Steadily reduce soil moisture levels from late January to late May to induce minor stress and aid vine dormancy. Then return soils to field capacity before budburst. Nutrition Most soils in Carnarvon are very fertile and need little fertiliser. Base your fertiliser programs on leaf analysis. Many soils in the district produce magnesium deficiency symptoms late in the season.
Powdery mildew is the major fungal problem in the district.
You may need to control grasshoppers, mealy bug, Mediterranean fruit fly, bunch mite and olive scale. Spray programs are available to control all insect or fungal problems. Cool storage All grapes produced in the area need rapid cooling within 6 hours of harvest to remove field heat. Transport the grapes to market in refrigerated vans. Recommendations Redglobe grafted to Ramsey rootstock is recommended as a table grape for commercial production in the Carnarvon district.