Supplementary Antimold Activity of Phosethyl AL, A New Brown Rot Fungicide for Citrus Fruits

Park

Nepal Journal of Science and Technology

et al. 2015

Section: Major Diseases Caused By Oomycetesmentioning

confidence: 99%

Section: Disease Caused Referencesmentioning

confidence: 99%

Biological Control of Oomycetous Plant Pathogens: A Review

Park

Nepal Journal of Science and Technology

et al. 2015

“…Gutter (25) reported that the phosphite-generating compound fosetyl-AI had modest activity on the control of postharvest green mold on orange at concentrations that effectively controlled brown rot. Gutter (25) reported that the phosphite-generating compound fosetyl-AI had modest activity on the control of postharvest green mold on orange at concentrations that effectively controlled brown rot.…”

Section: Controlmentioning

confidence: 99%

Use of Phosphite Salts in Laboratory and Semicommercial Tests to Control Citrus Postharvest Decay

Cerioni

Rapisarda

Doctor³

et al. 2013

Plant Disease

Cerioni, L., Rapisarda, V. A., Doctor, J., Eikkert, S., Ruiz, T, Eassel, R., and Smilanick, J. L. 2013. Use of phosphite salts in laboratory and semicommercial tests to control citrus postharvest decay. Plant Dis. 97;201-212.Potassium phosphite (KP) concentrations that inhibited the germination of 50% of Pénicillium digitatum conidia were 229, 334, 360, 469, 498, or 580 mg/liter at pH 3, 4, 5, 6, 7, or 8, respectively. Increasing phosphate content in media reduced phosphite toxicity. To control green or blue mold, fruit were inoculated with P. digitatum or P. italicum, then immersed 24 h later in KP, calcium phosphite (CaP), sodium carbonate, sodium bicarbonate, or potassium sórbate for 1 min at 20 g/liter for each at 25 or 50°C. Mold incidence was lowest after potassium sórbate, CaP, or KP treatments at 50°C. CaP was often more effective than KP but left a white residue on fruit. KP was significantly Mention of trade names or commercial products in this publication is solely for the purpose of providing specific information and does not imply recommendation or endorsement by the United States Department of Agriculture (USDA). USDA is an equal opportunity employer.

“…There are three types of these fungicides commercially available, namely carbamates, acylanilides and alkyl phosphonates (Cohen & Coffey, 1986). A number of experiments using metalaxyl (Farih et al, 1981;Chitzanidis & Lascaris, 1981;Cohen, 1981Cohen, , 1982, and fosetyl-A1 (Gaulliard & Pelossier, 1983;Gutter, 1983;Cohen et al, 1987; have shown good prospects, in recent years, for the control of brown rot of citrus fruits.…”

Section: Introductionmentioning

confidence: 99%

Control of phytophthora brown rot of citrus fruits¹

Tuset

Portilla

1990

EPPO Bulletin

Control of brown rot of citrus fruits, using the new anti‐oomycete systemic fungicides, has been studied in the field and in packing houses under the climate conditions of Spain. In the field, in rainy weather and at the stage of colour‐break of the fruits, both with artificial inoculation and with natural infection by Phytophthora citrophthora, a single treatment with fosetyl‐A1 at 0.4% a.i. as a foliar spray provided good control of the disease. The highest fungitoxic effects were reached 14–21 days after treatment. Copper oxychloride + mancozeb at 0.3% a.i. showed moderate efficiency. In semi‐commercial experiments in the packing house and in the laboratory, fosetyl‐A1 at 0.3% a.i. strongly controlled infection with zoospores located in different layers of the fruit peel (flavedo or albedo). Fosetyl‐A1 also developed good efficacy in healthy fruits, protecting them from infection by contact. Metalaxyl at.0.2% a.i. also reduced infection by zoospores and contact. Oxadixyl, propamocarb and folpet (reference product) had poor activity against the brown rot fungus. All these data strongly support the value of fosetyl‐A1 for control of brown rot disease of citrus fruit in the field and in the packing house as a post‐harvest treatment. Metalaxyl may also be utilized for this purpose.