ANTAGONISTIC BACTERIA AS A BIOLOGICAL CONTROL AGAINST ICE NUCLEATION ACTIVE PSEUDOMONAS ON STRAWBERRY
Biochemical and physiological characterizations have shown only minimum differences among isolates. In vitro assays indicated that more than 50 percent of isolates inhibit the growth of INA+ bacteria. In the growth chamber, blossoms sprayed with an INA+ strain (FG3) nucleated at -2 °C whereas those sprayed with the antagonistic strain FF1 started to nucleate at lower temperatures (down to -5 °C); the mixture of FF1 and FG3 strains has given intermediate results. In the open field, strain FF1 survived on sprayed plants about 30 days.