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This article in AJ

  1. Vol. 58 No. 2, p. 141-142
     
    Received: Oct 30, 1964


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doi:10.2134/agronj1966.00021962005800020003x

Boron Fertilization of Corn in Minnesota1

  1. J. R. Peterson and
  2. J. M. MacGregor2

Abstract

Abstract

Six fields (5 soil types) of corn were treated with soluble boron at different rates and methods of application during 1961 and 1962. A fritted trace element treatment (FTE-502) was included in 1961, but a lighter application of FTE-504 in 1962. No boron deficiency symptoms were observed at any growth stage, either on the corn foliage or on the ears. Leaf B concentrations on untreated soil were generally related to soluble soil B. Boron applied either in the corn row or as foliar spray resulted in the highest leaf B concentrations and broadcast B resulted in a lower level. Upper corn leaves sampled in mid-August were highest in B. Optimum leaf sampling at this time is suggested. These five Minnesota soils, having a water-soluble B content of 0.33 to 1.58 ppm, apparently do not require B applications for maximum corn production at this time.

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