Indiana Department of Agriculture officials say the so-called "green manure" helps soil recover faster if there is little rain.
74 of the state's 92 counties had been given some form of disaster status as of Monday.
With 71 percent of Indiana’s corn crop rated in poor to very poor condition, farmers are looking for whatever help they can get.
USDA officials spent Wednesday in northern parts of the state and will head to Johnson County Thursday.
This could be the driest season since the dust bowl conditions of the 1930’s
Blazing heat and weeks without rain are parching the region
Nearly 90% of the state is experiencing a drought and officials say the dry weather is expected to continue.
This is the first in a series taking a look at how family farms across Indiana have adapted to modern farming.
It is costing Hoosier farmers more to get crops in the ground.
Indiana crops yields have been low because of heavy rains followed by a hot summer.