Web sites for corn stand assessment tools:
Purdue Publication- 'Estimating Yield and Dollar Returns from Corn Replanting' Publication multi-midwest state developed and close to Iowa State University
University of Illinois Agronomy Online Handbook
Iowa State University Publication. 'Corn Planting Guide' Corn is grown on more acres of Iowa land than any other crop. Corn yields have trended upward over the past 40 years. Considerable year-to-year variation indicates that the weather has a major influence on corn production. Many factors are responsible for these yield increases, including better hybrids, more efficient use of fertilizers, better pest management (weeds, insects and disease) and better management overall. Producer-controlled management factors (row spacing, planting dates, planting depth, plant densities, and replant options) that affect yield will be addressed in this guide.
CLARK MC GRATH, ISU CROPS FIELD SPECIALIST
4/30/2006