Research Summary:
How dryland wheat responds to biosolids fertilization at eleven field sites

D.M. Sullivan, A.I. Bary, C.G. Cogger, E.A. Myhre, T.E. Shearin and T.N. Cramer
Oregon State and Washington State Universities

Introduction

Biosolids are stabilized solids from municipal wastewater treatment that meet federal criteria for land application. Nitrogen is usually the key nutrient provided by biosolids. The economic value of biosolids in dryland cropping systems is of interest to wheat growers and city biosolids managers in the Pacific Northwest.

Objectives

• Evaluate biosolids effects on grain yield, grain quality and post-harvest soil nitrate-N over a range of site and management conditions in wheat-fallow cropping systems (25 to 35 cm annual precipitation)
• Estimate economic returns with biosolids fertilization compared to traditional N fertilization practices

Table of Contents