The Role of Spiders in the Control of Cotton Pests in the Cotton Cropping Systems of Eastern Uganda
By Muhammad Naveed Arshad on Mar 8, 2019

Crop Protection WCRC WCRC2

ABSTRACT Work on evaluation of crop mixtures for the management of cotton pests has shown beans to be a suitable intercrop that can augement the numbers of gerneralist predators in the cropping systems of E. Uganda. Incidence of generalist predators in the cotton - bean intercrop shows spiders to be more numerous (57%) as compared to other predato...

Inhibition of Esterase Mediated Hydrolysis of 1-Naphthyl Butyrate in the B-Biotype Bemesia tabaci (Hemiptera; Aleyroididae) in Australia
By Muhammad Naveed Arshad on Mar 8, 2019

Crop Protection WCRC WCRC2

ABSTRACT A colourimetric squash test was used to distinguish between native and B-biotype Bemisia tabaci (Gennadius), for field identification in Australia. This test is based on overproduction of esterase iso-enzymes by B-biotype B. tabaci. This test has occasionally been shown to give a false negative due to organophosphates temporarily binding...

Pyrethroid Resistance in the Bollworm Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) in West Africa
By Muhammad Naveed Arshad on Mar 7, 2019

Crop Protection WCRC WCRC2

ABSTRACT The sensitivity of bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) to pyrethroids has been monitored in co-operation with CIRAD-CA in research laboratories of National Research Institutes in West and Central Africa for more that ten years. This survey over the last three years, enabled observations of a tendency for resis...

Quantifying the Organophosphate Resistance of Two Geographically Separate Cotton Aphid Populations by Means of a Polyacrylamide-Gel Electrophoresis (PAGE) Technique
By Muhammad Naveed Arshad on Mar 7, 2019

Crop Protection WCRC WCRC2

ABSTRACT Analysis of isoenzymes of different aphid populations showed differences in molecular densities after the addition of different concentrations of an organophosphate. By adding the insecticide, isoenzyme bands of one population get less dense or disappear, while there were minimal changes in the density of the same bands of another geograp...

Efficacy and Impact of Some Insecticides Used to Control Aphids, Aphis gossypii Glover (Homopters: Aphididae) on Cotton in Uganda, on Predators
By Muhammad Naveed Arshad on Mar 7, 2019

Crop Protection WCRC WCRC2

ABSTRACT Representatives of the main insecticide groups currently being used by farmers for the control of the cotton aphid, Aphis gossypii Glover were evaluated . The four insecticides tested were carbosulfan 35 STD (Marshall), cypermethrin 5% E.C. (Ambush), dimethoate 222g/L + chlorpyrifos 278g/L E.C (Salut) and Monocrotophos (Azodrin E.C.). The...

Management of Insecticide Resistant Helicoverpa armigera (Lepidoptera: Noctuidae) in Cotton in India
By Muhammad Naveed Arshad on Mar 7, 2019

Uncategorized

ABSTRACT Helicoverpa armigera (Hübner) was responsible for some $500 million of damage in India in the 1997-8. Insecticide resistance levels have been monitored routinely at sites throughout the country since 1992 using discriminating dose assays. Resistance to pyrethroids is ubiquitous and stable at around 50-80% in most areas. Organophosphate an...

Mechanism of Resistance in Wild Gossypium species to Helicoverpa armigera (Hübner)
By Muhammad Naveed Arshad on Mar 7, 2019

Crop Protection WCRC WCRC2

ABSTRACT Eight wild species of Gossypium were evaluated to determine the mechanism of resistance to Helicoverpa armigera (Hübner). Wild species, viz. Gossypium anomalum, G. raimondii, G. harknessii, G. arboreum, G. palmari, G. davidsonii, G. armourianum and G. stocksii and the susceptible control MCU 9 and TCHB 213 were included in the study. Ovip...

Effect of Leaf Cuticular Wax Extract of Wild Gossypium spp. on Behaviour of Helicoverpa armigera (Hübner)
By Muhammad Naveed Arshad on Mar 7, 2019

Crop Protection WCRC WCRC2

ABSTRACT Cuticular wax extracts were obtained in hexane from eight wild species of Gossypium and sprayed on G. hirsutum var. MCU 9 plants that are susceptible to attacks of Helicoverpa armigera (Hübner). The extracts adversely affected oviposition and feeding and was highly toxic to neonate larvae of H. armigera. Helicoverpa moths laid fewer eggs...

Insecticide Resistance Mechanisms in Indian Helicoverpa armigera
By Muhammad Naveed Arshad on Mar 7, 2019

Crop Protection WCRC WCRC2

ABSTRACT The cotton bollworm Helicoverpa armigera (Hübner), has developed resistance to almost all groups of insecticides used for its management in India. Studies using biochemical assays and synergists over the past five years on laboratory and field populations indicate that Helicoverpa displays a range of enzymes/isozymes, some of which are un...

The population dynamics of Aphis gossypii Glover (Homoptera: Aphididae) on cotton, in Greece
By Muhammad Naveed Arshad on Mar 7, 2019

Crop Protection WCRC WCRC2

ABSTRACT The population dynamics of Aphis gossypii Glover (Homoptera: Aphididae) on cotton was studied in Greece (region of Magnesia) during the 1992-1997 seasons. The experimental cotton fields (1-2 per year) were kept free from insecticidal treatments during the course of the study. In all cases, the aphid population increased soon after crop es...

