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...

AREA–WIDE MANAGEMENT OF HELIOTHIS/HELICOVERPA IN THE DELTA OF MISSISSIPPI
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-NorthAmerica WCRC1

Abstract                                                                         Back to Table of contents Utilizing an entomopathogenic virus on alternate hosts as the main pre–crop treatment, a pilot test was conducted in 1990 and 1992 to manage Heliothis virescens (F.) and Helicoverpa zea (Boddie) in cotton in a 259 square kilometer area in t...

MIGRATION OF COTTON PESTS: PATTERNS AND IMPLICATIONS FOR MANAGEMENT
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-australia WCRC1

Introduction                                                                Back to Table of contents Cotton has a large pest complex (Matthews, 1989), and many of the major pests are migratory to some degree. Kennedy (1975) distinguished insect migration from dispersal because of the persistent, straightened-out movement, and unresponsiveness t...

CONTROLLED ENVIRONMENT STUDY OF THE DEGRADATION OF ENDOSULFAN IN SOILS
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-australia WCRC1

Abstract                                                                         Back to Table of contents The degradation rate of endosulfan applied to a Black Earth soil from South East Queensland, was studied in controlled environment chambers. The degradation rates of a- and b-endosulfan were determined for the soil samples kept at the const...

THE USE OF PHEROMONES TO CONTROL THREE SPECIES OF BOLLWORM IN PAKISTAN
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-Asia WCRC1

Introduction                                                                Back to Table of contents The pink bollworm, Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae) is a major world-wide pest of cotton.  Once the eggs have hatched and the larvae have entered into the bolls it is difficult to control using conventional insectic...

THAI COTTON GROWERS STILL FAR AWAY FROM IPM: CONTRIBUTION OF SYSTEMS APPROACH TO A BETTER UNDERSTANDING OF FARMERS' PRACTICES
By Michel Fok on Mar 13, 2017

Crop Protection Croprotection-Asia

Abstract                                                                         Back to Table of contents On-farm surveys have been performed since 1991 in two cotton growing areas in Thailand for three cropping seasons. A systems approach focused on farmers' technical choices in relation to characteristics of the bio-physical and socio-economi...

IMPACT OF BOLL WEEVIL ERADICATION ON COTTON PRODUCTION AND INSECT MANAGEMENT IN VIRGINIA AND NORTH CAROLINA, USA
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-NorthAmerica WCRC1

Abstract                                                                         Back to Table of contents A boll weevil (Anthonomus grandis [Boheman]) eradication program was begun in September 1978 as an approximately 6,000 ha upland cotton (Gossypium hirsutum L.) trial in the northeast counties of North Carolina (NC) and the southeast corner...

INSECTICIDE RESISTANCE IN HELICOVERPA ARMIGERA (HÜBNER): STATUS AND PROSPECTS FOR ITS MANAGEMENT IN INDIA
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-Asia WCRC1

Abstract                                                                         Back to Table of contents Insecticide resistance and concomitant field failures to control the cotton bollworm, Helicoverpa armigera (Hübner) were first recorded in south India in 1987. During the 1992/93 cropping season a discriminating dose technique was used to r...

PYMETROZINE (CGA 215,944) - A NOVEL NEW CONTROL FOR SUCKING PESTS IN COTTON
By Michel Fok on Mar 13, 2017

Crop Protection WCRC Croprotection-NorthAmerica WCRC1

Abstract                                                                         Back to Table of contents Pymetrozine is a novel insecticide for the control of aphids and other sucking pests in cotton and represents a new class of control agents.  The compound interferes in the feeding behaviour of insects and controls insects resistant to stan...

SCREENING OF SOMATIC MUTANTS FOR RESISTANCE TO VERTICILLIUM WILT IN GOSSYPIUM HIRSUTUM L.
By Michel Fok on Mar 13, 2017

Breeding & Genetic improvement WCRC Breeding-Asia WCRC1

Abstract                                                                         Back to Table of contents Growth and phytotoxin-producing conditions of the Tianman isolate of V. dahliae were studied showing that filtrates of the pathogen cultures were able to make cotton seedlings wilt or die.  Furthermore, the filtrates decreased seed germinat...

INHERITANCE AND GENETIC EFFECT OF CLEISTOGAMY IN UPLAND COTTON
By Michel Fok on Mar 13, 2017

Breeding & Genetic improvement WCRC Breeding-Asia WCRC1

Abstract                                                                         Back to Table of contents Generally Gossypium hirsutum and G. barbadense flowers are chasmogamous. A true-breeding, cleistogamous line was derived from the F2 population of an interspecific cross between G. hirsutum and G. barbadense.  The inheritance of cleistogamy...

IDENTIFICATION OF THE KARYOTYPE OF GOSSYPIUM BICKII PROKH.*
By Michel Fok on Mar 13, 2017

Breeding & Genetic improvement WCRC Breeding-Asia WCRC1

Introduction                                                                Back to Table of contents Chromosome spreads from the root tips of Gossypium bickii Prokh. were analysed to establish an accurate karyotype.  Of 122 cells with clear chromosomes, about 60% (73) did not show any satellites.  Nine exhibited four visible satellites, one sma...

COMMERCIAL UTILISATION OF THE OKRA LEAF MUTANT OF COTTON - THE AUSTRALIAN EXPERIENCE
By Michel Fok on Mar 13, 2017

Breeding & Genetic improvement WCRC Breeding-Australia WCRC1

Abstract                                                                         Back to Table of contents Effects of the okra leaf (OL) mutant of cotton on plant and agronomic traits, and its interaction with insect pests are reviewed.  While a number of favourable effects e.g. reduction of bollrot, earliness of maturity have often been noted,...

DEVELOPMENT OF MAR COTTON GERMPLASM WITH MORPHOLOGICAL MUTANT TRAITS
By Michel Fok on Mar 13, 2017

Breeding & Genetic improvement WCRC Breeding-Asia WCRC1

Abstract                                                                         Back to Table of contents Higher levels of resistance to insects, plant pathogens, and abiotic stresses are needed in cotton cultivars to maintain plant health and increase yield.  The multi-adversity resistance (MAR) program has been successful in transferring and...

HIGH SPEED MEASUREMENTS OF STRENGTH AND ELONGATION
By Michel Fok on Mar 13, 2017

Breeding & Genetic improvement WCRC Breeding-NorthAmerica WCRC1

Abstract                                                                         Back to Table of contents High volume instruments used to class cotton for market are rapid and objective.  Accurate measurements combined with premiums and discounts for specific quality factors provides a good vehicle for cotton improvement. Many textile mills now...

POTENTIAL FOR CROP IMPROVEMENT WITH EXOTIC GERMPLASM AND GENETIC ENGINEERING
By Michel Fok on Mar 13, 2017

Breeding & Genetic improvement WCRC Breeding-NorthAmerica WCRC1

Introduction                                                                Back to Table of contents Of all management strategies applied to crop production, selection of a cultivar with enhanced genetics is the most significant.  The extent of genetic expression contributing to the performance of a crop in its environment is often overlooked o...

PERFORMANCE OF F1 AND F2 HYBRIDS BETWEEN AUSTRALIAN AND USA COMMERCIAL COTTON CULTIVARS
By Michel Fok on Mar 13, 2017

Breeding & Genetic improvement WCRC Breeding-Australia WCRC1

Abstract                                                                         Back to Table of contents Research on F1 cotton hybrids in Australia has produced some promising examples of heterosis but results have been inconsistent.  Given the difficulties of F1 seed production, little research has been conducted in recent years.  However rec...