The Pierce’s Disease & Glassy-Winged Sharpshooter (PD/GWSS) Referendum, conducted this spring, passed with 78 percent approval of California winegrape growers. All winegrape producer entities that paid the assessment on grapes crushed in 2019 received ballots and 49 percent cast ballots. Assessment funds are used for research, outreach, and related activities on PD, GWSS, and other designated pests and diseases of …

Frost injury this spring has created a situation where grapes have a few primary shoots, some secondary shoots, and many non-count basal and latent shoots. This puts shoots at various stages of development and creates problems for growers. Regardless, some varieties are are at or nearing bloom on surviving primary shoots, which is a key time to control important diseases …

Today, June 5, 2020 Japanese beetles were reported in Central Northeast Missouri, specifically Boone County. The Japanese beetles were reported on the University of Missouri Integrated Pest Management website. The trapping network has eleven sites around Missouri trapping for Japanese beetles. The Japanese beetles were caught in a pheromone trap. On the IPM website you can sign up to receive …

Powdery mildew is just starting to show up on untreated plants in the research vineyard at Blairsville, GA. The photograph below was taken today, but infections likely started occurring some time ago. I hope you will not see it yet in well managed vineyards, but recent rains and other difficulties may have hampered spray programs. When rain is occurring frequently, …

The spotted lanternfly (SLF) is an invasive insect from Asia that was first found in Pennsylvania in 2014. The spotted lanternfly can decimate entire grape vineyards and damage fruit orchards, hops, walnuts, hardwoods, and landscape trees. While the SLF has not yet reached California, officials at CDFA are already engaged and the Pierce’s Disease and Glassy-Winged Sharpshooter Board has designated …

The COVID-19 pandemic has caused a refocus on building and maintaining a healthy immune system. Information on the way in which fresh grapes contribute to both is now available in one place for easy reference. The health info-sheet combines results of health research on the benefit grapes provide to brain, heart, and colon health with data from two professors at Tufts Friedman School of …

While most Californians are staying home to slow the spread of the novel coronavirus, California farmers, farmworkers and other agricultural professionals are out in the fields and packing houses working to produce food. With increased demand for personal protective equipment, or PPE, to protect against COVID-19, these essential workers are facing shortages. Agricultural commissioners in 28 counties are hearing from …

California employers are required to establish and implement an Injury and Illness Prevention Program (IIPP) to protect employees from all worksite hazards, including infectious diseases. This guidance contains information, recommendations, and requirements for agricultural employers on how to update their IIPPs to include preventing the spread of COVID-19 in the workplace. This guidance does not introduce any new legal obligations, but because COVID-19 …

Fungicides are essential for maintaining healthy crops and reliable, high-quality yields. They form a key component of integrated crop management, and their effectiveness must be sustained as long as possible. Fungicide resistance is a major threat to disease control in all crops, including grapes. How Does Resistance Develop? The development of fungicide resistance is influenced by many factors including the …