Gordon Johnson, Retired; gcjohn@udel.edu Blackberries are being harvested throughout the region currently. The blackberry is a composite fruit with many tiny berries (druplets) attached to a receptacle. These druplets are subject to damage during the ripening period. The following are… Continue Reading
Gordon Johnson, Retired Oleiculturist; gcjohn@udel.edu July heat waves often cause losses in vegetables. The following are some effects of high temperatures on vegetable crops. The plant temperature at which tissue dies is around 115°F. Normally, plant temperature is just above… Continue Reading
Gordon Johnson, Retired Oleiculturist; gcjohn@udel.edu With the recent hot temperatures and expected in July and August, there is a high potential for sunburn in fruits and fruiting vegetables. Growers may need to consider ways to protect against sunburn. Sunburn is… Continue Reading
Jerry Brust, IPM Vegetable Specialist, University of Maryland; jbrust@umd.edu Southern bacterial wilt of tomato, which is caused by the soil-borne bacterium Ralstonia solanacearum Race 1, has been found in a couple of tomato fields in the past week. This pathogen… Continue Reading
Jarrod O. Miller, Extension Agronomist, jarrod@udel.edu Potassium (K) deficiencies have been showing up in a few of our fields. Like nitrogen (N), leaves will start to yellow at the bottom of the plant, but the yellowing should extend along the… Continue Reading
