Northern Sacramento Valley ET Report – September 29, 2017
Irrigation Evapotranspiration (ET) Report for Tehama, Butte and Colusa county CIMIS stations. Continue reading
Yearly Archives: 2017
Tehama County Weekly Pest Update – September 25, 2017
This is the weekly IPM pest update from Tehama county, with biofixes and trap activity for: codling moth, oriental fruit moth, peach twig borer, navel orangeworm, San Jose scale, and walnut scale. Continue reading
Northern Sacramento Valley ET Report – September 22, 2017
Irrigation Evapotranspiration (ET) Report for Tehama, Butte and Colusa county CIMIS stations. Continue reading
Southern Sacramento Valley ET Report – September 22, 2017
Irrigation Evapotranspiration (ET) Report for the Woodland, Davis, Dixon and Verona CIMIS stations. Continue reading
End of 2017 Season Flooded Orchard Damage Update
This article briefly reviews our observations since early June in orchards either directly flooded in the river bottoms or those indirectly flooded with standing water for months via under-levee seepage. Continue reading
Tehama County Weekly Pest Update – September 18, 2017
This is the weekly IPM pest update from Tehama county, with biofixes and trap activity for: codling moth, oriental fruit moth, peach twig borer, navel orangeworm, San Jose scale, and walnut scale. Continue reading
Considerations for Replanting Walnut Orchards
As orchards age, yields decline for a number of reasons and eventually the decision is made to remove the orchard. The age at which an orchard is pulled is a unique decision for each block, depending on yield, price, demand, and resources. Here are a number of recommended steps in removing an orchard, especially when preparing to replant that orchard into walnuts again. Continue reading
Harvest Damage Evaluation for Walnuts
Harvest of the earliest walnut varieties has begun in some locations. Plan accordingly to obtain the ever-important harvest samples! Harvest samples can reveal a number of common sources of kernel, shell, and hull damage. These include damage caused by insect pests, diseases, and environmental/physiological factors. Here are information, tables, and photos that can help identify the sources of damage in your walnut harvest samples. Continue reading
Southern Sacramento Valley ET Report – September 15, 2017
Irrigation Evapotranspiration (ET) Report for the Woodland, Davis, Dixon and Verona CIMIS stations. Continue reading
Northern Sacramento Valley ET Report – September 15, 2017
Irrigation Evapotranspiration (ET) Report for Tehama, Butte and Colusa county CIMIS stations. Continue reading
Waterlogged Orchards & Phytophthora
A wet winter is when having an orchard planted on a deep, well-drained soil, or planting on berms, islands, or mounds can pay off. Some orchards on soils that are not well-drained or have been flooded can face difficulties when … Continue reading
Prune Orchard Nutrition – Springtime Considerations
Along with setting a decent prune crop begins the important work of supporting current crop growth and canopy health and return bloom for future production. Adequate orchard nutrition is critical to both these goals. Special care in soil and nutrient … Continue reading
Navel Orangeworm Considerations Before Harvest – 2017
Navel orangeworm is the key pest in almond. Nut feeding by this pest directly reduces yield and grower income. For example, 1% damage* in a 2500 kernel lb/acre crop = 25 kernel lb/acre loss (and $62.5/acre at a price of … Continue reading
Bacterial Blast – Relationship between Varieties and Symptoms during 2017 Bloom
Bacterial blast doesn’t occur every year, so when there are a large number of orchards affected, it is natural to want to look for patterns in the occurrence and severity. One of the orchards affected in 2017 was the Regional … Continue reading
Bad Bloom Weather Options
Extreme weather at bloom can have damaging short and long term effect on prune growers in California and the entire California industry. Excessive heat (2004, 2005, 2007 and 2014) or prolonged cool, wet weather (2016) can dramatically reduce prune production. … Continue reading