Monthly Archives: September 2017

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

Feather Fingergrass: an Emerging Problem in Orchards

Feather fingergrass, a summer annual weed native to warm temperate regions worldwide is becoming more and more common in the Sacramento Valley. It can be found in agricultural fields, orchards, roadsides and canals. This tuft forming grass, can be 1.5 to 2.5 feet tall and forms umbel like inflorescence: a cluster of short stalks originating from a common point, somewhat like umbrella ribs. Continue reading