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... Varying levels (10⁵ to 10⁷/egg) of Salmonella Typhimurium were inoculated onto fertile hatching eggs by immersion. After this, the inoculated eggs were untreated (control), water treated, hydrogen peroxide (1.5%) treated, or Timsen treated (n-alkyl dimethyl benzyl ammonium chloride as a commercial bactericide-fungicide). Hydrogen peroxide was superior to Timsen as an egg treatment to eliminate art ...
... Based on preliminary results on antioxidant enzymes the present investigations were focused on the changes in peroxidase activities during the infection process and disease development. Assays were performed with apple seedlings and cultivars grown under greenhouse conditions as well as with in vitro plantlets ('Golden Delicious', 'Pinova', 'Greensleeves', 'M26'). The influence of pesticides, e.g. ...
... An "advance" is defined as any technology that leads to an increase in production of Kappaphycus alvarezii (Doty) Doty, K striatum Schmitz and Eucheuma denticulatum (Burman) Collins et Harvey (commercial eucheumatoid species) per unit time, effort, area and cost in more than one cultivation area. The present review has shown that no true advances have taken place in commercial eucheumatoid farming ...
... The selective effect of quantitative host resistance on pathogen aggressiveness is poorly understood. Because two previous experiments with a small number of bread wheat cultivars and isolates of Mycosphaerella graminicola had indicated that more susceptible hosts selected for more aggressive isolates, we conducted a larger experiment to test that hypothesis. In each of 2 years, six cultivars diff ...
... Alternative control agents, including UV-type C (254 nm) irradiation, yeasts antagonistic to fungal growth, chitosan and harpin, were evaluated for their ability to induce resistance in cv. Red Delicious apple fruit against postharvest blue mold caused by Penicillium expansum. Freshly harvested and controlled atmosphere (CA)-stored fruit were treated with these agents at different doses and concen ...
Sclerotinia sclerotiorum; foliar spraying; beans; pesticide application; Botrytis cinerea; fungal diseases of plants; cyprodinil; iprodione; disease control; Phaseolus vulgaris; plant pathogenic fungi; thiophanate-methyl; vinclozolin; pods; New York
Abstract:
... Human health and environmental concerns have led to the eventual phase-out of benomyl (Benlate) and vinclozolin (Ronilan), two efficaceous, broad spectrum fungicides widely used on a range of crops, including snap beans. With fewer registered fungicides available for mold control, snap bean growers are in need of alternatives. We compared six foliar fungicides against Ronilan for gray (Botrytis ci ...
... This study examined the mechanisms by which nitrogenous amendments such as meat and bone meal kill the soilborne plant pathogen Verticillium dahliae. The effect of nitrogen products from the amendments on the survival of microsclerotia of V. dahliae was examined by solution bioassay and soil microcosm experiments. Ammonia and nitrous acid but not their ionized counterparts, ammonium and nitrite, w ...
Claviceps; Sorghum bicolor; disease control; disease resistance; ergot; flowering; genetic background; grain sorghum; regression analysis; temperature; weather; South America
Abstract:
... Ergot caused by Claviceps africana Frederickson, Mantle & de Milliano has become an important constraint to F1 hybrid seed production in North and South America. Identification and utilization of sources of host-plant resistance would contribute to the effective control of this disease. A Design II mating scheme was used to test the combining ability of four reported sources of ergot resistance in ...
orchards; cultivars; Erwinia amylovora; Pyrus communis; blight; antibiosis; plant diseases and disorders; disease control; field experimentation; streptomycin; Malus domestica; Pantoea agglomerans; oxytetracycline; population dynamics; light; biological control; Oregon
Abstract:
... Fire blight, caused by Erwinia amylovora, is the most serious bacterial disease of pear and apple trees. Biological control with strains of Pantoea agglomerans (syn. Erwinia herbicola) may provide an effective disease management strategy for fire blight. Most strains of P. agglomerans evaluated for suppression of fire blight produce compounds that inhibit the growth of E. amylovora in culture. The ...
... The use of live vaccines, either attenuated or non-attenuated, for the control of coccidiosis due to Eimeria infections in broiler breeder or layer chickens is well established. Use in broilers, however, has been slow to gain acceptance. This has been partly for economic reasons, but also because of perceived adverse effects on early chick growth, particularly with non-attenuated vaccines, and con ...
... A set of N-arylbenzenesulfonamides with various substituents at the arylamine and benzenesulfonyl positions were prepared, and their antifungal properties were measured in vitro against such plant pathogenic fungi as Pythium ultimum, Phytophthora capsici, Rhizoctonia solani, and Botrytis cinerea. Compounds 3, 4, 8, 9, 10, 14, 16, 18, 20, 21, 24 and 27 had antifungal activity over a broad spectrum ...
... Metam sodium alone and in combination with 1,3-dichloropropene plus 17% chloropicrin (1,3-D+C-17) were evaluated under polyethylene mulch film as alternatives for methyl bromide in tobacco and tomato transplant production for both efficacy against pests and crop safety. Eight different weed species, 10 genera or species of fungi and several agronomic criteria were evaluated at three different site ...
... The effects of γ-decalactone and δ- decalactone on fungal growth and aflatoxin biosynthesis in Aspergillus flavus were studied. The two compounds delayed spore germination and reduced the fungal growth rate at concentration levels between 300 and 500 ppm. γ-Decalactone completely inhibited germination and growth at 500 ppm. Aflatoxin B1 biosynthesis was inhibited by 57-100%, depending on the conce ...
Erwinia amylovora; Pyrus pyrifolia; breeding; buds; clones; cultivars; disease control; extinction; flowers; germplasm; indigenous species; industry; land use; markets; pears; rootstocks; temperate zones; trees; China; Japan; Korean Peninsula; Taiwan; United States
Abstract:
... An estimated 72% of all known pear species are native to Asia. The United States houses 1,500 clones, 40 % of these holdings are Asian pear cultivars. Land development throughout Asia poses a serious threat to indigenous Asian pear species. Some of these are facing extinction, i.e. P. koehnei. It is an imperative that Asian countries cooperate in a germplasm protection and preservation research ve ...
... Asian pear production in Thailand is very small compared with the production in some Asian countries, like Korea, Japan, China and India. In the South East Asian region, Thailand and Myanmar grow the Asian pear. The production of Asian pear in Thailand is confined to the highland areas in northern Thailand, where the climate is rather mild and a period of chilling occurs in winter to break bud dor ...