Forage and Grain Crops 
Agronomy 105's Weed ID
Barley
Barley has a spike type inflorescence and matures earlier than most of the other cereals that can be grown in Indiana. 
Because of this it is receiving some attention as a possible crop to be included in double cropping systems.  The winter types can be seeded in the fall, harvested in spring or early summer and then soybeans can be planted.  About 60% of our barley is used in livestock feeds and the other 40% is used in the malting industry.  Extremely uniform kernels are required by the malting industry to insure that all the kernel will sprout at the same time thus resulting in a very high quality malt.  Most of the malting barleys are grown in the northern part of the U.S.  The spring type of barley is by far the most important and most commonly grown.  The kernels grow in rows on the spike.  There are six-row types and two-row types of spikes. 
The auricles of barley are very prominent and quite a bit larger than those of wheat and this will aid in differentiating seedling barley from seedling wheat. 
The grain of barley threshes with the hulls attached and this outer covering makes barley seed fairly easy to identify.