Careful monitoring when drying and storing soybeans is important to maximizing farm income.

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On-farm serial storage and drying facilities. Photo by Mike Staton, Extension.

Due to the cool and wet conditions, soybeans harvest at this timeof the year will should be dried on the farm yard or at the elevator. Part elevators will certainly accept soybeans approximately 18% humidity while rather will reject loads the are over 15% moisture. Contact your elevator prior to deliveryand understand their discount schedule. Info on understanding soybean discount schedules is obtainable in "Understanding soybean discount schedules" fromMichigan State university Extension.

Commodity soybeans provided for domestic crush or export have the right to be dried using supplemental heat. However, food grade and seed beans have to not be dried through supplemental heat. Suitable management is essential to minimizing damages when utilizing supplemental heat. Store the drying temperature listed below 130 levels Fahrenheit in consistent flow dryers and below 110F in batch dryers. Maintaining the family member humidity that the cook air above 40% will also reduce seeds coat damage and splits. This is daunting to do since the family member humidity is reduced in fifty percent for each 20 levels that the air is heated.

High temperature dry as discussed above will damage the seed coats and also increase the amount of split beans. Many elevators will start discounting for split beans once they exceed 20% and also some elevators may reject loads having an ext than 20% splits. This level of damage may it is in exceeded once using supplemental warmth (Table 1). However, natural air and also low temperature drying are not an excellent options right now of the year. The lot of damage will vary between soybean varieties and also grain dry equipment. Check for cracked seeds coats and also split beans often and readjust the drying temperature to accomplish the level the cracking and also splitting that is agree to you and your grain buyer.

Table 1. Dry temperature effects on soybean quality

Drying temperature (F)

Seed coats cracked (%)

Split beans (%)










Source: Ken Hellevang, north Dakota State University expansion Service

Checked or cracked seed coats space not discounted through elevators. However, when the particle coat is damaged, the seeds is much much more prone to splitting when taken on or transported.Because of this, the dried soybeans need to be handled and also transported carefully. Running augers full and also slow and reducing the elevation that the beans autumn are two ways to reduce damage and also splits. Producers deserve to use a basic and fast procedure, the hypochlorite test, to recognize seed coat damage that is not quickly detected by the nude eye. Just soak 100 beans in a 20 percent bleach equipment for about five minutes. Beans v damaged particle coats will swell and be larger than undamaged beans. Wrinkled particle coats space OK.

Your target humidity content relies on your storage and marketing plans. If you plan to supply the beans soon after drying or keep them till spring, shoot because that 13 percent moisture. If you plan to save the bean on-farm with the summer, dried the bean to 12 percent moisture.

Your best strategy for holding the beans v the winter is come cool the serial mass come 32 to 35 F making use of the aeration fans. If daytime temperatures are above 35 F, operation the fans at night when temperatures fall listed below 32 F. Ice or frost may take place on bin vents at temperatures close to or below freezing, so leaving the fill hole or accessibility door open up to alleviate the potential because that damaging the bin roof as soon as operating fans.

Check the temperature that the bean in several locations in each bin every 2 to three weeks during the winter and more frequently as exterior temperatures increase in the spring. Pay certain attention come the south side of the bins in so late winter or beforehand spring together the grain temperature along the bin wall will increase an ext rapidly because of increasing solar energy. Keep grain cool during the spring and summer. Serial temperatures above 50 F increase the potential because that insect and mold development.

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Careful monitoring when drying and also storing soybeans is crucial to maximizing farm income.

This article was developed by a partnership between Extension and also the Michigan Soybean Checkoff.

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