| Almond Hull Rot Management |
Almond Hull Rot Management with Quash® Fungicide Prevent hull rot from reducing your almond yields. Quash® Fungicide equips growers with a much-needed option in the fight against hull rot, an extremely tough-to-control, late-season disease that can significantly reduce yield in an unprotected almond crop. Hull rot is caused by two fungi ( Monilinia spp. and Rhizopus stolonifer ) that can occur alone or in combination. Almond hulls are susceptible to hull rot from the beginning of hull split until hulls dry. Hull rot can be reduced by avoiding excess nitrogen fertilization and following cultural practices that increase uniformity of hull split and decrease drying time of the hulls without sacrificing yield or kernel quality*. This includes practicing deficit irrigation at hull split and maintaining that stress for two weeks after hull split. In addition to cultural practices, Quash should be used to reduce the incidence of hull rot Quash is active against both of the fungi that cause hull rot: Rhizopus stolonifer and Monilinia spp. Apply Quash 2.5–3.5 oz/A at 2–3 weeks prior to hull split for Monilinia hull rot or at early hull split for Rhizopus hull rot *2002, Integrated Pest Management for Almonds, 2nd ed., University of California Publication 3308 Symptoms and Signs of Hull Rot in Almonds
Rhizopus Monilinia Photos courtesy of B. Holtz, Univ. California, Coop. Ext. San Joaquin Co.
Quash —A More Effective Tool for Reducing Hull Rot
Quash 2.5 oz + Ph-D® 6.2 oz
55.9%
Quash 2.5 oz
52.5%
Luna® Experience 8 fl oz
52.5%
Quadris Top® 14 fl oz
40.1%
Luna® Sensation 5 fl oz
30.5%
Ph-D® 6.2 oz
21.5%
0
20
40
60
% Control
Source: Jim Adaskaveg, Univ. California, Riverside. Application at hull split; Equal proportion of Monilinia and Rhizopus 144
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