We published a blog post last year stressing the need to control winter weeds and felt it necessary to issue this information again this winter as we cannot let down our guard regarding reducing host plants for impatiens necrotic spot virus (INSV).
The Zoom link will be the same each week. No preregistration required. Meeting link: https://ucanr.zoom.us/j/97511217168?pwd=ZWVhVXorcFEzRHUwQ0Q0L1lqaHNWdz09 *The presentation (not the Q and A discussion) will be recorded and made available.
Pythium wilt of lettuce (Pythium uncinulatum) continued to be a significant production problem in lettuce fields in 2021. The levels of infection were not as extensive or severe as in 2020, but the damage caused by this disease was nonetheless problematic and serious in many fields.
Richard Smith, Farm Advisor Daniel Geisseler, Professor of Nutrient Management at UC Davis has developed a tool for estimating the mineralization of nitrate-N from organic amendments.
