Posts
Cotton Leaf Curl Virus: A Threat to Pakistan Cotton
By
Muhammad Naveed Arshad
on
Feb 15, 2019
ABSTRACT Spread of cotton leaf curl virus (CLCuV) in cotton growing areas of Punjab cause immense losses in cotton production in Pakistan. It appeared in epidemic form in 1998, but became serious from 1992-93. Studies to combat this problem centres around the characterization of virus, its vector (whitefly), alternate host and the causative enviro...
Distribution of Heliothine Larvae in Bt and Non-Bt Cotton in Texas
By
Muhammad Naveed Arshad
on
Feb 14, 2019
ABSTRACT Knowledge of population dynamics in heliothines in transgenic cotton is needed to develop resistance management strategy and scouting guidelines. The spatial distribution of heliothine larvae within and among transgenic cotton plants is likely to be influenced by variation in toxin expression within individual plants and throughout the gr...
Chlorguard Plus: New Insecticide Combination Product Effective Against Cotton Bollworm, Helicoverpa armigera (Hb.)
By
Muhammad Naveed Arshad
on
Feb 14, 2019
ABSTRACT Studies undertaken to manage bollworm, Helicoverpa armigera Hübner in irrigated cotton in Raichur, India over three seasons, indicate some benefits of using certain insecticide mixtures. These benefits included an overall reduction in sucking pests and reduced damage by H. armigera. Resistance of H. armigera was lower to mixtures than to...
Okra-Leaf and Normal Leaf Cotton Resistance to Silverleaf Whitefly
By
Muhammad Naveed Arshad
on
Feb 14, 2019
ABSTRACT Okra-leaf and normal leaf upland cotton cultivars and experimental breeding-lines were evaluated for susceptibility to silverleaf whitefly, Bemisia argentifolii Bellows and Perring and cotton leaf crumple disease caused by cotton leaf crumple geminivirus (CLCV). In March 1997, 16 cotton cultivars and breeding-lines were sown into a random...
Cotton Insect Pest Control with Indoxacarb
By
Muhammad Naveed Arshad
on
Feb 14, 2019
ABSTRACT The cotton insect pest spectrum is dominated by the orders Lepidoptera and Homoptera. The status of different pests and control measures on cotton is dynamic and varies with geography and pest complex. Indoxacarb, a new broad-spectrum Lepidoptera control agent with some activity against Homoptera (e.g. Empoasca spp.), has a unique mode of...
Synergistic Effect of Piperonyl Butoxide on the Toxicity of Delyamethrin Against Two Resistant Strains of the Bollworm
By
Muhammad Naveed Arshad
on
Feb 14, 2019
ABSTRACT Helicoverpa armigera is a key-pest of cotton in West Africa, controlled by pyrethroids for more than twenty years. In the Côte d’Ivoire, susceptibility to pyrethroids is monitored every year on populations collected in Bouaké at the end of the season (BK strains). A loss of effectiveness to cypermethrin and deltamethrin has been observed...
Resistance of Aphis gossypii (Homoptera:Aphididae) to Insecticides
By
Muhammad Naveed Arshad
on
Feb 14, 2019
ABSTRACT The cotton aphid Aphis gossypii is a serious cotton pest in some regions of Greece. Recently, reports from different regions suggest that it can no longer be controlled with applications of insecticides that were formerly effective, especially organophosphates and pyrethroids. Laboratory biossays were conducted from 1993 to 1997 to determ...
Bt Cotton: Status of Heliothine Resistance in the United States
By
Muhammad Naveed Arshad
on
Feb 14, 2019
ABSTRACT Resistance to the delta endotoxin proteins of Bacillus thuringiensis (Bt) by insects is receiving considerable interest both nationally and internationally for three primary reasons: unprecedented interest on the part of the environmental community and organic producers; the registration and deployment of transgenic plants in many countri...
Esterase Inhibitors Restore Pyrethroid Susceptibility in Australian Helicoverpa armigera
By
Muhammad Naveed Arshad
on
Feb 14, 2019
ABSTRACT Pyrethroid resistance in Australian Helicoverpa armigera field populations is primarily a consequence of the over production of esterase isoenzymes that metabolize and possibly sequester pyrethroid insecticides. Biochemical studies show that organophosphorous compounds inhibit pyrethroid resistance associated esterases in H. armigera. Est...
Predatory Arthropods in Australian Cotton Fields
By
Muhammad Naveed Arshad
on
Feb 14, 2019
ABSTRACT Over 50 species of predatory arthropods have been recorded in Australian cotton fields. The complex of generalist predators in Australian cotton has similarities and differences to those in other countries. It is dominated by coccinelids and other beetle species, bugs, ants and spiders. These predators attack Helicoverpa armigera and H. p...
