Mechanical and chemical weed control continued in fruit tree orchards. Grapes continued to leaf out. Sulfur treatments were applied to grapevines where rain occurred. Second applications for downy mildew control in grapes were applied. Shoot removal in vineyards continued. Fungicide was applied to wine grapes. Some growers applied the necessary pesticides for European Grapevine moth prevention.
Prune trees continued to set fruit. Pomegranate bloom continued. Mid-month hail damage was spotty throughout the southern part of the State with a few reports of light damage to the new cherry and grape crops. The harvest of early variety cherries and peaches started in the central part of the State mid-month. Pollination of dates also began mid-month. Older and younger walnut trees started to bloom. Almonds were irrigated and fertilized through drip. Nuts continued to size. Almond nut drop began and micronutrients were applied. Pistachios also received fungicide applications.
The citrus bloom was still underway at the beginning of April, as growers awaited the declaration of petal-fall. Valencia oranges, Murcott, Mandarins, sweet limes, Star Ruby grapefruit, and Meyer lemons continued to be harvested, packed and shipped to domestic and foreign markets throughout the month. Topping and skirting of established citrus groves were ongoing; planting of new groves started. Netting was removed in seedless Mandarin groves as the bloom ended. Olive trees continued to be pruned, with reports of some blooms in the central part of the State early in April; groves continued to be pruned and irrigated.