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Boron Fertilization of Corn in Minnesota 1
Author(s) -
Peterson J. R.,
MacGregor J. M.
Publication year - 1966
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1966.00021962005800020003x
Subject(s) - boron , human fertilization , agronomy , soil water , fertilizer , chemistry , trace element , zoology , biology , ecology , organic chemistry
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.