Antixenosis and Antibiosis Determination to Bollworm (Heliothis virescens) in Seven Advanced Lines and Three Cultivars of Cotton (Gossypium hirsutum L.) in Argentina
By
Muhammad Naveed Arshad
on
Feb 14, 2019
ABSTRACT Antixenosis to Heliothis virescens was evaluation in trials to test genetic resistance in three cultivars and seven advanced lines of cotton. Genotypes tested were: 1-Pora INTA, 2-Guazuncho2 INTA, 3- “okra leaf”, 4-”glandless”, 5-”without trichomes”, 6-”nectariless”, 7-”without trichomes - okra leaf”, 8-”frego bract”, 9-Deltapine 90 and a...
Composting Cotton Mill Waste
By
Muhammad Naveed Arshad
on
Feb 12, 2019
ABSTRACT Composting of cotton mill wastes may provide means for the production of a stable organic material, useful for soil improvement and as a substrate for plant growth. The aim of this work was to examine the composting process of cotton wastes and to evaluate the produced compost. Three composting piles were formed. In the first the ratio C/...
Cotton Pesticides in Perspective: Minimizing their Impact on Produce and in Riverine Ecosystems
By
Muhammad Naveed Arshad
on
Feb 12, 2019
ABSTRACT Despite measures taken to reduce reliance on chemicals (e.g. Ingard cotton), production of Australian cotton still involves significant inputs of pesticides, with the potential to contaminate other agricultural produce and riverine ecosystems. Since 1993, the environmental fate and transport of pesticides used in cotton growing have been...
Beneficial Use of Municipal, Industrial and Agricultural Wastes in Cotton Production
By
Muhammad Naveed Arshad
on
Feb 12, 2019
ABSTRACT Most row-cropped soils of the southern USA are low in organic matter and must be limed frequently to maintain an acceptable pH. Industry, municipalities and agriculture produce organic and other waste materials that can be used as soil amendments to increase both soil organic matter and pH. Field experiments were conducted on Gigger-Gilbe...
Response to Pix of cotton varieties in Greece
By
Muhammad Naveed Arshad
on
Feb 11, 2019
ABSTRACT The climatic conditions in Greece, especially in the north of the country, limit crop duration. Maturing the crop early is frequently needed to avoid the risk of rain and cool temperature at the time of harvest. In these conditions it is important to secure the bottom and the first position bolls on the plants. The studies conducted in Gr...
Effect of Salinity on Botanical Characters and Fiber Maturity of Three Egyptian Cotton Cultivars
By
Muhammad Naveed Arshad
on
Feb 11, 2019
ABSTRACT The objective of this study was to investigate to extent salinity affects the growth and other characters of three Egyptian cotton cultivars: Giza 77, Giza 75 and Giza 80. The salinity levels were 0, 2000, 4000 and 6000 ppm of either NaCl + CaCl2 or NaCl + KCl. Germination speed and capacity were lower as the concentration of various were...
Production of High Gossypol Cotton Plants with Low Gossypol Seed from Trispecies Hybrids Including G. sturtianum Willis
By
Muhammad Naveed Arshad
on
Feb 11, 2019
ABSTRACT Two tri-species hybrids that include G. hirsutum L. (2n=4X=52 (AD genome)) were created to develop upland cotton plants with low gossypol seed and high gossypol aerial parts. G. sturtianum Wil. was used as the donor parent (2n=2x=26, genome C1) and a wild American diploid cotton, G. thurberi Tor. (2n=2x=26, genome D1) or G. raimondii Ulb....
Male sterility- New Frontiers in Cotton Breeding
By
Muhammad Naveed Arshad
on
Feb 11, 2019
ABSTRACT Conventional hybrid cottonseed production is expensive and this has paved the way for intensification of research into male sterility systems in cotton. Histological, morphological differences, yield and fiber properties and changed restorer background were studied to establish facts on male sterility systems. Post meiotic obstruction in...
Heterosis Component Studies in Upland Cotton
By
Muhammad Naveed Arshad
on
Feb 11, 2019
ABSTRACT Heterosis is by far the most important and effective tool in the hand of crop breeders for effecting rapid improvement in the yield and others economic attributes. Study of heterosis and inbreeding depression has a direct bearing on the breeding methodology to be employed for genetic improvement. In the present study, four diverse parents...
Cotton Hybrids and their Role in Indian Economy
By
Muhammad Naveed Arshad
on
Feb 11, 2019
ABSTRACT India is the pioneer country in the world for cultivating hybrid cotton on a commercial scale. The world’s first intra-hirsutum hybrid i.e. H4 was released in 1970 from Surat (Gujarat) and the world’s first interspecific tetraploid hybrid i.e. “Varalaxmi” was released from Dharwad (Karnataka). Later on, several high yielding hybrids in te...