Soil and Crop Issues

Boron reactions in soils

Boron reactions in soils

Organic matter is the storehouse for most of the available boron in soils. Boron deficiencies in crops are found mainly in low organic matter soils and in acid, sandy soils in humid regions.

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Does manure contain enough boron?

Does manure contain enough boron?

Animal manures contain varying concentrations of most plant nutrients.

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Effects of sodium in borax on soils and crops

Effects of sodium in borax on soils and crops

Sodium is found in all soils and crops. Soils in humid regions, where most boron deficiencies occur, contain about 50-150 lbs/acre of sodium in the surface 6-inch layer, but soils in drier regions may contain higher levels of sodium.

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Fertilize before boron deficiency symptoms occur for optimum yields

Fertilize before boron deficiency symptoms occur for optimum yields

Visual symptoms of boron deficiency may not occur until the deficiency has become moderate or severe. At this stage, slower growth may have reduced the yield potential for the crop. Use the results of soil tests and/or plant analyses to help assess the potential for boron deficiencies to ensure adequate boron supplies for the crop.

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Plant tissue testing for boron

Plant tissue testing for boron

Plant analysis can be a valuable tool in determining the general nutritional status of crops during the growing season. Accurate interpretation of plant analyses data requires that plant tissue samples be carefully collected and handled prior to shipment to the laboratory. Knowledge of the normal boron sufficiency range in a given crop helps to interpret the analytical results and to diagnose a possible boron deficiency.

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Soil tests for available boron

Soil tests for available boron

Soil testing is helpful in assessing the potential boron-supplying capacity of the soil. Recent research has shown that three commonly used soil tests, the Mehlich-1 and -3 tests and the DTPA test modified to include sorbitol, also may be used to determine available boron in soils.

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U.S. Borax, part of Rio Tinto, is a global leader in the supply and science of borates—naturally-occurring minerals containing boron and other elements. We are 1,000 people serving 500 customers with more than 1,700 delivery locations globally. We supply 30% of the world’s need for refined borates from our world-class mine in Boron, California, about 100 miles east of Los Angeles.  Learn more about Rio Tinto

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