Riverland farmer Dave Otto de Grancy wanted “something that would stand the test of the weather”, so he turned to pecan trees 16 years ago. Now, the nuts yield $80 a kilogram. Riverland farmer Dave Otto de Grancy wanted “something that would stand the test of the weather”, so he turned to pecan trees 16 years ago. Now, the nuts yield $80 a kilogram. Nut Growing, Food and Beverage Processing Industry Latest business news