Mix the olive oil, lemon juice, zest, garlic, salt and pepper in a large mixing bowl.
In a pot of boiling water, steam the asparagus for 8 minutes, or until tender. Chop once cool.
In another pot, bring the vegetable broth to a boil and add the orzo and turmeric. Cook for 10 minutes, then drain well.
Toss the orzo, asparagus and dressing together.