Davenport, Joan

Recent research shows that blackleaf in grapes is due to a combination of water stress and high UV-B radiation. Learn how to identify and control this disease in Concord and winegrapes by addressin ...

Some growers manage soils with very different textures (sand to silt to clay) and/or different depths (shallow to deep), all within the same field. These types of highly variable soils make irrigatio ...

Vineyard establishment requires careful planning and implementation. This guide is designed to help you through the initial questions and considerations before establishing a new vineyard. Early decis ...

Understanding the nutrient requirements of perennial fruit crops is paramount to the longevity and sustainability of a commercial operation. This guide provides basic information on grape plant nutrit ...

The Washington State Juice Grape Sustainability Report Card is designed to help you identify areas in which your vineyard operation excels and where there is room for improvement.

Please note ...