The following content was provided by meteorologist Gail Martell of MartellCropProjections.com:
September Drought Continues, Corn and Soybean Declining
Midwest drought has worsened in September reducing yields in corn and soybeans. Hardly any rain materialized in the Midwest last week perpetuating late- summer drought. Widely scattered mostly light rainfall was less than predicted in Midwest corn and soybeans.
The September drought has expanded into the eastern Midwest, damaging crops in Indiana and Ohio, states that previously boasted good conditions. The 30-day rainfall analysis up to September 8 indicates one-quarter of the grain belt with 20% of normal rainfall or less.
A small area of the western grain belt received near normal rainfall in the month, stabilizing crops in northeast Nebraska, western Iowa and southeastern South Dakota.
Yield Damage in Soybeans and Corn
A dry finish to the growing season is especially damaging for soybeans filling pods. This is the main period for determining yields. Smaller seeds and few seeds per pod would be the outcome. Pod setting was 92% underway September 1. Once pods are set it takes 30-40 days for seed filling to be completed.
Just 40% of corn was "denting" September 1, the stage when kernels begin drying down. Thus, 60% of corn was "filling grain". Smaller, light weight kernels are anticipated due to late-summer drought reducing the corn yield.