Control of Chocolate Spot in Potato Tubers by Foliar Spray with 2-Chloroethylphosphonic Acid
Open Access
- 1 February 1971
- journal article
- Published by American Society for Horticultural Science in HortScience
- Vol. 6 (1) , 42
- https://doi.org/10.21273/hortsci.6.1.42a
Abstract
Incidence of chocolate spot, known also as internal brown spot, in tubers of the ‘Arran Banner’ cultivar can reach as high as 60% (Fig. 1). This cultivar is widely grown in the Beqa'a plain of Lebanon for its high yield and good storage life. Other cultivars grown elsewhere in potato producing areas of the world are also seriously damaged by this physiological disease. Control in ‘Arran Banner’ in Lebanon was obtained by foliar sprays with 2-chloroethylphosphonic acid (ethephon)4 using rates ranging from 200-600 ppm (Table 1).Keywords
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