The intransit temperatures from seven commercial shipments, as affected by loading patterns, pallet arrangement, and air distribution, are discussed and compared to the results from a previous study of 10 shipments in refrigerated highway trailers. Lettuce that was loaded off the trailer floow and ...
Overwintering aphids in noncultivated plants can migrate in spring and transmit the virus to lettuce fields. This disease is frequent in the Mediterranean area, mainly in the open field. The virus has been reported in lettuce-growing areas in the Central region and in the Southeastern Spain (...