Glyphosate-tolerant cotton in Australia: successes and failures

Nadeem Iqbal, Sudheesh Manalil, Bhagirath S. Chauhan, Steve W. Adkins

Research output: Contribution to journalReview article

Abstract

Cotton is an important cash crop grown on 2.5% of the world’s arable land in over 100 countries, and has a 31% share of the world’s fibre market. In Australia, cotton is also a leading crop and contributes around AUD $3 billion to the total agricultural production. Weeds are a major biotic constraint resulting in yield losses of up to 90% and revenue losses of around AUD $100 billion globally and $4 billion to Australian agriculture. Genetically-modified (GM) crops have refashioned the weed management with more dependency on glyphosate. Such overreliance has led to the evolution of 43 glyphosate-resistant (GR) weed populations globally, with 16 species reported from Australia. Such GR weeds along with volunteer glyphosate-tolerant (GT) plants are now decreasing the value of the GM crops and forcing growers to spend more time and effort, and investment in their management. Weed management strategies need to be diversified and integrated with non-chemical methods and alternative herbicides not only to achieve efficient control, but to reduce the rate of evolution of GR weeds. In future, research is needed to improve integrated weed management through development and use of competitive and multiple herbicide-tolerant (HT) crops, organic herbicides, bio-herbicides, RNAi technology and robotics.

Original languageEnglish
Pages (from-to)1536-1553
Number of pages18
JournalArchives of Agronomy and Soil Science
Volume65
Issue number11
DOIs
Publication statusPublished - 19 Sep 2019

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glyphosate
weed
cotton
herbicides
weeds
herbicide
crops
crop
weed control
agriculture
integrated weed management
cash crops
arable soils
volunteers
growers
income
arable land
robotics
agricultural production
markets

Cite this

Iqbal, Nadeem ; Manalil, Sudheesh ; Chauhan, Bhagirath S. ; Adkins, Steve W. / Glyphosate-tolerant cotton in Australia : successes and failures. In: Archives of Agronomy and Soil Science. 2019 ; Vol. 65, No. 11. pp. 1536-1553.
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Glyphosate-tolerant cotton in Australia : successes and failures. / Iqbal, Nadeem; Manalil, Sudheesh; Chauhan, Bhagirath S.; Adkins, Steve W.

In: Archives of Agronomy and Soil Science, Vol. 65, No. 11, 19.09.2019, p. 1536-1553.

Research output: Contribution to journalReview article

TY - JOUR

T1 - Glyphosate-tolerant cotton in Australia

T2 - successes and failures

AU - Iqbal, Nadeem

AU - Manalil, Sudheesh

AU - Chauhan, Bhagirath S.

AU - Adkins, Steve W.

PY - 2019/9/19

Y1 - 2019/9/19

N2 - Cotton is an important cash crop grown on 2.5% of the world’s arable land in over 100 countries, and has a 31% share of the world’s fibre market. In Australia, cotton is also a leading crop and contributes around AUD $3 billion to the total agricultural production. Weeds are a major biotic constraint resulting in yield losses of up to 90% and revenue losses of around AUD $100 billion globally and $4 billion to Australian agriculture. Genetically-modified (GM) crops have refashioned the weed management with more dependency on glyphosate. Such overreliance has led to the evolution of 43 glyphosate-resistant (GR) weed populations globally, with 16 species reported from Australia. Such GR weeds along with volunteer glyphosate-tolerant (GT) plants are now decreasing the value of the GM crops and forcing growers to spend more time and effort, and investment in their management. Weed management strategies need to be diversified and integrated with non-chemical methods and alternative herbicides not only to achieve efficient control, but to reduce the rate of evolution of GR weeds. In future, research is needed to improve integrated weed management through development and use of competitive and multiple herbicide-tolerant (HT) crops, organic herbicides, bio-herbicides, RNAi technology and robotics.

AB - Cotton is an important cash crop grown on 2.5% of the world’s arable land in over 100 countries, and has a 31% share of the world’s fibre market. In Australia, cotton is also a leading crop and contributes around AUD $3 billion to the total agricultural production. Weeds are a major biotic constraint resulting in yield losses of up to 90% and revenue losses of around AUD $100 billion globally and $4 billion to Australian agriculture. Genetically-modified (GM) crops have refashioned the weed management with more dependency on glyphosate. Such overreliance has led to the evolution of 43 glyphosate-resistant (GR) weed populations globally, with 16 species reported from Australia. Such GR weeds along with volunteer glyphosate-tolerant (GT) plants are now decreasing the value of the GM crops and forcing growers to spend more time and effort, and investment in their management. Weed management strategies need to be diversified and integrated with non-chemical methods and alternative herbicides not only to achieve efficient control, but to reduce the rate of evolution of GR weeds. In future, research is needed to improve integrated weed management through development and use of competitive and multiple herbicide-tolerant (HT) crops, organic herbicides, bio-herbicides, RNAi technology and robotics.

KW - Chemical control

KW - glyphosate

KW - glyphosate-resistant weeds

KW - glyphosate-tolerant cotton

KW - seed cotton yield

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JO - ARCHIV FUR ACKER UND PFLANZENBAU UND BODENKUNDE-ARCHIVES OF AGRONOMY AND SOIL SCIENCE

JF - ARCHIV FUR ACKER UND PFLANZENBAU UND BODENKUNDE-ARCHIVES OF AGRONOMY AND SOIL SCIENCE

SN - 0365-0340

IS - 11

ER -