Efficacy of Bt Cotton Plants in Australia: What is Going On?
By Muhammad Naveed Arshad on Mar 7, 2019

Crop Protection WCRC WCRC2

ABSTRACT We report on the patterns and causes of variable efficacy of Bt cotton plants for control of Helicoverpa spp. in Australia. Initially, it was hoped that these plants would be efficacious against their target pests throughout the cotton growing cycle. Spatial and temporal changes in efficacy have been followed in field plots of cotton usin...

Analysis of Pyrethroid Resistance in Helicoverpa armigera in Pakistan
By Muhammad Naveed Arshad on Mar 7, 2019

Crop Protection WCRC WCRC2

ABSTRACT Resistance to seven pyrethroids was regularly monitored in field populations of Helicoverpa armigera in Pakistan during 1991 to 1997 using an IRAC leaf-dip method. From 1991 to 1993, resistance was moderate to cypermethrin and cyfluthrin, low to alphacypermethrin, zetacypermethrin and deltamethrin, and very low to lambdacyhalothrin and bi...

Integrated Pest Management on Cotton in South Africa
By Muhammad Naveed Arshad on Mar 6, 2019

Crop Protection WCRC WCRC2

ABSTRACT A wide variety of insects attack cotton in South Africa. Some are such serious pests that chemical control is necessary to ensure a viable yield. Chemical control of one species can influence the occurrence and population density of other species. The bollworm complex can cause severe crop losses and holds the key to overall efficiency of...

A System Approach to Sustainable Insect Pest Management in Cotton
By Muhammad Naveed Arshad on Mar 6, 2019

Crop Protection WCRC WCRC2

ABSTRACT A sustainable insect pest management strategy has been developed with special emphasis on Helicoverpa armigera (Hübner) the success of which evaluated through farmers’ participatory programmes in two villages, Idigarai and Kalipatti, near Coimbatore. The main components of this strategy are (i) growing cowpea, Vigna sinensis on irrigation...

Prospects for a Sustainable Cotton Industry in Tropical Australia Using Novel Crop and Pest Management
By Muhammad Naveed Arshad on Mar 6, 2019

Crop Protection WCRC WCRC2

ABSTRACT Previous attempts, to grow cotton in the Ord River Valley region of tropical North Western Australia between 1963 – 1974 during the summer wet season failed due to a combination of crop management problems and high levels of insecticide resistance in Helicoverpa armigera. This paper describes a multi-disciplinary approach to research whic...

Prospects for a Sustainable Cotton Industry in Tropical Australia Using Novel Crop and Pest Management
By Muhammad Naveed Arshad on Mar 6, 2019

Crop Protection WCRC WCRC2

ABSTRACT Previous attempts, to grow cotton in the Ord River Valley region of tropical North Western Australia between 1963 – 1974 during the summer wet season failed due to a combination of crop management problems and high levels of insecticide resistance in Helicoverpa armigera. This paper describes a multi-disciplinary approach to research whic...

Procedures, Advantages and Constraints of Staggered Targeted Control Programmes on Cotton in West Africa
By Muhammad Naveed Arshad on Mar 6, 2019

Crop Protection WCRC WCRC2

ABSTRACT In the last decade, two main types of staggered targeted control (STC) have been designed by CIRAD in francophone Africa in collaboration with national research institutions. In the first in Benin, Cameroon and Guinea, spray calendars are used with five or six applications at fortnightly intervals. Formulations and doses depend on the pes...

Prevelance of Thielaviopsis basicola in Cotton Soils in Arkansas and its Association with the Root Rot Nematode
By Muhammad Naveed Arshad on Mar 6, 2019

Crop Protection WCRC WCRC2

ABSTRACT Historically, research based on isolations on non-selective media suggested that black root rot caused by Thielaviopsis basicola was not an important component of the seedling disease complex on cotton in the Midsouth of the USA. Recent research with selective media or direct observation suggests that it is, in fact, a common problem in m...

Integrated Pest Management Strategy for Irrigated Cotton
By Muhammad Naveed Arshad on Mar 6, 2019

Crop Protection WCRC WCRC2

ABSTRACT An adaptable IPM package developed for cotton at the Regional Research Station, Raichur was demonstrated on over 100 ha. in farmers fields. It involves integration of seed treatment for early sucking pests and soil born diseases, raising a trap crop, releases of Trichogramma egg parasitoids, application of Helicoverpa NPV and botanicals (...

Hamabia” - Intercrop Integrated Pest Management in the Jordan Valley
By Muhammad Naveed Arshad on Mar 6, 2019

Crop Protection WCRC WCRC2

ABSTRACT The “Hamabia” Project was created in 1994, to implement a multicrop integrated pest management in the Gilboa and Beit Shean Valleys. The project works in an area of 15,000 hectares that includes field crops, vegetables, winter and summer spices, greenhouses and orchards. Together with the Ministry of the Environment, the Division of Agro-...