Almonds: Most growers are out of the woods for leaffooted bug (LFB) as treatment has been applied and shells begin to harden – however, continue to monitor fields to ensure no new damage is occurring. Mummy sprays should be about wrapped up with most growers trying to finish by no later than mid-May. With the dry and warm winter we had there has been a considerable build in mite populations. Continue to monitor closely as populations can grow quickly with increasing temperatures in the forecast. As we approach June, you might contact your GAR Bennett PCA and consider pulling tissue samples to plan for late season fertilizer applications. Even late season potassium applications can help add yield to the current year’s crop if applied early enough. Foliar potassium applications help potassium be taken up quickly to meet the tree’s nutrient needs. We will want to ensure potassium levels are sufficient before entering the period of bud differentiation.
Cherries: Harvest has started on all varieties and is moving along. As growers begin to shift into post-harvest mode, some will start gearing up to prune and clean up weeds. Focus will also shift to post-harvest nutrition as we want to try to build up buds and protect them. As we get into the higher temperatures, we may consider applying a protectant on younger trees to prevent sunburn on scaffolds. Contact your GAR Bennett PCA for expert advice.
Citrus: Some growers are wrapping up sprays for thrips, except for slower growing varieties. PCAs are scouting for potential re-treatments for thrips due to reinfestation and katydids. The first flight of red scale is currently happening, and pressures have been high. Contact your GAR Bennett PCA. Now is a good time to supplement your nutritional program for appropriate treatment options if red scale is an issue in your citrus groves.
Grapes: Grape bloom is wrapping up; growers are almost done with shatter sprays and will turn focus to berry sizing in table and raisin grapes. Your GAR Bennett PCA is scouting intensely for mealybug and monitoring omnivorous leafroller (OLR) flights to time insecticide applications for the most efficiency. Stay in close contact with your GB PCA to properly time applications for mildew control. This week’s mid-80’s is ideal weather for powdery mildew to develop. Fertilizer applications will wrap up post-bloom.
Pistachios: Growers are currently scouting for Botryosphaeria (BOT) and Botrytis. Be sure to keep an eye out for these diseases and Gill’s mealybug. Consult your GAR Bennett PCA to make sure disease doesn’t spread and pest populations don’t get out of hand. Typically, BOT sprays are applied the end of May into early June depending on rain; your GB PCA can help you target the best time for your crop. Growers are applying nitrogen and potassium fertilizers to ensure trees will have plenty of nutrients during nutfill.
Stone Fruit: Harvest for early varieties is moving along. The weather has been ideal for growth. Many blocks are being treated with a pre-harvest fungicide along with an insecticide for worms and silvering thrips on nectarines. As we get later into the season on nectarines, keep an eye out for katydids as these pests will begin to migrate. Contact your GAR Bennett PCA for expert advice.
Walnuts: The 1B codling moth flight took place around May 10 in most areas. Some growers that had trap activity applied worm treatments and included a fungicide for Botryosphaeria (BOT). Other growers elected to just make fungicide treatments. In some cases, tank mixes included products for nematode and scale suppression. Chandlers are experiencing erratic leaf out this year and it doesn’t look great in some spots. Talk with your GAR Bennett PCA for expert advice on how to handle this situation. Currently, the crop looks promising in most cases—Serrs, Tulares, and Ivanhoes seem to have average to above average yield.
Alfalfa Seed: Clean up begins in the next seven days prior to bees being placed along field edges. Clean up consists of spraying for pests (lygus, aphid, armyworm) and a preventative treatment for mites. Contact your GAR Bennett PCA for expert advice.
Cotton: Side dressings of UN 32 are finishing up. Growers with Roundup Ready cotton will be doing an over the top spray to control weeds. Check with your GAR Bennett PCA for rates and timing.
Dehydrated Onions: Growers are currently on their second fungicide application to prevent downy mildew and purple blotch. GAR Bennett PCA’s are also scouting for thrips; contact them should you have any issues.
Garlic: This crop is starting to wind down as we approach harvest. As garlic grows, it loses layers of skin. When it comes time for water cutoff, we want to ensure the garlic has a minimum of five skins. If not, the garlic may shatter, leaving cloves on the ground before harvest. Irrigation is finished on early garlic while late garlic is still finishing up. Contact your GAR Bennett PCA for expert advice.
Tomatoes: Second applications are being done to control for beet leafhoppers that carry curly top virus. Some growers are applying treatment through drip tape. If your are near an almond orchard, keep an eye out for thrips that transmit spotted wilt.