Yield and Protein Content of Wheat in Central Mexico as Affected by Available Soil Moisture and Nitrogen Fertilization¹

Abstract

Synopsis Owing to soil moisture differences, grain yields were increased by 85% and straw yields by 187% in heavily fertilized wheat. Maintenance of the available soil moisture percentage above 30 was necessary for maximum grain yields. The protein content of the whole grain was decreased by small applications of nitrogen and was increased by large applications. Protein content was lowest in the wettest treatment and highest in the driest treatment.