Oklahoma State University
Stillwater, OK

Oklahoma Alfalfa
Oklahoma Cooperative Extension Service
Oklahoma Agricultural Experiment Station

SNAKES IN ALFALFA?

Snakes are not a problem or even a common observance in alfalfa. However, producers occasionally do get "snake bit" when addressing the many needs required for good stand establishment and longevity.   

One of the most beneficial pre-plant practices is to correct soil acidity by liming. If acid soil is not neutralized before planting, yields will likely be depressed by 30 to 50% and the stand will only last a few years. Most producers realize the value of a sound liming program and understand that when soil pH is less than 6.2, a ton or more of ECCE lime must be applied and incorporated in order to maximize profits.   

ECCE is the measure of active ingredient in the liming material and it is responsible for correcting the soil acidity. It does not matter how the lime product is formulated, whether conventional dry-ground lime, pelleted, or mixed with water to produce "liquid lime", at least 1.0 ton of ECCE must be applied to be effective. Some producers have been "bit" by the idea that new lime formulations will be effective at 300 to 400 pounds per acre, and then find out later that this rate will be recommended each year. After several years the total of 1.0 ton or more will have been applied, and if a good stand still exists some response may be noted. In the process, however, much production and profit was lost.   

For best results: soil test early, preferably the year before alfalfa is to be planted; apply lime immediately after harvesting the last crop preceding alfalfa; apply the soil test recommended amount of ECCE lime and incorporate. 
 

Gordon V. Johnson, Nutrient Management Specialist  
Department of Plant and Soil Sciences 
Oklahoma State University

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