No-tillage and fertilizer-nitrogen improved sorghum yield in dryland wheat–sorghum–fallow rotation

Mosaed A. Majrashi is a former graduate student in the Department of Agronomy, Kansas State University, Manhattan, Kansas and the Department of Soil Science, College of Food and Agricultural Sciences, King Saud University, Riyadh, Saudi Arabia. Augustine K. Obour (corresponding author) is an associate professor of soil science in the Department of Agronomy, Kansas State University, Agricultural Research Center-Hays, Hays, Kansas. Colby J. Moorberg is an associate professor of root ecology and hydropedology in the Department of Agronomy, Kansas State University, Manhattan, Kansas. Romulo P. Lollato is an associate professor of wheat and forage production in the Department of Agronomy, Kansas State University, Manhattan, Kansas. Johnathon D. Holman is a professor of agronomy and cropping systems in the Department of Agronomy, Kansas State University, Garden City, Kansas. Juan Du is an associate professor in the Department of Statistics, Kansas State University, Manhattan, Kansas. Maysoon M. Mikha is a research soil scientist in the USDA Agricultural Research Service Central Great Plains Resources Management Research, Akron, Colorado. Yared Assefa is a research associate in the Department of Agronomy, Kansas State University, Manhattan, Kansas.