Evaluation of Commercial Cultivars of Sweet Basil Resistant to Downy Mildew, 2018.

Below are photographs of cultivars evaluated in the field at the Long Island Horticultural Research and Extension Center in Riverhead, NY, and also photographs of plants that were kept in pots. See report for information about methods and results plus data table.

Figure 1. Plants in the field on 25 July, 15 days after they were transplanted.

Martina (Susceptible control)

Amazel

Devotion

Obsession

Passion

Prospera

Thunderstruck

Figure 2. Plants in the field on 12 September, when the average percent leaves with symptoms on affected plants was 97% for Martina (susceptible) and 0 – 56% for the resistant cultivars. See report for data.

Martina (Susceptible control)

Amazel

Devotion

Obsession

Passion

Prospera

Thunderstruck

Figure 3. Plants kept in pots outdoors until September. Photographed on 17 September.

Martina (Susceptible control)

Amazel

Obsession

Passion

Prospera

Thunderstruck