Variability in leaf rust susceptibility among peach cultivars

Abstract

RESUMOVariabilidade entre cultivares de pessegueiro quanto a suscetibilidade à ferrugem da folha (Tranzschelia discolor f. sp. persica)Este trabalho objetivou avaliar a suscetibilidade de trinta e seis cultivares de pessegueiro à ferrugem da folha. Foram realizadas avaliações de percentual de incidência e severidade da doença nas folhas e percentual de desfolha, durante os ciclos de

Peach Rust (Transchelia spp.)

“…Control measures must be started before rust symptoms are severe, and multiple applications of fungicides with different modes of action may be required to achieve acceptable disease control. Preventive treatments of Bordeaux and sulfocalcic mixtures at the beginning of the season can help to reduce the initial inoculum (Citadin et al 2010). Peach rust fungicide application usually starts after the trees leaf out; however, management for peach rust can be combined with peach scab control.…”

Potassium, calcium and copper phosphite to control peach rust and brown rot

“…Studies carried out by Martins (1994) in 'Aurora II' and 'Flor da Prince' peach orchards in Paranapanema, SP, showed that the ideal scenario for the development of the disease would be the alternation of day/night temperatures, close to 23/18°C. Comparing cultivars, Citadin et al (2010) showed that 'Chimarrita' is a high susceptible cultivar. Our results showed that the treatments used in the cultivars 'Chimarrita' and 'BR1' did not present any statistical difference in the rust incidence, as well as, in the severity in the cultivar 'BR1'.…”