Soybean Compressibility and Bulk Density

Milani, Adhemar Pitelli; Bucklin, R. A.; Teixeira, A. A.; Kebeli, H. V.

doi:10.13031/2013.3082

Cited by 8 publications

(2 citation statements)

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“…Several studies have investigated the compressibility of a variety of food crops, such as ground shelled corn, wheat, corn, soybean, corn meal, sugar beet pulp, cotton seed meal, and distillers grains without solubles (Loewer et al, 1977;Malm and Backer, 1985;Bhadra et al, 2015;Boac et al, 2015). Milani et al (2000) determined that the effects of pressure and moisture on bulk densities of soybean were independent of variety). Additional studies have been conducted related to the effect of grain spreaders on the bulk density (BD) of stored wheat, yellow corn, and sorghum (Chang et al, 1981) and different methods of transfer, such as choke fed and non-choke fed through an orifice (Chang et al, 1983).…”

Section: Abstract In Grain Bins the Compaction Of Stored Grain Is Cmentioning

confidence: 99%

“…Milani et al (2000) determined that the effects of pressure and moisture on bulk densities of soybean were independent of variety). Additional studies have been conducted related to the effect of grain spreaders on the bulk density (BD) of stored wheat, yellow corn, and sorghum (Chang et al, 1981) and different methods of transfer, such as choke fed and non-choke fed through an orifice (Chang et al, 1983).…”

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confidence: 99%

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Correlating Bulk Density (with Dockage) and Test Weight (without Dockage) for Wheat Samples

Bhadra

Casada²,

Boac

et al. 2016

Appl. Eng. Agric.

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ABSTRACT. In grain bins, the compaction of stored grain is caused by the overbearing pressure of the bulk material in the bin. To predict the amount of grain in the bin, compaction values must be determined based on the average bulk density (BD) of the stored material. However, BD is determined following the Federal Grain Inspection Service (FGIS) guidelines for measuring test weight (TW),gricultural grains such as wheat, corn, and soybeans are compressible materials and, in storage, they are affected by pressure from overbearing loads. However, the degree of compressibility of stored grain varies with grain type, grain properties, and the geometry of the bin in which the grain is stored. Several studies have investigated the compressibility of a variety of food crops, such as ground shelled corn, wheat, corn, soybean, corn meal, sugar beet pulp, cotton seed meal, and distillers grains without solubles (Loewer et al., 1977;Malm and Backer, 1985;Bhadra et al., 2015;Boac et al., 2015). Milani et al. (2000) determined that the effects of pressure and moisture on bulk densities of soybean were independent of variety). Additional studies have been conducted related to the effect of grain spreaders on the bulk density (BD) of stored wheat, yellow corn, and sorghum (Chang et al., 1981) and different methods of transfer, such as choke fed and non-choke fed through an orifice (Chang et al., 1983).Janssen's (1895) equation is commonly used to predict the vertical and lateral pressures in bins and is based on the BD of the stored material, coefficient of friction, lateral to vertical pressure coefficient and the bin geometry. Studies have also been conducted in which the degree of compressibility or packing of grain in bins has been estimated using the differential form of Janssen's equation (Thompson and Ross, 1983;Thompson et al., 1987;McNeill et al., 2008). Grain packing models based on this form of Janssen's equation were adopted as an ASAE standard in 1992 and later revised in 2010 (ASABE Standards as EP413.2, 2010, R2014).Inventory control of stored grain is extremely important for farmers, elevator managers, and bin designers and is crucial for the grain bin managers, who must track the quantity of the crop and meet federal and state regulatory obligations. Each truck load of grain stored in a bin is sampled and quality parameters measured following standards in the USDA Federal Grain Inspection Service -GIPSA, 2009). Official inspection of grain by a state or federal regulatory body can only be conducted using FGIS-approved equipment and procedures. For wheat, the moisture content, dockage, TW, and percent of shrunken and broken kernels are the most important extrinsic parameters measured as per FGIS guidelines.When grain is delivered to elevators, samples of wheat, including Hard Red Winter (HRW) and Soft Red Winter (SRW) classes, are taken from incoming trucks or trailers using mechanical probes. These samples are evaluated for moisture content before the removal of dockage, and evaluated for TW after the dockag...

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