Zinc Levels In Your Soil (From Ag PhD Show #1126 - Air Date 11-3-19)
3:37
Calcium in Soil (From Ag PhD Show #1122 - Air Date 10-6-19)
6:46
Zinc For Your Crops (From Ag PhD Show #1180 - Air Date 11-15-20)
6:41
Phosphorus Management #1073 (Air Date 10-28-18)
29:58
Ag PhD Show #811 (Air Date 10/20/13)
6:44
The Importance of Boron (From Ag PhD Show #1179 - Air Date 11-8-20)
8:13
Potassium #769 (Air Date 1/6/13)
19:13
How Cheap is Cheap Enough?
20:57