University of Missouri Extension
University of Missouri
When Should the Last Irrigation of Corn Occur?

Joe Henggeler, State Irrigation Specialist
MU Commerical Ag
line
Pull ear from corn.
Step 1. Pull ear from corn.
Break in half; take tip end.
Step 2. Break in half; take tip end.
Find milk-line.
Step 3. Find milk-line by eye-balling it or prodding with small jeweler's screwdriver.
Use table below for last irrigation of corn.
Step 4. After determining location of milk-line, use table below to see when last irrigation should occur.

When last irrigation should be applied to corn
 
Without Hardpan
With Hardpan Above 10 inches
Soil Type
Sprinkler
Flood
Sprinkler
Flood
Coarse sand
1/2 milk-line
1/2 milk-line
3/4 milk-line
1/2 milk-line
Fine sand,
Loamy sand, Clay, Clay loam
1/2 milk-line
1/4 milk-line
1/2 milk-line
1/2 milk-line
Sandy loam,
Fine sandy loam, Very fine sandy loam
1/2 milk-line
1/4 milk-line
1/2 milk-line
1/2 milk-line
Silty clay,
Silty clay loam, silt loam
1/4 milk-line
beginning dent
1/2 milk-line
1/4 milk-line
[Irrigation Home] [ AgEBB ]

Questions or comments about this website? Please contact Joe Henggeler via e-mail: HenggelerJ@missouri.edu or phone (573-379-5431); University of Missouri Delta Center/Portageville, MO 63873