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Boron Studies: I. The Susceptibility of Various Plants to Boron Toxicity as Influenced by Soil Type¹

ABSTRACT

A study of the effects of various applications of borax upon the yield of snap beans grown on nine soil types is reported. The results obtained indicate that the tolerance of a soil to applications of borax is correlated with the exchange capacity of the soil, and with the amount of available boron present in the soil.

Twenty-eight plants are classified into four groups according to their tolerance to borax applied to a Norfolk fine sandy loam.

A study of the residual effect of applications of borax to field plats indicates that borax is readily removed from the soil by leaching.

¹ Contribution from the Virginia Truck Experiment Station, Norfolk, Va.

² Soil Technologist and Research Fellow in Soils, respectively.

The authors wish to acknowledge their appreciation to the Boron Agricultural Association for the financial Assistance which made this study possible, and to Dr. H. H. Zimmerley for many helpful suggestions.