Some Causes of the Injurious after‐Effects of Sorghums and Suggested Remedies 1

The sorghums are a class of crops which, so far as their production is concerned, fit admirably into the agriculture of many sections of the United States. The advantages, of high yidds, drought resistance, vitality, and profitableness have recommended them to the farmer’s consideration. Under many conditions, however, their culture has proved injurious to certain crops following and especially to the small grains. This injury has been so great under certain conditions as to overbalance in the minds of the farmers the many advantages of these crops. Though the yields of the sorghum crop itself may be high, the crop sequence of sorghtuu followed by a small grain may be m’ach less profitable than an entirely different crop sequence which would not include any of the sorghums. Field tests have beer, reported from time to time showing the extent of injury to crops following sorghums. Comparisons have been made in most cases ̄ between yields of small grains following sorghums and yields of those crops following corn, though other crops have been used as test and comparison crops.