Verticillium Wilt Of Cotton Research Articles

Resistance to Verticillium Wilt in Cotton: Sources, Techniques of Identification, Inheritance Trends, and the Resistance Potential of Multiline Cultivars

Resistance to Verticillium Wilt in Cotton: Sources, Techniques of Identification, Inheritance Trends, and the Resistance Potential of Multiline Cultivars

Effect of Oil Emulsions on the Uptake of Benomyl and Thiabendazole in Relation to Control of Verticillium Wilt of Cotton

Effect of Oil Emulsions on the Uptake of Benomyl and Thiabendazole in Relation to Control of Verticillium Wilt of Cotton

The Effect of Fallowing Obtained with Skip‐Row Culture on Verticillium Wilt of Cotton

AbstractSkip‐row production of cotton (Gossypium hirsutum L.), plant‐4‐rows‐skip‐4‐rows, permits clean fallowing of the nonplanted rows. The fallow obtained from this cultural practice was effective in reducing Verticillium wilt (Verticillium dalhiae Kelb.) incidence, increasing yield, and improving fiber and seed quality. Irrespective of cultivar used during the 2‐year study, cotton produced on plots fallowed for one season produced longer fiber with a higher micronaire reading. Seed quality was also improved in the single test where this variable was evaluated. Following a year of fallow, the onset of Verticillium wilt was delayed, it developed at a slower rate, and total wilt incidence was lower.

Systemic Fungicidal Effect of Thiophanate Methyl on Verticillium Wilt of Cotton and Its Transformation to Methyl 2-Benzimidazolecarbamate in Cotton Plants

Systemic Fungicidal Effect of Thiophanate Methyl on Verticillium Wilt of Cotton and Its Transformation to Methyl 2-Benzimidazolecarbamate in Cotton Plants

Effects of Row and Plant Spacings on Verticillium Wilt of Cotton1

The effects of row and plant spacings on percent Verticillium wilt (Verticillium albo‐atrum Reinke and Berth.) in ‘Gregg 35,’ a wilt‐susceptible cotton (Gossypium hirsutum L.) adapted to a wide range of row and plant spacings, were studied in single‐ and double‐row planting patterns. Percent wilt was decreased slightly in double‐row and significantly in single‐row patterns by close row spacings. In both planting patterns percent wilt decreased as plant populations (seeding rates) increased from low to medium levels, but percent wilt remained constant or decreased slightly at higher plant populations. The interaction of row widths ✕ seeding rates was significant only for the single‐row patterns.

Possible involvement of a pathogen-produced protein-lipopolysaccharide complex in Verticillium wilt of cotton

Logarithmic phase cultures of Verticillium albo-atrum contained an extracellular, thermostable and non-dialyzable factor which produced all symptoms of Verticillium wilt in excised cotton leaves and seedling cuttings. The active factor was isolated and found to be a protein-lipopolysaccharide (PLP) complex. The PLP attained concentrations up to 1 mg/ml in liquid cultures and was active in excised cotton leaf bioassays at concentrations of 5 μg/ml or greater. The sensitivity of 16 cotton varieties to the PLP was positively correlated with their susceptibility to Verticillium wilt, but fungus isolates of differing virulence produced comparable amounts of the PLP on various culture media. The PLP did not block the uptake of acid fuchsin into the veins of excised cotton leaves and seedling cuttings and [ 14C]PLP readily accumulated in the small veins and interveinal areas of cotton leaves. Although the PLP could not be isolated from diseased cotton leaves, the evidence indicated that it may be involved with the causation of disease symptoms in cotton plants infected with V. albo-atrum.

Control of Verticillium Wilt of Cotton by Spraying with Acidic Solutions of Benomyl, Methyl 2‐henzimidazole carbamate, and Thiabendazole

Control of Verticillium Wilt of Cotton by Spraying with Acidic Solutions of Benomyl, Methyl 2‐henzimidazole carbamate, and Thiabendazole

Effects of Weed Control in Grain Sorghum on Subsequent Incidence of Verticillium Wilt in Cotton

Effects of Weed Control in Grain Sorghum on Subsequent Incidence of Verticillium Wilt in Cotton

Verticillium wilt of cotton in Tamil Nadu

Verticillium wilt of cotton in Tamil Nadu

Root Distribution as a Factor Influencing Symptom Expression of Verticillium Wilt of Cotton

Root Distribution as a Factor Influencing Symptom Expression of Verticillium Wilt of Cotton

Control of Verticillium Wilt of Cotton by Spraying Foliage with Benomyl and Thiabendazole Solubilized with Hydrochloric Acid

Control of Verticillium Wilt of Cotton by Spraying Foliage with Benomyl and Thiabendazole Solubilized with Hydrochloric Acid

Varietal resistance to Verticillium wilt of cotton in Queensland

Varietal differences in susceptibility (as assessed by the proportion of affected plants) to wilt of cotton caused by Verticillium dahliae Kleb., were observed in south-eastern Queensland. The progression of the disease within individual plants, however, was similar in all varieties. Deltapine Smoothleaf, the most widely grown variety in Queensland was one of the most susceptible varieties. Derivatives of Rex or Dixie King were less affected. The disease caused a difference in yield between healthy and diseased plants which could be as high as 30 per cent.

Dead mycelium of Penicillium chrysogenum protects transplanted cotton plants agains fungal wilts in a saline field

Previous studies have shown that the dead mycelium of Penicillium chrysogenum at 900-1,500 kg ha–1 effectively controlled Fusarium and Verticillium wilt of cotton. Our objective was to determine if the dead mycelium is also effective at lower rates under a cotton seedling transplanting system. Columned soil blocks (500 g each), made of fertile soil alone in the first experiment, and both soil and dead mycelium at varying rates in the second experiment, were sown with cotton seeds in 2006 and 2007. Seedlings in the mycelium-free blocks were drenched with aqueous extract of the dead mycelium after full emergence, and then transplanted to a saline field. The disease severity of Fusarium oxysporum f.sp vasinfectum and Verticillium dahliae, leaf chlorophyll and malondialdehyde concentrations, leaf photosynthetic rate and lint yield of the transplanted plants were determined. The aqueous extract at a rate of 1 to 5% provided 18.6 to 25.6% protection against Fusarium wilt but not against Verticillium wilt. Lint yield was slightly increased with the aqueous extract in 2006, but not in 2007. The incorporation of the dead mycelium to soil blocks before sowing was effective in controlling both the Fusarium and Verticillium wilts of cotton. Dead mycelium applied at 1 to 3% (w/w) provided 26-30% protection against Fusarium wilt and 48-50% protection against Verticillium wilt, and increased lint yield by 13-14%. Such incorporation also delayed leaf senescence as indicated by the increased leaf photosynthetic rate and chlorophyll content, and reduced malondialdehyde concentrations. Incorporation of the dead mycelium of P. chrysogenum into soil blocks at a relatively lower rate (270 kg ha–1) would be an effective application mode for wilt control in sustainable cotton production.