Deliverable 1: Develop and recommend sustainable water management strategies for wine, table, raisin, and juice grape production using limited and impaired water supplies.
Investigators: Drs. Jim Ayars, Joan Davenport, Andrew McElrone, Carmen Gispert
Objectives for Deliverable 1:
Determine the effects and limits of deficit irrigation strategies on the yield and quality of wine, grape juice, raisins and table grapes.
Develop technologies to quantify real-time remotely accessible measurements of vineyard-scale evapotranspiration and vine water use.
Deliverable 2: Develop and recommend sustainable water and soil management strategies to minimize the impacts of salinity on grape yield and quality.
Investigators: Dr. Don Suarez, Mr. Mark Battany
Objectives for Deliverable 2:
Evaluate different leaching strategies for root zone salinity control, including winter leaching.
Quantify the impact of irrigation water quality on infiltration.
Characterize the leaching and transport of salt in the soil profiles.
Evaluate the impact of water management strategies on salt accumulation, soil solution chemistry, soil physical characteristics in the root zone and plant nutrient balance.
Deliverable 3: Quantify the effects of objectives 1 and 2 on table grape berry size, color, texture, flavor, on raisin size, flavor, texture, B and B, harvest date, on grape juice brix, color, TA, and methyl anthranalyate and sensory qualities for wine – aroma, mouth feel, flavor and yields.
This deliverable was established to provide guidance for the data collection in the objectives in deliverables 1 and 2. It established the minimum data collection needed to provide consistency in the interpretation of results and comparisons across regions.
Deliverable 4: Develop and expand commercially available grapevine roots that better resist drought and tolerate salinity.