HOST RESISTANCE TO THE LEAFHOPPER, AMRASCA DEVASTANS (DISTANT) IN COTTON, GOSSYPIUM SPP.
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-Asia WCRC1

Abstract                                                                         Back to Table of contents The cotton leafhopper, Amrasca (Empoasca) devastans (Distant) is a key pest on Upland cotton in India and an upsurge of the pest has been noticed in recent years.  The nymphs and adults desap the leaves resulting in hopperburn, drying and s...

PEST MODELS FOR DECISION SUPPORT – DEVELOPMENT AND APPLICATIONS
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-NorthAmerica WCRC1

Introduction                                                                Back to Table of contents In cotton crop management, there are many solutions to problems relating to insects, weeds, irrigation, fertilization, harvest, etc.  Almost every expert has a different solution.  How can we know which solution or recommendation is best?  One w...

ASSESSING POPULATION STRUCTURE IN THE COTTON BOLLWORM, HELICOVERPA ARMIGERA (LEPIDOPTERA: NOCTUIDAE), USING VARIATION IN THE A+T-RICH REGION OF MITOCHONDRIAL DNA
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-australia WCRC1

Abstract                                                                         Back to Table of contents Helicoverpa armigera is an introduced pest that attacks a wide variety of agricultural crops in Australia, especially cotton.  Genetic variation in mitochondrial DNA (mtDNA) is being examined amongst individuals from different geographical...

MANAGEMENT OF THE COTTON BOLL WEEVIL WITH ATTRACT-AND-KILL-DEVICES
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-NorthAmerica WCRC1

Abstract                                                                         Back to Table of contents Poison baits such as molasses laced with arsenic were employed against the cotton boll weevil, Anthonomus grandis grandis Boheman, soon after the pest entered the United States in 1893 but were never effective. The search for an effective a...

MODELLING PHEROMONE USE FOR PINK BOLLWORM CONTROL IN EGYPT
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-MedMiddleEast WCRC1

Abstract                                                                         Back to Table of contents In 1994 Egypt will use artificial pheromones for pink bollworm control on 150,000 ha of cotton, 45% of the national crop.  The COT plant and insect simulation model has been initialised for the main long staple cotton varieties (Giza'75 and...

PROBLEMS AND PROSPECTS OF MANAGEMENT OF INSECTICIDE RESISTANCE IN HELICOVERPA ARMIGERA (HÜBNER) IN INDIA
By Michel Fok on Mar 13, 2017

Crop Protection Croprotection-Asia

Abstract                                                                         Back to Table of contents Insecticide resistance in Helicoverpa armigera (Hübner) is a major threat to crop production in India.  Critical gaps in the knowledge base for management of resistant H. armigera in India are identified.  The status, need and constraints t...

IMPACT OF THE INTRODUCTION OF THE COTTON BOLL WEEVIL IN BRAZIL
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-LatinAmerica WCRC1

Abstract                                                                         Back to Table of contents The populations of Anthonomus grandis Boheman that were first reported in Brazil in the state of São Paulo in February 1983, and in the state of the Paraíba in the northeastern region in August 1983, are morphologically similar to the south...

INSECTICIDE RESISTANCE IN MAJOR COTTON PESTS WORLDWIDE: INCIDENCE, MECHANISMS AND MANAGEMENT
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-NorthAmerica WCRC1

Abstract                                                                         Back to Table of contents Management of insect pests is required for successful cotton production in most of the world's cotton producing areas.  For many years insecticides have played the primary role in management programs.  The occurrence of resistance is now li...

STATUS OF TOBACCO BUDWORM PYRETHROID RESISTANCE IN MEXICO
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-LatinAmerica WCRC1

Abstract                                                                         Back to Table of contents The tobacco budworm (TBW) Heliothis virescens (F.) is a common insect pest of cotton in Mexico. Since the early 1980s pyrethroids have been used successfully for control of this and other insect pests of cotton. In order to evaluate the res...

EFFECTIVE SPRAY COVERAGE MEASURING PROCEDURES
By Michel Fok on Mar 13, 2017

Crop Protection WCRC WCRC1

Abstract                                                                         Back to Table of contents A computer vision system was developed to analyse spray coverage on leaves and target paper strips.  The rapid computer analysis of the captured image gives the size distribution of the droplets and the relative area of the target that was...

INCREASED DEPOSITION OF INSECTICIDE USING TURBULENT AIR ASSISTANCE
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-MedMiddleEast WCRC1

Abstract                                                                         Back to Table of contents A canopy turbulent air jet sprayer was evaluated and found to achieve better coverage of both sides of cotton leaves. This opens up the possibility for the use of lower rates of conventional insecticides and perhaps also non-toxic crop oils...

