Submitted to: Mississippi Association of Plant Pathology and Nematology Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: February 20, 2001
Publication Date: N/A
Technical Abstract: Two strawberry cultivar and fungicide trials were conducted during the spring of 2000. The efficacy of a potential new natural fungicide was evaluated in Trial 1 and formulations of a reduced-risk fungicide, PlantPro, was evalutated in Trial 2. Cultivars evaluated were Carlsbad, Chandler, Sweet Charlie and Pelican. An untreated control and a standard fungicide treatment of benomyl plus captan was included in both trials, and azoxystrobin alternated with fenhexamid was included in the PlantPro trial. Fruit yield, size and percentage diseased berries were noted at each harvest. Field ratings were made for phytotoxicity, plant vigor, foliar diseases and anthracnose crown rot. No phytotoxicity was noted in either trial. In Trial 1, the highest yield, largest berries, highest plant vigor rating, lowest percentage of anthracnose, botrytis and total fruit rots, and lowest foliar disease scores were from the benomyl plus captan treatment. There were no differences between the natural fungicide treatments and untreated plots for yield, berry size, plant vigor, fruit rots, or foliar disease. In the PlantPro trail Pelican had the highest yield and Sweet Charlie the lowest. Carlsbad had the largest berries and the largest percentage of berry rots. Sweet Charlie and Pelican had the least amount of anthracnose fruit rot. Plants receiving the azoxystrobin/fenhexamid treatment and those receiving one of the PlantPro formulations at 150 ppm had higher plant vigor ratings than the untreated plants.