Department of Agronomy University of Agriculture Faisalabad 38040 Pakistan;
Department of Plant Science University of California California 95616-8780 USA;
Department of Agronomy University of Agriculture Faisalabad 38040 Pakistan;
Department of Agronomy University of Agriculture Faisalabad 38040 Pakistan;
Institute of Soil and Environmental Sciences University of Agriculture Faisalabad 38040 Pakistan;