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Allowable Storage Time for Cereal Grains, Malting Barleyand Soybeans

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The sections below include tables showing the approximate allowable storage time for cereal grains, malting barley and soybeans.

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Allowable Storage Time for Cereal Grains

“Approximate” Allowable Storage Time for Cereal Grains based on Moisture Content and Grain Temperature
Moisture Content	30ºF	40ºF	50ºF	60ºF	70ºF	80ºF
14%	*	*	*	*	200 days	140 days
15%	*	*	*	240 days	125 days	70 days
16%	*	*	230 days	120 days	70 days	40 days
17%	*	280 days	130 days	75 days	45 days	20 days
18%	*	200 days	90 days	50 days	30 days	15 days
19%	*	140 days	70 days	35 days	20 days	10 days
20%	*	90 days	50 days	25 days	14 days	7 days
22%	190 days	60 days	30 days	15 days	8 days	3 days
24%	130 days	40 days	15 days	10 days	6 days	2 days
26%	90 days	35 days	12 days	8 days	5 days	2 days
28%	70 days	30 days	10 days	7 days	4 days	2 days
30%	60 days	25 days	5 days	5 days	3 days	1 day

Allowable Storage Time for Malting Barley

Estimated Allowable Storage Time for Malting Barley based on Moisture Content and Grain Temperature
	11%	12%	13%	14%	15%	16%	17%	18%	19%
80ºF	230 days	175 days	115 days	70 days	40 days	20 days	11 days	9 days	6 days
70ºF	560 days	420 days	270 days	175 days	100 days	50 days	30 days	20 days	15 days
60ºF	*	*	660 days	430 days	260 days	130 days	65 days	45 days	25 days
50ºF	*	*	*	*	630 days	350 days	140 days	100 days	60 days

(Criterion: Germinability)
* Allowable storage time exceeds 700 days.
Source: Drying Cereal Grains by Brooker, Bakker-Arkema and Hall

Allowable Storage Time for Soybeans

“Approximate” Allowable Storage Time for Soybeans based on Moisture Content and Grain Temperature
Moisture Content	30ºF	40ºF	50ºF	60ºF	70ºF	80ºF
11%	*	*	*	*	200 days	140 days
12%	*	*	*	240 days	125 days	70 days
13%	*	*	230 days	120 days	70 days	40 days
14%	*	280 days	130 days	75 days	45 days	20 days
15%	*	200 days	90 days	50 days	30 days	15 days
16%	*	140 days	70 days	35 days	20 days	10 days
17%	*	90 days	50 days	25 days	14 days	7 days
19%	190 days	60 days	30 days	15 days	8 days	3 days
21%	130 days	40 days	15 days	10 days	6 days	2 days
23%	90 days	35 days	12 days	8 days	5 days	2 days
25%	70 days	30 days	10 days	7 days	4 days	2 days
27%	60 days	25 days	5 days	5 days	3 days	1 day

* Allowable storage time exceeds 300 days
Allowable storage time is the storage period before quality loss is expected to affect grain quality.
Airflow through the grain permits maintaining the grain temperature, but does not extend the allowable storage time beyond that listed in the table.
Allowable storage time is cumulative. If 16% moisture soybeans were stored for 35 days at 50°F, one-half of the storage life has been used. If the soybeans are cooled to 40 degrees, the allowable storage time at 40 degrees is only 70 days.

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Allowable Storage Time for Cereal Grains, Malting Barleyand Soybeans

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