Kathie Zipp

While pome fruit growers may use conventional products such as antibiotics to treat trees in the orchard, new resistant strains have generated interest in alternative methods.

Varieties from Oregon State University resist fungus and allow for more acreage to meet growing demands

It’s a long road to developing disease-resistant rootstocks, but USDA-ARS research at the University of California, Davis is providing a great start for walnuts.

Crossbreeding almond rootstocks with those of other stone fruit can make trees more resilient in boron-rich soils.

A study by the University of California found that applying nitrogen to a well-managed, productive orchard after harvest did not improve almond yield the next year.