearly 50%. In several instances, weeds can also result in total failure of the crop. On a global scale, these losses approach to billions of dollars along with a considerable reduction in food availability. Owing to these facts, weed researchers are working all over the world to fight against weeds.
Since its advent in the mid-20th century, chemical control has been the most followed weed control method. This weed control method contributed significantly to reduce the damages caused by weeds to crops and highly improved the crop yields over the last 56 decades. However, several problems are also associated with this weed control method. Most important of these include herbicide residues in food, environmental pollution, and herbicide resistance evolution in weeds. Hence, researchers from all across the globe are focusing on weed control methods that may provide an alternative to herbicidal weed control. Moreover, chemical weed control is not permitted in cropping systems such as organic farming. Hence, nonchemical weed control methods are inevitable to suppress weeds in such farming systems.
Classical nonchemical weed control methods include the use of preventive, cultural, and mechanical weed control methods. Although these methods possess effectiveness against weeds, they do not provide enough weed control, which may satisfy the standards of intensive and precision farming. Recent literature addresses the use of nonchemical weed control methods in modern agriculture and organic farming. However, in most of the cases, the classical techniques of nonchemical weed control have been discussed. Moreover, most of such literature is composed of research publications rather than books or monographs. This book brings the most recent nonchemical weed control techniques (in addition to classical nonchemical weed control methods). The book is useful for teaching and research staff of universities and agricultural research institutes and students. Other communities who will benefit from this book include the extension specialists and growers, particularly the ones who prefer to grow their food organically.
Khawar Jabran, Duzce University, Turkey
Bhagirath S. Chauhan, The University of Queensland, Australia
Chapter 1
Overview and Significance of Non-Chemical Weed Control
Dzce University, Dzce, Turkey
The University of Queensland, Gatton, QLD, Australia
Abstract
Weeds are among the most important pests of agricultural crops that not only decrease the crop yields but also severely damage the quality of produce. Herbicides are usually effective in suppressing weeds occasionally supplemented with other weed control methods. During recent times, a number of factors have increased the importance of non-chemical weed control methods. Some of these are environmental concerns arising by overuse of pesticides, rising demands for organic food, and an evolution of herbicide resistance in weeds. This chapter discusses why non-chemical weed control is needed? and also provides an overview of currently available non-chemical weed control techniques.