INTEGRATED PEST MANAGEMENT IN COTTON
By Michel Fok on Mar 13, 2017

Crop Protection WCRC WCRC1

Introduction                                                                Back to Table of contents Mr Chairman, Ladies and Gentlemen;  it is a great honour to be asked to give this keynote address on Integrated Pest Management in Cotton (IPM) to this distinguished and expert audience representing such a large number of countries and such a wi...

DEVELOPMENT OF LABORATORY AND FIELD ELISA TESTS FOR DETECTION OF ENDOSULFAN IN WATER AND SOIL
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-australia WCRC1

Abstract                                                                         Back to Table of contents Environmental monitoring of endosulfan residues is currently being achieved by gas chromatographic analysis, but there is a need for faster and cheaper analysis that can be conducted in the field as well as in the laboratory. To satisfy thi...

THE FATE OF ENDOSULFAN SPRAYED ON COTTON
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-australia WCRC1

Abstract                                                                         Back to Table of contents An extensive analysis of the total burden of endosulfan in cotton growing soils has been conducted over the past three years on four cotton fields in the Namoi valley of northern New South Wales. The study indicates that the maximum total b...

COMPARATIVE INFORMATION ON THE LOCAL ABUNDANCE OF TWO PESTS, HELICOVERPA ARMIGERA (HÜBNER) (LEPIDOPTERA: NOCTUIDAE) AND APHIS GOSSYPII (GLOVER) (HOMOPTERA: APHIDIDAE) AND SELECTED PREDATORS ON COTTON IN EASTERN TANZANIA
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-EastSouthAfrica WCRC1

Abstract                                                                         Back to Table of contents Seasonal occurrence of predators of Helicoverpa armigera (Hübner) and Aphis gossypii (Glover) on cotton was studied between 1989 and 1991 in eastern Tanzania. Major predators were chrysopids, coccinellids, syrphids and ants. These predators...

THE USE OF BACULOVIRUSES IN COTTON IPM
By Michel Fok on Mar 13, 2017

Crop Protection WCRC WCRC1

Abstract                                                                         Back to Table of contents Insect pathogenic baculoviruses offer a means of pest control that is safe to non-target organisms and environmentally benign.  Control of insect pests on cotton with baculoviruses as an alternative to, or in conjunction with, chemical inse...

SYNTHETIC PYRETHROID INDUCED COTTON PLANT LEAF TISSUE MORPHOLOGICAL CHANGES AND INCIDENCE OF BEMISIA TABACI
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-Asia WCRC1

Abstract                                                                         Back to Table of contents Trials were conducted during the 1989 and 1990 cotton growing seasons at Parbhani, Maharashtra State, India to study the impact of synthetic pyrethroids on the incidence of the whitefly, Bemisia tabaci (Gennadius).  Treatments consisted of:...

INSECTICIDE RESISTANCE MANAGEMENT AS A PART OF AN IPM STRATEGY IN ISRAELI COTTON FIELDS
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-MedMiddleEast WCRC1

Abstract                                                                         Back to Table of contents Since the 1950s, growing cotton in Israel, has been associated with many pesticide applications, mainly against the whitefly, Bemisia tabaci (Gennadius), the Egyptian cotton leafworm, Spodoptera littoralis (Boisduval), the pink bollworm, Pe...

FIPRONIL: A NEW SOIL AND FOLIAR INSECTICIDE FOR COTTON
By Michel Fok on Mar 13, 2017

Crop Protection Croprotection-NorthAmerica

Abstract                                                                         Back to Table of contents Fipronil [(+)-5-amino-1-(2,6-dichloro-a,a,a-trifluoro-p-toly)-4-tri-fluoromethylsulfinylpyrazole-3-carbonitrile] is a new pyrazole insecticide that provides excellent control of many foliar insects on cotton.  Fipronil at 100 g a.i./ha appl...

CHEMICAL CHARACTERIZATION OF COTTON INSECT HONEYDEW AND ELIMINATION OF STICKINESS OF HONEYDEW-CONTAMINATED LINT
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-NorthAmerica WCRC1

Abstract                                                                         Back to Table of contents Cotton fiber stickiness due to honeydew from insect infestations is a severe problem in many cotton producing countries.  In the southwest United States, honeydew secreted by the sweetpotato whitefly (Bemisia tabaci Gennadius) or cotton aph...