Hop looper, Hypena humuli Harris, can cause substantial defoliation and crop damage by feeding on hop leaves and cones. A 4-yr field study conducted in western Oregon evaluated the abundance of hop looper larvae and associated defoliation of leaves on plants fertilized with nitrogen rates ranging from 44.8 to 269...
In August 2012, wilted hop bines were observed in a yard near Seneca Castle, New York,
affecting 10 to 20% of the plants. Affected bines had a dark stem discoloration and wilted
leaves that remained attached after bines were killed. Dark brown to black, erumpent
pycnidia were aggregated in the...
In August 2012, wilted hop bines were observed in a yard near Seneca Castle, New York,
affecting 10 to 20% of the plants. Affected bines had a dark stem discoloration and wilted
leaves that remained attached after bines were killed. Dark brown to black, erumpent
pycnidia were aggregated in the...
In August 2012, wilted hop bines were observed in a yard near Seneca Castle, New York,
affecting 10 to 20% of the plants. Affected bines had a dark stem discoloration and wilted
leaves that remained attached after bines were killed. Dark brown to black, erumpent
pycnidia were aggregated in the...
Powdery mildew of hop (Podosphaera macularis) may cause economic loss due to reductions in cone yield and quality.
Quantitative estimates of crop damage from powdery mildew remain poorly characterized, especially the effect of late season
disease management on crop yield and quality. Field studies in Washington State evaluated cone yield,...
Powdery mildew of hop (Podosphaera macularis) may cause economic loss due to reductions in cone yield and quality.
Quantitative estimates of crop damage from powdery mildew remain poorly characterized, especially the effect of late season
disease management on crop yield and quality. Field studies in Washington State evaluated cone yield,...
Hop (Humulus lupulus L.) production recently has expanded across the United States to
include areas of the country that have not previously grown hop commercially. In June
2015, a grower in western North Carolina detected powdery mildew in a small (<0.5-ha)
yard during routine scouting. Characteristic signs of powdery mildew...
Hop (Humulus lupulus L.) production recently has expanded across the United States to
include areas of the country that have not previously grown hop commercially. In June
2015, a grower in western North Carolina detected powdery mildew in a small (<0.5-ha)
yard during routine scouting. Characteristic signs of powdery mildew...