Shah, A. R., M. S. Mirjat, A. Q. Mughal, M. Talpur, and N. Leghari. “GROWTH, YIELD AND ROOT DEVELOPMENT OF MAIZE AS INFLUENCED BY TILLAGE AND TRACTOR TRAFFIC”. Advances in Agriculture and Animal Sciences, vol. 32, no. 1, June 2016, pp. 53-65, https://pjaaevs.sau.edu.pk/index.php/ojs/article/view/152.